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Piper Navajo PA-31, Service Manual

The Piper Navajo PA-31 Service Manual is essential for maintaining and repairing this popular twin-engine aircraft. Find the free manual for download at manualshive.com to ensure that you have all the necessary information to keep your Piper Navajo in top condition for safe and efficient flying operations.

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Summary of Contents for Navajo PA-31

Page 1: ...PIPER AIRPLANE SERVICE MANUAL CARD 1OF5 PA 31 PA 31 300 PA 31 325 PIPER AIRCRAFT CORPORATION PART NUMBER 753704 lAl...

Page 2: ...or completepageadditionsarenot identified by revisionlines Revisions to service manual 753 704 issuedOctober 1 1966 are as follows Revisions Publication Date AeroficheCardEffectivity ORG661001 CR72070...

Page 3: ...VI VII VIII VIIIA VIIIB HYDRAULIC SYSTEM LANDING GEAR AND BRAKE SYSTEM POWER PLANT PA 31 Turbo POWER PLANT PA 31 300 POWER PLANT PA 31 325 2A9 2E4 2H6 2K8 2K18 AEROFICHE CARD NO 3 IX X FUEL SYSTEM IN...

Page 4: ...INTENTIONALLY LEFT BLANK...

Page 5: ...nd Cowl Flap IC14 2 13e Lubrication Chart Doors and Seats IC15 2 14 Fabricated Jack Stand for Piper Jack Part No 18338 00 1C19 2 15 Fabricated Tail Stand 1C20 2 16 Removal of Cherrylock Rivets IDI 2 1...

Page 6: ...2 4 31 Surface Scratches Abrasions or Ground In Dirt 1H7 4 32 Deep Scratches Shallow Nicks and Small Holes 1H 4 33 Mixing of Epoxy Patching Compound 1H8 4 34 Welding Repair Method 1H8 4 35 Repairing o...

Page 7: ...agram of Hydraulic System Ozone 2930 5 and 7 or Wiebel 2135 1 and 3 Schematic of Power Pack Electrical S stem Power Pack Installation Ozone 2930 1 Power Pack Installation Ozone 2930 3 Power Pack Insta...

Page 8: ...justing Main Gear Down Light Switch 2F18 7 12 Gear Warning Switches Installation 2F20 7 13 Nose Wheel Assembly 7 14 Main Wheel Asse m bly 2F24 7 15 Brake Installation 2G 7 16 Wheel Brake Assembly 30 6...

Page 9: ...bled Over for Installation of Eyelet Ignition System Schematic PA 31 Turbo Removing Frozen Spark Plug Propeller Governor Engine Installation Fuel Air Bleed Nozzle Engine Installation Height of Spring...

Page 10: ...B16 9 9a Fuel System Installation PA 31 300 3B18 9 10 Adjustment of Crossfeed alve 3B20 9 11 Fuel Filter 3B22 9 12 Electric Fuel Pump PA 31 310 and 325 3C2 9 12a Electric Fuel Pump PA 31 300 3C6 9 13...

Page 11: ...Assembly 11 28 Testing Alternator 11 29 Brush Installation 11 30 Internal Wiring Diagram 11 31 Alternator Paralleling System 11 32 Regulator Diagram Prestolite 11 33 Regulator Diagram Lamar 11 34 Test...

Page 12: ...er Showing Whirling Flame Typical Fuel Regulator and Shutoff Valve Top View Duct Switch 39D59 Heater System No I Top View Duct Switch 39D59 Heater System No 2 and B39D59 D39D39 Heater System Wiring Sc...

Page 13: ...agram Showing Cycle Sequence Two Blades Electrical Diagram Showing Cycle Sequence Two Blades Electrical Diagram Showing Cycle Sequence Two Blades Electrical Diagram Showing Cycle Sequence Two Blades E...

Page 14: ...rophaser Installation 5H21 14 39 Strobe Sensor 513 14 40 Pulse Generator 514 14 41 Computer Assembly 515 14 42 Fabricated Test Box 517 14 43 Electrical Schematic 517 14 44 Strobe Sensor Internal Wirin...

Page 15: ...wer Pack Wiebel Tool Inspection and Repair Hydraulic Pump Troubleshooting Chart Hydraulic System Troubleshooting Chart Landing Gear System Propeller Specifications PA 31 310 and 325 Turbocharger Insta...

Page 16: ...stem Temperature Pressure Chart Aluminum Tubing Torque Compressor Oil Charge Belt Tensions TIO 540 A2C Engine Air Velocity Chart Troubleshooting Chart Air Conditioning Troubleshooting Chart Engine Syn...

Page 17: ...age 1 7 Flight Controls 1 8 Hydraulic S stem 1 9 Landing Gear 1 10 Engines and Propellers 1 11 Fuel System 1 11 Fuel System 1 12 Instruments 1 13 Electronic Equipment 1 14 Heating and Ventilating Syst...

Page 18: ...ormation Section II gives leading particulars and principal dimensions while each major system is described in its appropriate section of the manual 1 3 DESCRIPTION The Piper PA 31 Navajo is a six to...

Page 19: ...r mounted on each engine Referto Section II Table 11 1 for all engine and propeller leading particulars 1 11 FUEL SYSTEM The fuel system consists of four rubber type cells located in the wings with a...

Page 20: ...ng 1 2 13 Mooring 1 2 14 Parking 1 2 15 Towing B17 2 16 Taxiing IBIS 2 17 External Power Receptacle 1 2 18 Operation of External Power Receptacle 1 2 19 Servicing 1 2 20 General 1 2 21 Fuel System B20...

Page 21: ...leaning Headliner Side Panels and Seats 1C3 2 48 Cleaning Wood Surfaces IC4 2 49 Cleaning Carpets C4 2 50 Cleaning Toilet and Relief Tube IC4 2 50a Airplane Finish Care IC4 2 51 Oil System Engine IC 2...

Page 22: ...elevator is the centerline of the airplane and station 0 WL of the vertical stabilizer and rudder is 16 inches above the cabin floor with the airplane level The reference datum line is located at the...

Page 23: ...1000 PIPER NAVAJO SERVICE MANUAL WING LOCKERSON APPLICABLEMODELS 40 8...

Page 24: ...int Clearance Main Left Right Retard and Tach Retard Avco Lycoming IO 540 MIA5 TIO 540 A A A1B A2A A2B A2C TIO 540 F2BD LTIO 540 F2BD 1E4 E14EA 300 2700 310 2575 325 2575 See Lubrication Chart 12 qts...

Page 25: ...nimum Blade Angle Low Pitch Blade Angle High Pitch Governor Control Governor Model Hartzell Constant Speed Feathering HC E2YK 2B HC E2YK 2BT HC E2YR 2B HC E2YR 2BT C8475 4 C8475A 4 80 in 78 in 14 5 0...

Page 26: ...E ON TIO 540 A2A A2B A2C ENGINES ONLY 12 ELIGIBLE ON TIO 540 A2A A2B ENGINES ONLY 13 ELIGIBLE ON T10 540 A2C ENGINES ONLY 14 ELIGIBLE ON ALL TIO 540 SERIES ENGINES WITHOUTTHE SUFFIXLETTER A IN THE ENG...

Page 27: ...ity each Unusable Fuel each Optional Nacelle Fuel Cells LANDING GEAR Two 56 U S Gallons 1 2 U S Gallons 2 3 U S Gallons Two 40 U S Gallons 15 U S Gallons 2 0 U S Gallons 27 U S Gallons Hydraulically r...

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Page 29: ......

Page 30: ......

Page 31: ...YS AND TURNBUCKLES 18 TRIM CONTROL CABLES AND PULLEYS HYDRAULIC HAND PUMP 19 NOSE GEAR STEERING BELLCRANK 20 OXYGEN CYLINDER HEAD 21 EXTERNAL POWER RECEPTACLE ATTACHMENTS 22 PITCH TRIM SENSOR 23 BAGGA...

Page 32: ...1004A I 3...

Page 33: ......

Page 34: ...VE 23 FUELCELLDRAIN 24 PROPELLER 25 FLAPPOSITION SENDER 26 WINGFLAPTRANSMISSION 27 AILERONTRIMCABLERUBBLOCKS 28 WINGINTERIOR AILERON CABLES 29 COWLFLAPTRANSMISSION PRESSURE SYSTEM RELIEFVALVE PRESSURE...

Page 35: ...g torque to the specified torque to get the final torque NOTE Nut bolt size PIPER NAVAJO SERVICE MANUAL TABLE II II RECOMMENDED NUT TORQUES Inch Pounds If the bolt is stationary and the nut is torqued...

Page 36: ...20D AN 364D NAS 1022D Torque Limits Torque Limits Torque Limits Torque Limits in lbs in lbs in lbs in lbs Torque Limits Torque Limits in lbs in lbs Min Max 8 36 10 32 1 4 28 5 16 24 3 8 24 7 16 20 1 2...

Page 37: ...wed explicitly When it is necessary to use a special extension or adapter wrench together with a torque wrench a simple mathematical equation must be worked out to arrive at the correct torque reading...

Page 38: ...nd 43 35 both along the fuselage centerline Refer to Figure 2 6 Tojack the airplane proceed as follows a Place the wing jacks under the wing jack pads b Position the tail support stand under the tail...

Page 39: ...jacks during the weighing procedure while the wheels are on scales or while the wheels are on the round To level the airplane for purposes for weighing or rigging the following procedures may be used...

Page 40: ...ed of nonsynthetic material leave sufficient slack to avoid damage to the airplane when the ropes contract due to moisture CAUTION Use square or bowline knots Do not use slip knits NOTE Additional pre...

Page 41: ...tely 100 pounds pull to start its roll and approximately 60 pounds to maintain roll CAUTION When towing do not turn the nose gear in either direction beyond its 20 degree arc from center as this will...

Page 42: ...d look for holes and ruts f Do not operate the engine at high RPMwhen running up or taxiing over ground containing loose stones gravel or any loose material that may cause damage to the propeller blad...

Page 43: ...RE MAIN LAND R 19 FILTER PRESSURE PUMP INLET 20 FILTER HYDRAULIC LEFT Figure 2 11 Revised 1 29 82 PIPER NAVAJO SERVICE MANUAL 21 OIL FILLER LEFT ENGINE 22 FILTER INDUCTION LEFT ENGINE 23 RESERVOIR POW...

Page 44: ...he opposite side b To flush the cross feed line open the cross feed valve and push up on the arms of the drain valve for a few seconds The drain valve is located on the left panel aft of the filter bo...

Page 45: ...ain gear oleo struts must have approximately 3 25 inches of piston tube exposed under normal static loads Refer to Figure 2 12 If a strut has less than the required inches exposed determine whether it...

Page 46: ...air bubbles and a prolonged filling operation e Extend the oleo strut by pulling down on the wheel Fluid will be sucked into the oleo strut Compress and extend the oleo strut until it is full of flui...

Page 47: ...the filler assembly is located on the upper right side of the nose section This filler assemblyservicesboth the hydraulic and brake systems The amount of fluid in the filler assembly is determined by...

Page 48: ...of the tire inline with the chalk marks When the cement has dried install the patches making certain they are on the center line of the tire and aligned with the chalk marks on the sidewall Burnish th...

Page 49: ...ws a Clean all of tire surfaces of any oil or grease b First apply a single heavy coat using a brush at a rate of 0 4 to 0 5 fluid ounces per sq foot Cover surface completely and evenly Repeat applica...

Page 50: ...CAUTION Do not operate engine until excess solvent has evaporated or otherwise been removed d Remove the protective covers from the filter and magnetos e Lubricate controls bearing surfaces etc per L...

Page 51: ...nd use a straight rubbing motion Do not harshly rub surface c Rinse thoroughly and dry Do not apply wax to heated windshield d Remove oil and grease with a cloth moistened with kerosene NOTE Do not us...

Page 52: ...ANE FINISH CARE The complete airplane is carefully finished inside and outside to assure maximum service life Both sides of all parts are alodine treated and sprayed with zinc chromate primer The exte...

Page 53: ...the drain up and turn counterclockwise This will hold the drain in the open position It is recommended the engine be warmed to operating temperature to insure complete draining of the old oil 2 55 LU...

Page 54: ...lar inspection periods If oil appears on fingers do not add oil If the felt is dry moisten with light oil CAUTION Be careful not to add too much oil because the excess will be thrown off during operat...

Page 55: ...pecial instructions are listed at the beginning of the lubrication charts and referenced on the particular chart TABLE II IIa THREAD LUBRICANTS TYPE OF LINE TYPE OF LUBRICANT Brakes MIL H 5606 Deicer...

Page 56: ...TON GRADE AS SPECIFIED SAE 50 ABOVE 60 F AIR TEMP SAE 40 30 TO 90 F AIR TEMP SAE 30 0 TO 70 F AIR TEMP SAE 20BELOW 10 F AIR TEMP HYDRAULIC FLUID PETROLEUM BASE GREASE AIRCRAFT AND INSTRUMENT GEAR AND...

Page 57: ...REMOVED FITTING 6 LUBRICATION POINTS WIPE ALL LUBRICATION POINTS CLEAN OF OLD GREASE OIL DIRT ETC BEFORE RELUBRICATING 7 LUBRICATING OIL INTERVALS BETWEEN OIL CHANGES CAN BE INCREASED AS MUCH AS 100 O...

Page 58: ...OWER PACK RESERVOIR SEE SPECIAL INSTRUCTION 4 AND CAUTION 1 10 GEAR UPLOCK ROD ASSEMBLY AND DOWN LOCK ROD ASSEMBLY SEE SPECIAL INSTRUCTION 8 SEE NOTES 2 AND 3 II PISTON STRUT SEE NOTE 1 LUBRICANT MIL...

Page 59: ...GEAR STEERINGCAM AND CAM FOLLOWER 14 UPLOCK BUSHING A405 13 1 WIPE EXPOSED STRUT WITH CLEAN CLOTH AND HYDRAULIC FLUIDMIL H 5606 2 CLEAN AND LUBRICATE WHENEVER LANDING GEAR AND WHEEL AREA HAS BEEN WAS...

Page 60: ...AP TRACK RIGHT AND LEFT 10 FLAP TRACK ROLLERS RIGHT AND LEFT 11 AILERON BELLCRANK CABLE ENDS PIVOT BEARING AND CONTROL ROD ENDS RIGHT AND LEFT 12 TRIMSCREWS 13 AILERON AND RUDDER TRIM CONTROL BEARINGS...

Page 61: ...CYLINDER ENDS 5 ELEVATOR BELLCRANK PIVOT BOLTS AND CABLE ENDS 6 RUDDER HORN CABLE ENDS 7 ELEVATOR TRIM SCREW 8 ELEVATOR TRIM TAB CONTROL ROD ENDS 9 ELEVATOR CONTROL ROD LUBRICANT FREQUENCY MIL L 7870...

Page 62: ...NOTE 3 FUEL PANEL AND CONTROL LEVERS SEE CAUTION 2 COWL FLAP TRANSMISSION AND SCREW RIGHT AND LEFT SEE SPECIAL INSTRUCTION 3 COWL FLAP BELLCRANK BEARINGS RIGHT AND LEFT COWL FLAP CONTROL ROD ENDS RIG...

Page 63: ...E AND FORWARD BAGGAGE DOOR HINGES AND LATCHES 3 SEAT TRACKS ALL SEE NOTE 1 4 CARGO DOOR OPTIONAL LUBRICANT FREQUENCY MIL L 7 870 MIL L 7870 MIL L 7870 100 HRS 100 HRS 100 HRS MIL L 7870 100 HRS 107F 2...

Page 64: ...ure lines can cause an explosion When coming in contact with oxygen equipment keep hands tools and clothing clean hospital clean c Never attempt to repair or repaint oxygen equipment d Keep fire and h...

Page 65: ...e opening any valves check the pressure remaining in the airplane s oxygen cylinder If it is still partly charged note the pressure indicated on the cylinder gauge Then open and close each valve on th...

Page 66: ...it Disconnect the filler hose from the filler valve replace the protective cap on the filler valve and close the access cover Check the cylinder pressure according to Table II III after the cylinder t...

Page 67: ...TL CHANNEL 2 REQ PIPERNAVAJO SERVICEMANUAL 110 ALL WELDED CONSTRUCTION 2 0 X 6 0 X 200 X24 00 STL CHANNEL 1 REQ Figure 2 14 Fabricated Jack Stand for Piper Jack Part No 18338 00 Reissued 10 12 79 HAND...

Page 68: ...PLATE 375 2 50 50 BRAZE ROUND END 076 HOLE 37 D SASH CHAIN 8 00 L PIN 23 37 I 2 25 TYP 1 25 O D X 57 50 4 REQ WHEELS OPTIONAL 24 00 TYP ALL WELDED CONSTRUCTION PLATE 062 1 REQ ANGLE 2 00 X 2 00X 187...

Page 69: ...55101 Trichlorethylene Perm A Clor MIL T 7003 Dextrex Chemical Industries Inc P O Box 501 Detroit Michigan 48232 Turco 4217 Turco Products Inc 24600 South Main Street Wilmington California 90746 Methy...

Page 70: ...k 10020 RR 28 Socony Mobil Oil Co Inc Washington 5 D C Castrolease Al Castrol Oils Inc Newark New Jersey Mobile Grease 28 Mobil Oil Corp Shoreham Building Washington D C 20005 Oil Air Conditioner Lubr...

Page 71: ...ord New Jersey 12188 Rain Repellent Repcon FSCM 50159 UNELKO Corporation 727 E 110th Street Chicago Illinois 60628 Thread Compound Anti Seize and Sealing Thread Sealant High Pressure Oxygen System Cle...

Page 72: ...lon 003 in x 25 in wide 2 NOTE Tools with Part Numbers given are available through the Piper Service Department Specifications for fabricated tools may be found by referring to the appropriate illustr...

Page 73: ...ommended that a small center drill be used to provide a guide for a large drill on top of the rivet stem and the tapered portion of the stem be drilled away to destroy the lock See Views 2 and 3 c Pry...

Page 74: ...ANDSTRIPE RED VIEWS SHOWING OPPOSITE SIDES OF HOSE B NONSELF SEALING AROMATIC AND HEAT RESISTANT HOSE RED NUMERALS LETTERS AND STRIPE E SELF SEALING AROMATIC RESISTANT HOSE HOSE IDENTIFICATION MARKIN...

Page 75: ...0 9652 0 9398 5 5562 54102 5 3086 5 2197 5 1816 23 64 T S 11 32 R 0 3593 0 358 0 346 0 3437 0 339 9 1262 9 1281 8 7884 8 7300 8 6106 13 64 7 8 9 10 0 2031 0 201 0 199 0196 0 1935 5 1594 5 1054 5 0546...

Page 76: ...587 4 078 08 1 984 32 094 09 2 381 64 109 11 2 778 125 12 3 175 9 141 14 3 572 64 156 16 3 969 11 172 17 4 366 3 64 16 188 19 4 762 7 64 203 20 5 159 7 64 32 219 22 5 556 64 234 23 5 593 250 25 6 350...

Page 77: ...for Converting Inches to Millimeters Refer to Table II VIII A Example Convert 1 5 inches to millimeters 1 Read down inches column to 1 inches 2 Read across top inch column to 0 5 3 Read down and acro...

Page 78: ...2 336 2 362 2 387 0 005 0 006 0 007 0 008 0 009 0 127 0 381 0 635 0 889 1 143 1 397 1 651 1 905 2 159 2 413 0 152 0 406 0 560 0 914 1 168 1 422 1 676 1 930 2 184 2 438 0 177 0 431 0 685 0 939 1 193 1...

Page 79: ...0 110 120 130 140 150 160 170 180 190 200 210 F 94 0 76 0 58 0 40 0 22 0 4 0 14 0 32 0 50 0 68 0 86 0 104 0 122 0 140 0 158 0 176 0 194 0 212 0 230 0 248 0 266 0 284 0 302 0 320 0 338 0 356 0 374 0 39...

Page 80: ...KW HR DRAM CU CM CU IN U S GAL LITERS CU IN CU FT U S GAL LIQ LITERS CU IN CU FT LITERS IMPERIALGAL FLUIDOZ CM FT FT FT LB MULTIPLY KILOGRAMS LITERS METERS METER KILOGRAM OUNCES AVDP OUNCES FLUID LB...

Page 81: ...p Transmission Dukes System Inspection of Wing Flap Transmission Calco Inspection of Wing Flap Transmission Actuator Cable Dukes System 500 Hour Inspection of Wing Flap Transmission Actuator Cable Duk...

Page 82: ...00 hours Each inspection or operation is required at each of the inspection intervals as indicated by a circle O If an item is not entirely accessible or must be removed refer to the applicable sectio...

Page 83: ...this dimension exceed 32 5 16 of an inch replace the transmission assembly or purchase Gear Transmission Kit 755 051 Refer to Section V Paragraphs 5 62 and 5 63 for transmission removal and installat...

Page 84: ...system has been rigged and the flex shaft nut has been tigthened and safetied the flex shaft is to be disconnected at the flap motor Examine the splined coupling for wear and security Inspect swedged...

Page 85: ...t the aft side of the wheel well at wing stations 34 5 44 5 and 54 0and on the underside of the wing at the trailing edge at wing stations 65 0 82 75 and 92 5 d Remove all Ty Raps and support clamps a...

Page 86: ...Figure 3 2a Sketch 2 Inspect the swaged porition of the drive blade fitting end as described in steps 1 and 2 above 4 Inspect the drive blade dimension as shown in Figure 3 2a View B h Inspect the int...

Page 87: ...ICE MANUAL C708 BLADE END FITTING 280 INNERCABLE HOUSING MIN 244 CHECK HERE FORSIGNSOF MIN BLADE FITTINGLOOSENESS FLAT CABLE VIEW B HTFLATCABLE VIEW B FLAT CABLE SEE VIEWB SKETCH 2 LEFT WING SHOWN RIG...

Page 88: ...ANSMISSION FLEXIBLE SHAFT MAKE FROM 032 SAFETY WIRE REFERENCE MARK SECUREONE END OF MCTOR WITH A TONGUE DEPRESSOROR SIMILAR METHOD NOTE USE CAUTION NOT TO DAMAGE MOTOR SHAFT IF DISTANCE BETWEEN REFERE...

Page 89: ...rboards and access panels S 764A 3 10 REDUCTIONOF FRICTION IN WINGFLAP SYSTEM DukesSystem Referto Figure3 3 To insure proper flap system operation and reduce friction on the flap motor the following i...

Page 90: ...only finger tight and install cotter pin If not previously accomplished at the regular 100 hour inspection the flap transmission should be in accordance with Paragraph 3 8 Acertain that the flap trans...

Page 91: ...probe within one half of an inch of the painted rotating spline shaft and observe the RPM reading on the meter RPM in excess of 11 000 will indicate a demagnetized motor which should be replaced e In...

Page 92: ...control wheel and another mechanic with flashlight and mirror observing the movement of the aileron chain over the sprocket observe for smooth flow of the chain links over the sprocket throughout the...

Page 93: ...RIGHTFUELSELECTORVALVECABLE CROSSFEED MAINSPAR SWIVEL FITTING SWIVEL FITTING LEFT FUEL SELECTOR VALVE CABLE NOTE REFERTO PIPERSERVICE BULLETIN 648A LATESTREVISION LEFT FUEL SELECTOR VALVE Figure 3 5 F...

Page 94: ...OL CHAIN AND SPROCKET 5 CHAIN TO COPILOT CONTROL WHEEL REF 6 SPROCKET HOUSING 7 PILOT CONTROL WHEEL TUBE 2 5 7 032 SHIM 2024 T3 ALUM P N 41179 00 Add new 012 shim asreq to attain proper vertical align...

Page 95: ...s 164 and 165 and AD 93 16 14 8 Rotate blades and check for tightness in hub pilot tube 9 Inspect propeller air pressure Check at least once a month 10 Check condition of propeller deicer system Refe...

Page 96: ...ectionII 17 Cleanengine NOTE If fouling of spark plugs has been apparent rotate bottom andtopplugs 18 Inspect condition of spark plugs Clean and adjust gap per latest revision of Textron Lycoming Serv...

Page 97: ...r Service BulletinNo 550 O O 45 Inspect exhaust stacks for cracks Inspect exhaust stack gaskets replace gaskets asrequired O 0 46 Inspectbreathertubefor obstructionsandsecurity O O 47 Inspectcrankcase...

Page 98: ...s SeeNotes21 22and23 10 Inspect the turbocharger mount for cracks condition and security to the engine andturbocharger SeeNote24 11 Inspectfuel injectionnozzlereferencemanifoldfor deterioratedhose loo...

Page 99: ...ation of switches to indicators registering fuel tank quantity 27 Inspect oxygen outlets for defects and corrosion 28 Inspect oxygen system operation and components See Note47 29 Inspect condition of...

Page 100: ...stallation SeeNote26 30 Inspectelevator balancespring tension Referto ServiceManual SectionV and latestrevisionof PiperServiceBulletinNo 626 31 Inspectprimaryaileron rudder elevatorcontrolcablesandtri...

Page 101: ...e and operation per Section III Refer to latest revisionof Piper Service Bulletin647 and see Note 31 12 Inspect wing flap transmission per the Service Manual Section III SeeNote 31 13 Inspect flap act...

Page 102: ...Checktirepressure Nose 42psi Main 60psi 9 Inspectbrakelining anddiscfor wear 10 Inspectbrakebackingplatesfor cracks 11 Inspectsecurityof brakeandhydrauliclines SeeNotes30 38and42 12 Inspectshimmydampe...

Page 103: ...area RUN UP AND OPERATIONAL CHECKS 1 Set parking brake Start engines 2 Check fuel selector valve and crossfeed system operation see latest Piper Service Inspectiontime hrs 50 100 500 1000 0 0 0 0 0 0...

Page 104: ...00 O 000 O 000 O J SPECIAL INSPECTIONS AS REQUIRED UPON CONDITION 1 HARD OR OVERWEIGHTLANDINGORLANDINGGEAREXTENSIONABOVEVLO Refer to PiperServiceBulletin845 Performthisinspectionafteraknownroughlandin...

Page 105: ...han 1000 hours time in service or 8 years whichever comesfirst Refer to latest Lycoming ServiceBulletin 240 11 After every 400 hours of engine operation remove the rocker box covers and check for free...

Page 106: ...to comply with FAA Airworthiness Directive 78 05 06 35 Replace fuel tank vent line flexible connections as required or every five years whichever comes first 36 Only use brass screws to install the ac...

Page 107: ...18 Removal of Aileron Trim Tab 4 19 Installation of Aileron Trim Tab 4 20 Flap 4 21 Removal of Flap 4 22 Installation of Flap 4 23 Wing 4 24 Removal of Wing 4 25 Installation of Wing 4 26 Empennage G...

Page 108: ...dows Only IF14 4 53 Installation of Side Windo s IF 4 53a Pilot Door Storm Window IF16 4 53b Removal ot Pilot Door Storm Window IF16 4 53c Installation of Pilot Door Storm Windo 1F16 4 53d Replacement...

Page 109: ...ation of Balance Weight Anchor Nut Elevators P N 40140 00 and 40140 01 4 94 Installation of Balance Weight Anchor Nut Elevators P N 43757 00 and 43757 01 4 95 Installation of Rudder Balance Weight Anc...

Page 110: ...trance door has been opened This door permits rapid loading and storage of cargo and also facilitates loading items normally too bulky to pass through the cabin entrance door The nacelle storage locke...

Page 111: ...fitting and remove the screw securing the ground wire to the wing structure c Remove the wing tip 4 6 REPAIR OF WING TIP The wing tip may be repaired in accordance with fiberglass repair procedures in...

Page 112: ...that securethe assemblyto the strut housing 4 13 INSTALLATION OF LANDING LIGHT a To install the landing light lamps attach the electrical leads to the lamp s and place against the mounting pad Positi...

Page 113: ...Figure 4 2 a Insert the tab control rod through the aileron and insert the outboard hinge pin into its bushing b Position the inboard hinge brackets install hinge bolt and torque to 38 in lbs include...

Page 114: ...16 NUT MS20365 428 12 REQ 0 WASHER 40559 43 BUSHING 86 10 8 REG OUTBD ASSY 8 REQ OUTBD ASSY 4 REQ OUTBD ONLY WASHER 40559 42 BUSHING 86102 105 16 REQ INB CTRASSY 4 REQ CTRONLY Section A A BUSHING 8610...

Page 115: ...ORTO TORQUING 122 119 PIPER NAVAJO SERVICE MANUAL SKETCHC BOLT AN4 15 WASHER AN960 416 NUT AN310 4 COTTER PIN MS24665 134 2 REQ 118 TORQUEBOLTTO 38 INCH POUNDS THIS INCLUDES18 INCH POUNDS AVERAGE FRIC...

Page 116: ...ugh the fuselage or wing CAUTION To prevent damage or contamination of fuel hydraulic and miscellaneous lines place a protective cover over the line fittings and ends h If the left wing is being remov...

Page 117: ...re connectors n Draw engine control cables back through the firewall engine nacelle and wing o Arrange a suitable fuselage cradle and supports for both wings p Remove the brace assembly that the fuel...

Page 118: ...struments vacuum fuel and hydraulic lines Secure the lines and cables in position with support blocks and clamps o Connect electrical wire connectors p Through the wing fairing access openings at the...

Page 119: ...ng installed the following items pertain to the installation of the left wing only 1 Draw the left balance cable into the wing and connect at the aileron bellcrank Install the cable guard pin at the c...

Page 120: ...1025 PIPER NAVAJO SERVICE MANUAL BOLTAN3 5A NUT MS20365 1032C 12 REQ SKETCH B 1027 0 Figure 4 5 Wing Installation Revised 1 29 82 STRUCTURES 1E24...

Page 121: ...WASHER AN960 516 NUT MS20365 624C 1 REQ L 1 REQ R BOLTAN5 12A WASHER AN960 516 NUT MS20365 524C TORQUE TO 100 140 IN LBS 1 REQ L 1 REQ R BOLTAN5 26A BUSHING 41413 36 MS20365 524C TORQUE TO 100 140 IN...

Page 122: ...to insure that the friction is within limits Refer to Paragraph 4 91 4 28 REMOVAL OF ELEVATOR Refer to Figure 4 6 a Remove the screws that attach the fuselage tail cone pull the cone back far enough t...

Page 123: ...29 PIPER NAVAJO SERVICE MANUAL BOLT AN4 13 WASHER AN960 416 2 REQ U NUT AN310 4 COTTER PIN MS24665 132 128 BOLT AN3 SA NOER WASHER AN960 10L Figure 4 6 Empennage Installation Revised 3 11 81 STRUCTURE...

Page 124: ...UAL SKETCHC SKETCHE 134 BOLT AN3 10 NUT AN310 3 COTTER PIN MS24665 132 BUSHING 41413 51 BOLT AN3 6A WASHER 81342 9 TORQUE 38 IN LBS INCLUDES 18 IN LBS FRICTION TORQUE BOLT AN3 A WASHER AN960 10 WASHER...

Page 125: ...60416 2 REQ NUT AN310 4 COTTER PIN MS24665 134 2 REQ BOLT ANS 7A WASHER AN960416 NUT MS20365 524C 6 REQ SCREW NAS221 11 WASHER AN960 10L UNDER NUT MS20365 1032C NUT 2 REQ TORQUE 20 25 IN LBS SKETCH K...

Page 126: ...to Figure 4 3 e Disconnect the trim cables f Through the top access hole remove the two elevator trim cable pulleys spacer and bolt Draw the cables through the fuselage to this point g Disconnect the...

Page 127: ...Remove the access panel located on top of the fuselage aft of the vertical fin c With the control cable tension relieved disconnect the control cable from the rudder horn d Disconnect the rudder trim...

Page 128: ...tween stabilizer and fuselage skin is 187 of an inch Trim to obtain this gap b Ascertain that the sealer extrusion is attached to the lower side of the vertical stabilizer c Install the rear spar moun...

Page 129: ...ot tighten screws at this time Apply RTV Silicone sealer under screw heads before tightening f Torque the screws that secure the retainer molding around the inside of the windshield g Torque the retai...

Page 130: ...to compress snug against strip j Apply Sealer PR 1221 B2 or PR1425 to any areas around windshield that may allow water to penetrate past the windshield k Install switch panel and trim molding around...

Page 131: ...PE 163 SECTIONC C SECTIONA A 141 143 1031 PRESSTITE TAPE 163 PRESSTITE PRC383 TAPE OR PR1425 163 SEALER SECTION D D 140 A RTV SILICONE SEALER UNDER SCREW HEADS PRESSTITE TAPE PRC383 OR PR1425 SEALER D...

Page 132: ...LER PR1221 B2 OR PR1425 VINYL SPONGE TAPE SECTION A A SEM KIT SEALER 145 VINYLSPONGE TAPE SECTION B B 146 SEM KIT SEALER PR1221 B2 OR PR1425 VINYL SPONGE TAPE SECTION C C Figure 4 8 Windshield Install...

Page 133: ...ding with the switch in the PARK position Disconnect the electrical connector b Assemble the wiper motor and converter by screwing the two units together NOTE Ascertain that the coupling 11 is install...

Page 134: ...stud d Adjust the wiper arm tension to obtain five pounds tension at the blade pivot point by adjustment of the nut 4 on the wiper arm adjustment stud NOTE Ascertain that the base of the adjustment s...

Page 135: ...ION ADJUSTMENT NUT 15 POUNDS 5 LOCK WIRE 6 ADJUSTMENT SLEEVE 7 CONVERTER 8 MOTOR 9 MOTOR SHAFT 10 NIPPLE 11 COUPLING 12 CONVERTER SHAFT 13 BRACKET 14 BRACKET 3 PIPER NAVAJO SERVICE MANUAL 1 5 148 7 8...

Page 136: ...e window where it contacts the fuselage skin and seal with any of the following Rubber Caulk 5000 White Sealant Chem Caulk 100 White Sealant or Weatherban 101 WhiteSealant c Put outside window and ret...

Page 137: ...E Figure 4 10 Side Window Installation Typical NOTE 1980 models do not have screws holding panels in place but have a 2 piece extrusion c Adjust the turnbuckles of the cables to allow all four latches...

Page 138: ...pins b Secure hinge pins withlocking roll pins c Secure the step extender cable bracket to the lower door frame with a screw d Replace rubber cover and scuff plate between cabin floor and door e Recon...

Page 139: ...0 SHIM WASHERS 11 ACTUATOR 12 LATCH MECHANISM 13 LATCH SPRING 14 PIN 15 ACTUATOR SPRING 16 ACTUATOR ASSEMBLY 17 SPRING 18 ADJUSTING SCREW 19 HOOK 20 ROLL PIN 21 SHIM WASHERS 22 BOLTS 23 HANDLE INNER 2...

Page 140: ...s of latchassembliesand lubricate lightly The door latchmechanism covers can now beinstalled with fivescrewsfor each side f Install inner handle with screws and shim washers 21 Use only enough shims t...

Page 141: ...oll pin located between the tube assembly and the handle if not previously done 2 Remove six lock nuts and machine screws holding the handle and bracket and remove from door assembly 3 The handle can...

Page 142: ...sition turn the clevisin or out to get the arms of the arm assemblies to extend out at a 90 degree angle to the edge of the door assembly c When the adjustment is completed tighten the locknuts and re...

Page 143: ...OSERVICEMANUAL 1034 1 NACELLE LOCKER 2 CATCH ASSEMBLY 3 BUCKLE ASSEMBLY 4 BAGGAGE STRAP 5 DOOR SUPPORT 6 LOCKER DOOR 7 DOOR LATCH 8 LOCK ASSEMBLY 6 Figure 4 12 Nacelle Wing Lockers Revised 9 23 80 STR...

Page 144: ...n the door frame and secure with bolt bushing and washer c Insert the latch pins on rod assembly 8 and link 5 through their respective guides in the side and bottom door frame d Place the free end of...

Page 145: ...3 MAIN CABIN DOOR LATCH PLATE 4 CARGO DOOR LATCH 5 LINK 6 LATCH PIN GUIDE 7 LATCH PIN 8 ROD ASSEMBLY 9 SPACER 80122 3 AS REQ TO INSURE PROPER LATCHING 10 SPRING RETAINER PLATE 11 SPRING 12 DOOR AJAR...

Page 146: ...ath must be free of any sealant and foreign matter e Install two pieces of clear plastic tubing 1 8 in OD 5 in long covered with a film of seal glyde or Dow Corning lubricant Neoprene 0 125 thick Pipe...

Page 147: ...D END 5 STOPASSY 6 LATCH ROD END 7 LATCH 8 THEFT LOCK 9 MAIN LATCH 10 TO OUTSIDE HANDLE 11 MAIN LATCH ROD 12 BELLCRANKASSY 13 INNERHANDLE ROD END 14 INNERHANDLE 15 OUTSIDESKIN 16 CABLE FROM SKETCHA 17...

Page 148: ...the latch 7 2 Loosen the locknut on the latch rod end and rotate the rod end to adjust the outside handle to its proper position 3 Connect the rod end to the latch and tighten the locknut c With the h...

Page 149: ...ter Test Weight Arm Perpendicular distance between the control surface hinge line and the point of application of the test weight f 0 1 Pound 0 04 oz Test Weight Small weightadded to the master testwe...

Page 150: ...Nut 8 MAX 2 per Anchor Nut 6 max 4 70 40 0 10 5 20 5 1 00 0 0 3 1 00 1 15 108 0 96 0 10 10 43332 9 6 30 49 0 5 53892 2 6 70 49 0 5 Rudder 40046 39 8 75 5 03 9 108 0 10 FOOTNOTES I When wing nacelle l...

Page 151: ...ove material from the surface balance weight until a balanced condition is obtained with master test weight in place d If the surface is trailing edge heavy add trim weights as specified in Table IV I...

Page 152: ...APE TRIM TAB LEVEL WITH ELEVATOR ELEVATOR BALANCE JIG KNIFE EDGESAT CENTER AND TWO OUTBOARD HINGE LOCATIONS 10 LB 0 04 OZ LB BALANCE LINE MASTER TEST WEIGHT ATTACHMENT POINT ON ELEVATOR RIB MASTER TES...

Page 153: ...the elevator balances If the number of 0 1 pound test weights does not exceed the maximum allowed per Table IV I the elevator is within the static balance limits If the number of 0 1 pound test weigh...

Page 154: ...ecialbalanceweights part number4243 00 oneon eachside andtrimweights43332 00 maximumof one per bolt as required to obtain the correct balance a Remove the elevator balance leading edge by removing att...

Page 155: ...4 18 Elevator Trim Weight Installation Without Wing Lockers 31 310ELEVATORASSEMBLIES 43757 00 43757 01 43757 173 43757 182 31 325ELEVATOR ASSEMBLIES 54232 22 54232 33 159 B P N43332 00 P N44243 00PA...

Page 156: ...SPRING SCALE PIPER NAVAJO SERVICE MANUAL 161 TRAILING EDGE I II AN3 38 BOLT FULLY INSERTED Figure 4 20 Elevator Friction Measurement Revised 9 23 80 STRUCTURES IG12...

Page 157: ...spring scale attached position the elevator trailing edge down approximately 2 inches from the neutral position c Record the force see Note 2 required to raise the elevator through the neutral positio...

Page 158: ...static limit per Table IV I and is satisfactory e If the rudder is leading edge heavy with the master test weight installed trim weights if installed and or material from the surface balance weight m...

Page 159: ...it may be installed per instructions given in Paragraph 4 94 c Install rudder tip and secure with all attaching screws d With the rudder completely reassembled recheck the balance to insure that it i...

Page 160: ...BALANCE WEIGHT P N 54159 03 PIPERNAVAJO SERVICE MANUAL 163 TRIM WEIGHT P N 53892 02 RUDDER ASSEMBLY 40046 39 I Figure 4 23 Balancing Rudder Revised 9 23 80 STRUCTURES 1G16...

Page 161: ...4 0 2024 T3 2024 0 THICKNESS 020 025 025 032 032 NUMBER MATERIAL 7 NOTE LEFT WING SHOWN RIGHT OPPOSITE AND NOTED MATERIAL OUTLINED IN DOTS USED ON RIGHT WING ONLY HEAT TREAT TO 2024 T4 AFTER FORMING I...

Page 162: ...sing MS20426AD 3 rivets e Reinstallation of the elevator end rib may be accomplished by the following procedure 1 Position the end rib 5 and temporarily secure the skin to the rib with sheet metal fas...

Page 163: ...MATERIAL 020 025 025 032 032 7 2024 T3 8 2024 0 9 2024 T3 10 2024 T3 11 321 ST STL THICKNESS 040 040 051 064 015 NOTE LEFTWING SHOWN RIGHT OPPOSITEAND NOTEDMATERIAL OUTLINEDIN DOTS USED ON RIGHTWING O...

Page 164: ...TERIAL 020 025 025 032 032 7 8 9 10 11 2024 T3 2024 0 2024 T3 2024 T3 321 ST STL THICKNESS 040 040 051 064 015 NOTE LEFT WING SHOWN RIGHT OPPOSITE AND NOTED MATERIAL OUTLINED IN DOTS USED ON RIGHTWING...

Page 165: ...PIPERNAVAJOSERVICEMANUAL 165 PLATE Figure 4 26 Typical Access Holes Revised 9 23 80 STRUCTURES 1G21...

Page 166: ...ARDTOOLINGHOLE 4 ADDITIONALANCHOR NUT 5 RIB 6 RIVETS MS20425AD3 18 REQ 7 ATTACHMENT CLIP 8 RIVET CR2249 4 2 REQ 9 ELEVATORSPAR 2 3 4 5 6 7 6 Figure 4 27 Installation of Balance Weight Anchor Nut Eleva...

Page 167: ...r 3 296 inches aft of the center of the forward tool hole 1 c Position anchor nut NAS686A3K and mark attachment holes Drill 098 of an inch holes and dimple to 100 degrees d Secure anchor nut using riv...

Page 168: ...3 250 HOLE 2 30 168 B 1 RIVET MS20470AD4 4 REQ 2 RIVET MS20426AD3 12 REQ 3 CHANNEL 4 ADDITIONALANCHOR NUT 5 EXISTINGANCHOR NUT Figure 4 28 Installation of Balance Weight Anchor Nut Elevators P N 43757...

Page 169: ...K MS20426AD3 0 3 296 1 FORWARDTOOLINGHOLE 2 EXISTING WEIGHT 3 ADDITIONALANCHORNUT 4 RIVET MS20426AD3 6 REQ 5 RIVET CR2249 4 2 4 REQ 6 RIVET MS20470AD3 5 REQ Figure 4 29 Installation of Rudder Balance...

Page 170: ...5 16HOLE 2 REQ PIPER NAVAJO SERVICE MANUAL 1043 AN44A 2 REQ 3 BREAK ALL SHARP EDGES CORNERS MATERIAL ALUMINUM ORSTEEL T STOCK I Figure 4 30 Ballast Weight Lifting Handle PA 31 300 Revised 9 23 80 STR...

Page 171: ...k the mixture of resin fibers and catalyst into the damaged area using the sharp point of a putty knife or stick to press it into the bottom of the hole and to puncture any air bubbles which maybe pre...

Page 172: ...ee from center to edges to remove all air bubbles and assure adhesion around edge of hole Air bubbles will show white in the patch and they should all be worked out to the edge Remove excess resin bef...

Page 173: ...e upon cooling c Deep Scratches Shallow Nicks and Small Holes Less than 1 inch in diameter Refer to Figure 4 33 1 Solvent cements will fit virtually any of these applications If the area to be repaire...

Page 174: ...pleted sand to obtain a surface finish of acceptable appearance TABLE IV II LIST OF MATERIALS THERMOPLASTIC REPAIR ITEMS DESCRIPTIONS SUPPLIERS Buffing and Rubbing Compounds Automotive Type DuPont 7 D...

Page 175: ...PIPER NAVAJO SERVICE MANUAL 871 Hot Air Gun Figure 4 31 Surface Scratches Abrasions or Ground in dirt 871 Figure 4 32 Deep Scratches Shallow Nicks and Small Holes Revised 9 23 80 STRUCTURES 1H7...

Page 176: ...PIPERNAVAJOSERVICEMANUAL S25 Figure 4 33 Mixing of Epoxy Patching Compound 870 Figure 4 34 Welding Repair Method Revised 11 15 82 STRUCTURES 1H8...

Page 177: ...the repair has cured If patching compound is used the repair should be made in layers not exceeding a 1 2 inch in thickness at a time thus allowing the compound to cure and insuring a good solid build...

Page 178: ...urface by wiping with a clean dry cloth c Outline the area to which the liquid safety walk compound is to be applied and mask adjacent surfaces NOTE Newly painted surfaces shall be allowed to dry for...

Page 179: ...831 ABS ROD PIPER NAVAJO SERVICE MANUAL PATCHING 82f DAMAGED AREA 0 Figure 4 36 Various Repairs Revised 11 15 82 STRUCTURES 1H11...

Page 180: ...827 I PIPER NAVAJOSERVICEMANUAL Figure 4 37 Repair of Stress Lines 829 PROFILE VIEW INDICATING DAMAGED AREA Figure 4 38 Repair of Impacted Damage Revised 11 15 82 STRUCTURES 1H12...

Page 181: ...from all contaminates and no moisture present If liquid safety walk is installed the area must be prepared as follows a Area must be masked off to protect painted surfaces b Apply suitable stripper ME...

Page 182: ...ve to adhesive contact A sponge or spray bottle can be used 2 After the liner has been removed make sure that the entire adhesive surface has been saturated with wetting solution 3 Remove boot 4 Now c...

Page 183: ...s with a gauge of less than 060 should be installed with cement diluted with one part MEK to two parts cement for smoother neater installation c Use only clean lint free cloths for cleaning and activa...

Page 184: ...a line on the structure to connect the upper and lower marks previously put on the masking tape Cement will now be dry and tack free Position the shoe on the structure dry cemented surfaces against ea...

Page 185: ...ACTIVATEAT CENTER PIPER NAVAJO SERVICE MANUAL VIEW 3 VIEW 2 VIEW 1 VIEW 5 VIEW 4 POINTED SCISSORS VIEW 6 VIEW 7 Figure 4 39 Installation of Radome Erosion Shield Added 3 14 83 STRUCTURES 1H17...

Page 186: ...der and loosening edges of erosion shield Restitch shoe at its trailing edge using 1 8 steel stitcher Inspect complete trailing edge to see that it is firmly bonded Refer to Figure 4 39 View 7 4 115 W...

Page 187: ...AS REQUIRED 2024T4ALUM AFT WL 13375 SEESTEPF OF INSTRUCTIONS PIPER NAVAJO SERVICE MANUAL MS20470 AD4 6 REQ 53016 REINFORCEMENT 52694 0 1 NEW 41658 0 1 OLD Figure 4 40 Wing Front Spar Attachment Bulkh...

Page 188: ...stal 5 15 Installation of Aileron Trim Assembly Control Pedestal 1H23 1H23 112 112 112 112 116 119 119 119 1112 1113 1113 1115 1115 5 16 5 17 5 18 5 19 5 20 5 21 Removal of Aileron Trim Assembly Wing...

Page 189: ...5 40 Rudder Controls 1J9 5 41 Removal of Rudder Control Cables IJ9 5 42 Installation of Rudder Control Cables IJ12 5 43 Removal of Rudder Horn 1J12 5 44 Installation of Rudder Horn 1J12 5 45 Rigging a...

Page 190: ...lap Actuator Motor 5 72 Disassembly of Flap Actuator Motor 5 73 Service of Flap Actuator Motor 5 74 Assembly of Flap Actuator Motor 5 75 Installation of Flap Actuator Motor 5 76 Removal of Flexible Ac...

Page 191: ...ontal stabilizer or vertical fin With the rotation of the drum a screw is moved fore or aft to allow for the positioning of the trim tab To indicate the position of the trim tab a sender unit attached...

Page 192: ...b 172 A Rudder Rudder Trim Tab 172 B PA 31 325 REFERTO LATEST PIPER S B NO 739 FLAP SERIAL NOS 31 2 THRU 31 7812129 Control Wheel Rudder Pedal 173 3 00 MODEL X PA 31 8 25 25 MEASURED FROM FACE OF INST...

Page 193: ...2 LBS 100 F 45 LBS 32 LBS 26 LBS NOTES 1 TOLERANCE 2 LBS 2 AIRCRAFT SHOULD BE ALLOWED TO STABILIZEIN A CONSTANTTEMPERATUREFORA MINIMUM OF TWO HOURSPRIORTO CHECKINGAND ADJUSTING TENSTIONS CABLE TENSION...

Page 194: ...pins are installed in their proper location and are not interfering with control cable travel i When installing rod end jam nuts refer to Figure 5 la for proper installation method j Clip type lockin...

Page 195: ...remove the floor panel located between the control pedestal and left side of the fuselage Loosen one of the aileron cable turnbuckles at fuselage station 100 0 to relieve tension from the vertical rol...

Page 196: ...E ASSEMBLY 48 SCREW ADJUSTMENT 49 COVER 50 SPROCKET 51 LINK ASSEMBLY 52 CONTROL CABLE AILERON 53 CONTROL CABLE ELEVATOR 54 CHAIN AILERON 55 PLATE CABLE ATTACH 56 GUARD CHAIN 57 BUSHING 58 NUT 59 WASHE...

Page 197: ...PIPER NAVAJO SERVICE MANUAL 174 SKETCHB 176 177 SKETCHC SKETCHD Figure 5 1 Control Column Installation cont Reissued 10 12 79 SURFACE CONTROLS 115...

Page 198: ...extensions that aid in bly See item 2 below if tube extensions are installed a Position but do not attach control arms 11 13 16and 18 on uninstalled torque tube assembly 14 b Lubricate bearings 15 an...

Page 199: ...allow 002 of an inch clearance between the square tube on one roller and 000 clearance on the opposite roller Finish by installing angles 71 shimmed with spacer washers 70 as required and tighten bol...

Page 200: ...sprocket housing h For the PA 31 325 only rig the bobweight as follows 1 With the elevator controls properly rigged according to Paragraph 5 27 place the elevator in the 4 5 down position 2 Position t...

Page 201: ...g stations 29 0 and 150 0 and within the fuselage at station 164 5 4 Draw the cable back through the fuselage through the wing and out through the access hole at the aileron bellcrank e Removal of the...

Page 202: ...PRING 28 SPRING 29 SPRING 30 CABLE 31 CONNECTOR 32 BOLTASSEMBLY 33 SHAFT 34 LOCKNUT 35 CONNECTORROD 36 ARM 37 SENDER 38 BRACKET 39 GUARDBOLT 40 DRUM 41 HOUSING 42 CAP BOLT 43 SCREWSTOP 44 SCREW NOTE B...

Page 203: ...NOTES BEFORE DISASSEMBLING USE RED ENAMEL PAINT TO RESTORE COLOR CODE ON END OF BALANCE CABLE AND AFT BELLCRANK LUG OF BOTH AILERON CONTROL SYSTEMS SKETCHF SKETCHB Figure 5 2 Aileron and Trim Control...

Page 204: ...all the cable guard pins at wing stations 29 0 and 150 0 and fuselage station 171 0 c The left balance cable 23 may be installed by the following procedure WARNING Ensure that red end on balance cable...

Page 205: ...e and secure 5 12 RIGGING AND ADJUSTMENT OF ALLERON CONTROLS Refer to Figure 5 2 a To rig the aileron controls set the right and left aileron bellcranks in neutral position by attaching an aligning to...

Page 206: ...fuselage at station 100 0 Cable tension should be taken at the non ridged primary control cable Safety turnbuckles NOTE Cable tension should be taken on one of the non rigid cables only Cable tension...

Page 207: ...e fuselage and wing Remove the aileron and aileron trim pulleys in the wing at station 29 0 g Remove the outboard access plate located on the aft side of the wheel well Remove one screw from each set...

Page 208: ...well Install seats 5 16 REMOVALOFAILERON TRIMASSEMBLY Wing Refer to Figure5 2 a Remove the access plates located under the wing along the trailingedge at stations 92 5 117 5 151 5 and 171 0 b Disconne...

Page 209: ...ates 5 20 RIGGING AND ADJUSTMENT OF AILERON TRIM Refer to Figure 5 2 a To adjust the aileron trim it must be ascertained that the following has been accomplished either during installation or as a pre...

Page 210: ...trol sector and the aft control cables beginning at fuselage station 110 5 the following procedure may be used 1 Remove the left pilot s seat and the floor panel located on the left of the control ped...

Page 211: ...the cables to the forward cables at station 110 5 3 Install the cable guard pins for the cable 10 that connects to the upper end of the elevator bellcrank right cable at stations 122 5 153 0 192 0 24...

Page 212: ...en with the trailing edge of the elevator This tool may be fabricated from dimensions given in Figure 5 28 d With the elevator bellcrank neutral adjust the turnbuckles 3 at fuselage station 110 5to ob...

Page 213: ...LE 7 FAIRLEAD 8 PULLEY 9 RUB BLOCKS 10 CONTROL CABLE 11 CONTROL CABLE 12 TURNBUCKLE 13 TRIM CABLE 14 BELLCRANK 15 ROD CONTROL 16 SPRING BUNGEE 17 LINE 18 ARM ELEVATOR 19 TRIM SCREW ASSEMBLY 20 ROD TRI...

Page 214: ...187 PIPER NAVAJO SERVICE MANUAL Figure 5 5 Elevator and Elevator Trim Controls cont Revised 5 3 84 H22 1I22 SURFACE CONTROLS...

Page 215: ...and installation of cable guards h Check the complete elevator control system including Autopilot if installed to determine the friction in the system Refer to Elevator Control System Friction Measur...

Page 216: ...to be removed then remove the access plate attached to the underside of the horizontal stabilizer and block the cables at the screw assembly instead of in the fuselage g Mark one set of cable ends to...

Page 217: ...If the cables from the elevator are not installed pull the cables tight and block them in the fuselage at bulkhead 244 0 e With the cables installed and connected install the cable guard pins at stati...

Page 218: ...wassemblyand drawthe trim cables from the fuselageand elevator 5 32 INSTALLATIONOF ELEVATORTRIMASSEMBLY Elevator Refer to Figure5 5 a Ascertain that the trim cable assemblyis evenly wrapped centered o...

Page 219: ...ENT OF ELEVATOR TRIM Refer to Figure 5 5 PPS 50046F a To adjust the elevator trim it must be ascertained that the following has been accomplished either during installation or as a preadjustment check...

Page 220: ...PIPERNAVAJOSERVICEMANUAL 190 Figure 5 8a CableRoutingon ElevatorTrim Servo Reissued 10 12 79 SURFACECONTROLS 1J4...

Page 221: ...ned that the following has been accomplished either during installation or as a preadjustment check 1 Remove access plate on underside of the right horizontal stabilizer 2 Cable tension is set as give...

Page 222: ...inter not reach either extreme position on the dial return the tab to the full nose down position loosen the sender in its bracket and slide it closer to the trim screw Tighten the sender and recheck...

Page 223: ...n play Spacers are available in thickness of 012 02 P N 81102 35 018 02 P N 81102 36 and 032 P N 81102 37 d Lubricate and slide the torque tube 6 through the side of the fuselage and right bearing 21...

Page 224: ...R 19 BOLT ASSEMBLY 20 BOLT CAP 21 BLOCK BEARING 22 BRACKET MOUNTING 23 PLATE 24 ROD 25 CONTROL CABLE 26 BRAKE CYLINDER 27 PEDAL RIGHT OUTER 28 PEDAL RIGHT INNER 29 ROD STEERING 30 NUT JAM 31 BOLT ASSE...

Page 225: ...the interior access panel to the aft section of the fuselage d Remove the tail cone and the access plate under the rudder on the top aft section of the fuselage e Loosen the aileron and rudder interco...

Page 226: ...2 SCREW ASSEMBLY TRIM 23 BOLT ASSEMBLY STOP 24 BOLT ASSEMBLY ARM 193 PIPER NAVAJO SERVICE MANUAL 25 BRACKET MOUNTING 26 SENDER 27 SHAFT SENDER 28 ARM SENDER 29 STOP TRIM SCREW 30 SCREW TRIM 31 HOUSING...

Page 227: ...E IS ROUTED BETWEEN THE CABLE GUARD AND THE PULLEY 48 FWD VIEWA A VIEW A A PIPER NAVAJO SERVICE MANUAL 194 SKETCHB SKETCHD SKETCHE 1046 C SKETCH F Figure 5 10 Rudder and Rudder Trim Controls cont Reis...

Page 228: ...n 100 0 d Mark one end of the rudder horn 17 and cable end 45 to facilitate installation and disconnect the cables from the rudder horn e Unbolt the rudder horn 17 from the rudder torque tube plate 42...

Page 229: ...tudinally and laterally Longitudinal leveling is not mandatory if a propeller protractor is used for this adjustment 2 Allow the elevator to remain in its down position 3 Position the jig on the eleva...

Page 230: ...tateinstallation and disconnectthe cables 16 and 20 at the turnbuckles 18 g Removethe cableguard pin at fuselagestations 123 5and 243 5 h Remove one screw from each set of rub blocks 19 at stations 16...

Page 231: ...ent them from unwrapping b Position the screw assembly in the vertical fin install the attachment bolts and secure c Draw the cables 16 through the fin into fuselage and connect them at the turbuckles...

Page 232: ...n the rod end 36 at the aft end of the tab control rod Turn the rod end until the trailing edges align Secure attachment bolt 37 and rod end jam nut 35 e Turn the trim in each direction to screw stops...

Page 233: ...the condition of the bushings 7 in the housing bracket for excess wear g To install and wrap the trim cable locate the center of the cable measuring from end to end h Insert the center of the cable in...

Page 234: ...RIM SCREW ASSY ELEVATOR 3 FLEXIBLEJOINT 4 CONTROL KNOB AILERON 5 TRIMSCREWASSY RUDDER 6 CONTROLWHEEL RUDDER 7 CONTROLWHEEL ELEVATOR 8 THROTTLE CONTROLS 9 PROPELLERCONTROLS 10 MIXTURE CONTROLS 11 FRICT...

Page 235: ...tion pin on the motor fits in the pin hole in the mounting bracket Secure the holding clamp 9 c Connect the flexible drive shaft ends 4 and 6 to the motor per Paragraph 5 61 and secure nut 10 with 040...

Page 236: ...40 13 MOUNTING BRACKET MOTOR 14 SPREADER ASSEMBLY 15 ROD LINKAGE 16 BUSHING AND SCREW ASSY 17 FLAP HORN 18 BOLT ASSEMBLY 25 SWITCH UP LIMIT 19 TUBE TRANSMISSION 26 ADJUSTMENT BOLT UP LIMIT 20 SWITCH D...

Page 237: ...tation 92 50 b Disconnect the transmission tube 19 from the flap horn bracket 17 c Remove the safety wire 12 and disconnect the flexible actuator shaft 4 and 6 d Remove the spreader bushing and washer...

Page 238: ...tube 19 while the flap is in both the near extended and retracted positions Do not run flap to its extreme position end of tracks 5 Should the tube 19 and horn 17 not align disconnect the tube and lo...

Page 239: ...ke a full extension run to insure that the momentum of the flap going down and tightening ofthejam nut has not moved the flap setting from the setting tolerance CAUTION Flaps must stop prior to making...

Page 240: ...indicator on the instrument panel shows the flap at the take off position bottom of white arc c Tighten the arm 22 on the sendershaft Checkthe three flap positions retracted take off and extended wit...

Page 241: ...rees a Lower the flaps and remove the access plates to the limit switches in the left wing false spar at stations 92 5 and 101 0 b With the flaps part way down depress the up limit switch and select f...

Page 242: ...tage in excess of 0 55 VDC between the left wing flap rheostat wiper and the right wing flap rheostat wiper the amplifier will shut the system off This condition corresponds to a maximum differential...

Page 243: ...MANUAL A497 RT2 RT3 RC RL RR GND AMPLIFIER AMPLIFIER ADJUSTMENT DOWN LIMIT SWITCH RHEOSTAT LINKAGE LEFT CONTROLRHEOSTAT RL 0 Figure 5 18 Flap System Diagram Calco Revised 10 12 83 Effectivity CALCO SU...

Page 244: ...xcept brushes bearings and armature with a suitable dry cleaning solvent b Examine all parts for cracks burrs and corrosion c Visually inspect the armature for the following 1 Commutator for pitting s...

Page 245: ...SY FRONT 6 BRUSH ASSY 7 SPRING BRUSH 8 INSULATOR ASSY 15 LATER MOTORS 16 15 2 1 19 EARLIER MOTOR 6 7 SKETCH A 4 9 SCREW 10 STUD CONTACT 11 NUT HEX 12 WASHER LOCK 13 SHOULDER WASHER 14 END BELL 15 BEAR...

Page 246: ...hen inserting armature assembly into sleeve and magnet assembly g Position front end bell on sleeve so that mounting holes are in line with pin in sleeve and lockwire hole is to the right of the pin h...

Page 247: ...tments per instructions given in this section d Install the access plates panels clamps grommets and seats 5 78 REMOVAL OF FLAP TRANSMISSION Refer to Figure 5 20 a Lower the flap and remove the access...

Page 248: ...R 14 ROD LINKAGE 15 BUSHING AND SCREW ASSY 16 FLAP HORN 17 BOLT ASSEMBLY 18 TUBE TRANSMISSION 19 SWITCH DOWN LIMIT 20 SHAFT SENDER 21 ARM SENDER 22 SENDER FLAP POSITION 23 SWITCH UP LIMIT 24 ADJUSMENT...

Page 249: ...nd RR rheostat right The voltages present or read at the center taps will be referred to as VC VL and VR respectively a Proper operation requires that the rheostat RL on the left flap respond to any c...

Page 250: ...cal limits be reached just prior to the mechanical bottoming out of the rollers in the slot 6 Repeat the procedure of step 5 preceding to adjust the DOWN limit switch The above note still applies 7 Wi...

Page 251: ...shafts to the transmissions Be sure that the splines are properly engaged and run the shaft attaching nut on finger tight Safety with MS20995C41 wire 12 Remove the covers from RT2 and RT3 on the flap...

Page 252: ...the position selected VC and the position sensor VL have been satisfied If this has happened reselect flaps to full DOWN readjust voltages at RL and RR per step 17 with greater spread between VL VR an...

Page 253: ...flap indicator Trimmer located on the inboard of the amplifier box opposite the connector end so that the flap indicator needle falls in the center of the APPROACH graduation 3 Check the location of...

Page 254: ...n the aircraft instrument panel Move the flap selector handle to the full DOWN position and activate the test switch at approximately 15degrees of flap travel Observe that the wing flap light amber lo...

Page 255: ...f both K1 and K2 relays h Disconnect the flex shaft s from the motor assembly i If the drive motor fails to operate check the UP and DOWN limits switches in the 27 5 olt leg of the coils of relays K1...

Page 256: ...SKETCHB Figure 5 25 Flap RiggingAdjustments RIGGING TOOL SEE NOTE NOTE REFER TO PIPER PARTS CATA LOG FOR FLAP RIGGING TOOL P N 71505 2 AND 71505 3 I Figure 5 26 Use of Flap Rigging Tool Revised 10 12...

Page 257: ...etry and rerig flap system q Connect the voltmeter between test jacks RR and GND on the amplifier Voltage should equal RC voltage within 0 3 volts r Connect the voltmeter between test RL and GND on th...

Page 258: ...W J1 28 PIPER NAVAJO SERVICE MANUAL EL1426 AIRCRAFT ELECTRICAL SYSTEM MOTOR C B 27 5V NOTE SWITCHESSHOWN AT 15 OR MID FLAP RANGE A17 27 5V V 2K 5 A7 4 12 3 Figure 5 26a Amplifier Electrical Schematic...

Page 259: ...8482 BUTAMPLIFIER P N 8482 CAN NOT REPLACEAMPLIFIER P N 8502M1 KI UP RELAY DOWN RELAY MOTOR T RI VI R63 510 A1 R41 R99 J1 8 82K 0 RR23 2K CR62 CR13 R60 R64 620 510 R4 I Figure 5 26a Amplifier Electri...

Page 260: ...PIPER NAVAJO SERVICE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 1K20...

Page 261: ...L251 AIRCRAFT ELECTRICAL SYSTEM MOTOR CB 27 5V NOTE SWITCHESSHOWN AT 15 OR MID FLAP RANGE R21 THM I R21 430 8 Figure 5 26b Amplifier Electrical Schematic Calco P N 8502M I Revised 10 12 83 Effectivity...

Page 262: ...8482 BUT AMPLIFIER P N 8482 CANNOT REPLACE AMPLIFIER P N 8502M1 vi 15v R29 CR38 510 8 2V R30 510 UP RELAY K2 MOT DOWN RELAY CR24 015 016 U7 6 U7 8 U5 1 U7 10 U5 10 CR27 I A2 I Figure 5 26b Amplifier E...

Page 263: ...ance to control wheel rotation System not lubricated properly Lubricate system Cable tension too high Control column hori zontal chain improperly adjusted Pulleys binding or rub bing Cables not in pla...

Page 264: ...rdance with Paragraph 5 6 Rig in accordance with Paragraph 5 12 Adjust in accordance with Paragraph 5 12 Aileron bellcrank stops not adjusted proper ly Adjust in accordance with Paragraph 5 12 Correct...

Page 265: ...or worn Replace pulley Check linkage and tight en or replace Trim control wheel moves with excessive resistance System not lubricated properly Cable tension too high Pulleys binding or rub bing Cable...

Page 266: ...on Trim indicator fails to indicate any movement Trim sender unit not adjusted properly Low voltage in system Circuit breaker open Master switch not on Adjust in accordance with Paragraph 5 21 Check p...

Page 267: ...l cables correctly Resistance to elevator control movement System not lubricated properly Lubricate system Cable tension too high Binding control column Pulleys binding or rub bing Cables not in place...

Page 268: ...l Elevator arm stops incorrectly adjusted Adjust stop screws per Paragraph 5 27 Elevator control rod incorrectly adjusted Adjust control rod per Paragraph 5 26 Correct elevator travel cannot be obtain...

Page 269: ...and 5 35 Replace pulley Check linkage and tight en or replace Trim control wheel moves with excessive resistance System not lubricated properly Cable tension too high Pulleys binding or rub bing Cable...

Page 270: ...ion Trim indicator fails to indicate any move ment Trim sender unit not adjusted properly Low voltage in system Circuit breaker open Master switch not on Adjust in accordance with Paragraph 5 36 Check...

Page 271: ...low Linkage loose or worn Broken pulley Bolts attaching rudder to bellcrank are loose Adjust cable tension per Paragraph 5 45 Check linkage and tight en or replace Replace pulley Tighten bellcrank bo...

Page 272: ...pedals not neutral when rudder is streamlined Incorrect rudder travel Rudder cables incor rectly rigged Rudder bellcrank stop incorrectly adjusted Rig in accordance with Paragraph 5 45 Rig in accordan...

Page 273: ...o Paragraphs 5 48 5 50 and 5 53 Replace pulley Check linkage and tight en or replace Trim control wheel moves with excessive resistance System not lubricated properly Pulleys binding or rub bing Lubri...

Page 274: ...tion Trim indicator fails to indicate any move ment Trim sender unit not adjusted properly Low voltage in system Circuit breaker open Master switch not on Adjust in accordance with Paragraph 5 54 Chec...

Page 275: ...uit relay Ground open from flap C motor circuit relay t Ground open from flap C selector switch tion Defective flap motor R Defective circuit Is wiring pair Battery switch off Turn switch on so Flap s...

Page 276: ...id Defective circuit wiring Up limit switch incor rectly adjusted Down limit switch in correctly adjusted Incorrect adjustment of the transmission tube Binding between flexible shaft and motor Binding...

Page 277: ...xible shaft Determine cause and replace or repair Check operation in accordance with paragraph 5 68 Faulty time delay switch No indication of flap position on indicator Defective indicator unit Defect...

Page 278: ...STEM Cause Amplifier component failure Flap motor circuit breaker off Flaps asymmetric Potentiometer failure Motor and or relay failure Power lost to amplifier Annunciator failure Flap asymmetric con...

Page 279: ...PER NAVAJO SERVICE MANUAL 198 1 00 MATERIAL 25TO 50 ALUMINUM ORSTEEL PIPER P N 71817 2 I 6 50 2 39 125R 50 1 00 50 50R 3 39 Figure 5 27 Fabricated Bellcrank Rigging Tool Revised 9 24 81 SURFACE CONTRO...

Page 280: ...CHBOLT FILE TO LENGTH PLACETHISSIDENEXTTOELEVATOR 34 25 141 14 625 DRILL AND TAP 1 4 INCHBOLT FILETO LENGTH 50 to 1 0 MATERIAL ALUMINUM PLATE SPARMATERIALMAYBE USED Figure 5 28 Fabricated Aileron Elev...

Page 281: ...22 125 POINTER 25 1500 7 50 4 50 17 00 100 PIPER NAVAJO SERVICE MANUAL 1054 MATERIAL ALUMINUM PLATE Figure 5 29 Fabricated Rudder Rigging Tool Reissued 10 12 79 1L17 SURFACE CONTROLS...

Page 282: ...PIPER NAVAJO SERVICE MANUAL 1L18 THRU 1L24 INTENTIONALLY LEFT BLANK 1L18...

Page 283: ...PIPER AIRPLANE SERVICE MANUAL CARD 2OF5 PA 31 PA 31 300 PA 31 325 PIPER AIRCRAFT CORPORATION PART NUMBER 753704 2A1...

Page 284: ...age additions are not identified by revision lines Revisions to service manual 753 704 issued October 1 1966are as follows Revisions Publication Date Aerofiche Card Effectivity ORG661001 CR720707 CR79...

Page 285: ...0 VI VII VIII VIIIA VIIIB IX X HYDRAULIC SYSTEM LANDING GEAR AND BRAKE SYSTEM POWER PLANT PA 31 Turbo POWER PLANT PA 31 300 POWER PLANT PA 31 325 AEROFICHE CARD NO 3 FUEL SYSTEM INSTRUMENTS 2A9 2E4 2H...

Page 286: ...2C1 6 17 Location of PowerPack Components WiebelTool 2C4 6 18 Hydraulic PowerPack WiebelTool 2C5 6 19 PowerPack Manifold WiebelTool 2C9 6 20 PowerPack Handle ReleaseMechanism Wiebel Tool 2C11 6 21 Sa...

Page 287: ...jusuating Main Gear Down Light Switch 2F18 7 12 Gear Warning Switches Installation 2F20 7 13 Nose Wheel Assembly 2F23 7 14 Main Wheel Assembly 2F24 2 7 15 Brake Insallation 2GI 7 16 Wheel Brake Assemb...

Page 288: ...Engine Installation Height of Springin Distributor BlockTower Contact Points EngineTimingMarks Timing LightConnected to Magneto Timing Marks on Magneto Rotor Painted Tooth Centered inTimingWindow Tim...

Page 289: ...nspection and Repair Hydraulic Pump Troubleshooting Chart Hydraulic System Troubleshooting Chart Landing Gear System Propeller Specifications PA 31 310 and 325 Turbocharger Installation Torque Values...

Page 290: ...2A8 INTENTIONALLY LEFT BLANK...

Page 291: ...est Unit Optional Identification of Power Packs Hydraulic Power Pack Ozone 6 21 Removal of Power Pack 6 22 Disassembly of Power Pack 6 23 Disassembly of Manifold 6 24 Disassembly of Hand Pump Suction...

Page 292: ...isassemblyof Manifold 6 59 Disassemblyof Hand PumpSuctionScreen 6 60 Disassemblyof HandPump ReliefValve 6 61 Disassemblyof MainReliefValve 6 62 Disassemblyof PriorityValve 6 63 Disassemblyof Hand Pump...

Page 293: ...erial Nos 31 5 thru 31 511 2C19 6 99 Installation of Gear Selector Handle Mechanism Serial Nos 31 5 thru 31 511 2C20 6 100 Inspection of Landing Gear Selector Handle Mechanism Serial Nos 31 5 thru 31...

Page 294: ...r Actuating Cylinder 2D11 6 139 Cleaning Inspection and Repair of Gear Door Actuating Cylinders 2D13 6 140 Assembly of Gear Door Actuating Cylinder 2D13 6 141 Installation of Gear Door Actuating Cylin...

Page 295: ...2A13 INTENTIONALLY LEFT BLANK...

Page 296: ...2A14 INTENTIONALLY LEFT BLANK...

Page 297: ...on later airplanes A solenoid operated lock is located behind the instrument panel as part of the selector assembly to prevent the lever from being moved to the up position while the airplane is on t...

Page 298: ...ure in the closed door cylinders The valveopens and allowsfluid to flow to the handle release valve thus returning the selectorlever to neutral With the selectorin neutral fluid is allowed to circulat...

Page 299: ...S SHOWN DOWN AND LOCKED DOORS CLOSED AND SELECTOR HANDLE IN NEUTRAL POWER ON 2 REFER TO FIGURE 6 4 FOR SCHEMATIC OF POWER PACK ELECTRICAL SYSTEM Figure 6 1 Schematic Diagram of Hydraulic System Ozone...

Page 300: ...DOORS CLOSED AND SELECTOR HANDLE IN NEUTRAL POWER ON 2 REFER TO FIGURE 64 FOR SCHEMATIC OF POWER PACK ELECTRICAL SYSTEM FILLER AND BRAKE RESERVOIR DRAIN NOSE GEAR ACTUATOR Figure 6 2 Schematic Diagram...

Page 301: ...D DOORS CLOSED AND SELECTOR HANDLE IN NEUTRAL POWER ON 2 REFER TO FIGURE 6 4 FOR SCHEMATIC OF POWER PACK ELECTRICAL SYSTEM SUCTION FILL FILTER RAIN OSE GEAR ACTUATOR MAINGEAR ACTUATOR Figure 6 3 Schem...

Page 302: ...MAIN GEAR LIMIT SWITCH LEFT NOTES 1 GEAR IS SHOWN DOWN AND LOCKED DOORS CLOSED AND SELECTOR HANDLE IN DOWN NEUTRAL POWER ON 2 POWER ON DOORS CLOSED POWER OFF DOORS OPEN Figure 6 4 Schematicof PowerPa...

Page 303: ...LVE R ENGINE 18 VALVE 19 LINE PRESSURE L ENGINE 20 LINE RETURN L ENGINE 21 LINE GEAR DOWN 22 LINE GEAR UP 23 PANEL WHEEL WELL 24 HOSE GEAR UP 25 HOSE GEAR DOWN 26 LINE RETURN R ENGINE 27 LINE PRESSURE...

Page 304: ...VALVE R ENGINE 18 VALVE 19 LINE PRESSURE L ENGINE 20 LINE RETURN L ENGINE 21 LINE GEAR DOWN 22 LINE GEAR UP 23 PANEL WHEEL WELL 24 HOSE GEAR UP 25 HOSE GEAR DOWN 26 LINE RETURN R ENGINE 27 LINE PRESS...

Page 305: ...E R ENGINE 18 VALVE 19 LINE PRESSURE L ENGINE 20 LINE RETURN L ENGINE 21 LINE GEAR DOWN 22 LINE GEAR UP 23 PANEL WHEEL WELL 24 HOSE GEAR UP 25 HOSE GEAR DOWN 26 LINE RETURN R ENGINE 27 LINE PRESSURE R...

Page 306: ...plete system including brakes if incorporated should be drained and flushed to remove the contaminated fluid The cause and type of contamination should be determined and corrected Use the followingste...

Page 307: ...ckingPressure Low PressureThermal ReliefVent 150P S I 150P S I ValveReseat Pressure Priority ValveCrackingPressure 600 P S I 600P S I Hand Pump CheckValveCracking 10P S I 10P S I Pressure LandingGear...

Page 308: ...Pump Check Valve Cracking Pressure Landing Gear Position Release Time Delay Valve Hydraulic Fluid Required Weight Dry Power Pack Hydraulic Fluid Flow Rate Both Pumps Operating WTC2135 1 1900 P S I 190...

Page 309: ...or stop filling operation when fluid is seen draining from the overflow c If the system must be operated during various ground checks overhaul or inspection of its components remove the protective ca...

Page 310: ...d d Set the hydraulic test unit bypassvalvefull open e Place the landing gearselectorhandlein the fulldown position f Very slowly close the bypass valveuntil the handle trips back to neutral Read the...

Page 311: ...reliefvalvepressure andflow rate are givenin Tables VI Iand VI II e The Ozone power pack must be removed and partially disassembledto adjust the main relief valve setting Refer to Paragraph 6 48 The...

Page 312: ...The followingprocedure will purgeair from system and fill the reservoir a Placethe airplane on jacksin accordancewithJacking SectionII b Cyclethe landing gearthroughtwo complete cyclesin accordancewi...

Page 313: ...c pump before reconnecting the hoses to the respective fittings d On later model airplanes close the suction fill and drain valve in the airplane by placing the control lever in the down position and...

Page 314: ...OW OAS2930 3 FILLER DRAIN ELBOW OAS29304 7 2 MAIN RELIEF VALVE 3 PRIORITY VALVE 4 HAND PUMP INLET FILTER 5 HAND PUMP RELIEF VALVE 6 TIME DELAY VALVE 7 DOOR VENT VALVE 8 STANDPIPE FILTER Figure6 9 Loca...

Page 315: ...CK Refer to Figure 6 10 or 6 11 After the Power Pack has been removed from the airplane and all ports are capped or plugged spray with cleaning solvent Federal Specification P S 661 or equivalent to r...

Page 316: ...2B10 INTENTIONALLY LEFT BLANK...

Page 317: ...PIPER NAVAJO SERVICE MANUAL 1064 5859 60 61 62 63 51 52 53 54 55 56 Figure 6 10 Hydraulic Power Pack Ozone 2930 1 Reissued 10 12 79 Effectivity OZONE HYDRAULIC SYSTEM 2B11...

Page 318: ...9 BUTTON 40 SCREW 41 WASHER 42 PLUG 43 BRACKET 44 SCREW 45 FITTING 46 BACK UP 47 O RING 48 NUT 49 BODY 50 TIME DELAY VALVE 51 RETAINER 52 BALL 53 O RING RETAINER HEX 54 O RING RETAINER BODY 55 SPRING...

Page 319: ...PIPER NAVAJO SERVICE MANUAL Reissued 10 12 79 HYDRAULIC SYSTEM Effectivity 2B13 OZONE Figure 6 11 Hydraulic Power Pack Ozone 2930 3 5 and 7...

Page 320: ...PRING 36 PRIORITY VALVE ADJUSTMENT 37 RETAINER ADJUSTING PLUG 38 SPRING 39 BUTTON 40 SCREW 41 WASHER 42 PLUG 43 BRACKET 44 SCREW 45 FITTING 46 BACK UP 47 O RING 48 NUT 49 BODY 50 TIME DELAY VALVE 51 R...

Page 321: ...or spool will then be extremely difficult to remove 6 23 DISASSEMBLY OF MANIFOLD Referto Figure6 12 a Cut the safety wire 35 and removethe door solenoid 16 by unscrewingfrom the manifold 29 This solen...

Page 322: ...ET DELAY 25 POPPET 26 O RING R 27 SLEEVE TRANSFER 28 O RING 29 MANIFOLD 30 LANDING SELECTOR SPOOL 31 SPOOL LANDING GEAR SELECTOR 32 O RING 33 WASHER 34 BOLT 35 WIRE SAFETY 36 BRACKET 37 NUT 38 SCREW 3...

Page 323: ...elief valve b Remove the adjusting screw 3 and locknut 2 from the top of the relief valve c Unscrew the retainer 4 d Remove the two buttons 5 and 7 spring 6 and ball 8 e Remove the poppet 9 from the p...

Page 324: ...g caps and wash all parts in dry cleaning solvent Federal Specifications P S 661 or equivalent and dry with filtered compressed air c Inspect all parts for scratches scores chips cracks and indication...

Page 325: ...and install the O ring 15 on the retainer priority assembly 14 lubricate th retainer threads and install the retainer Tighten securely e Turn the Power Pack upside down lubricate the spring 38 and but...

Page 326: ...ved much more than flush with the manifold at the end opposite the rack before the manifold is installed and the rack engaged properly with the gear an O ring will become caught The selector spool wil...

Page 327: ...t for freedom of movementin the PowerPack Checkfor slightendplay in the shaft If shaft binds remove the cam and lap inside bossof cam to obtain slightendplay in the shaft with the cam installed d Inst...

Page 328: ...washers 33 Torque the screws to 35 inch pounds and safety Do not over torque the bolts as this will cause binding in the movement of the landing gear handle f Lubricate and install the two O rings on...

Page 329: ...wires are coded with color stripes Disregard the color of wire terminals or plastic sleeving If the color codes are matched when the wires are installed the wires will be connected correctly g Contin...

Page 330: ...scale to the arm and pull both fore and aft perpendicular to the centerline of the arm to determine that it will leave the detent at a force of 9 1 2 pounds The handle release detent spring adjusting...

Page 331: ...RINGADJUSTINGPLUG 2 PIPERNAVAJO SERVICEMANUAL 202 UPPER AND LOWERSURFACES OF CAMARESYMMETRICAL HOLE HORIZONTAL Figure 6 15 Timing of Selector Spool Ozone 203 LOCATEDON LEFT SIDE OF POWER PACK HANDLE R...

Page 332: ...rom the door openfittingon the PowerPack and attach the pressurehose from the hand pump with the 150 psi pressure gaugeto the door openfitting b Check for fluid seepagewhileslowlyapplyingthe stated pr...

Page 333: ...y to be installedin the airplane 6 54 INSTALLATIONOF POWERPACK Refer to Figure6 5 6 6 or 6 7 a Reach through the forward baggagecompartment position the Power Pack withinitsmounting brackets 6 andinst...

Page 334: ...G 2 MAIN RELIEF VALVE 3 PRIORITY VALVE 4 FILTER HAND PUMP SUCTION 5 HAND PUMP RELIEF VALVE 6 TIME DELAY CHECK VALVE 7 DOOR VENT VALVE 8 STANDPIPE FILTER Figure 6 17 Location of PowerPackComponents Wie...

Page 335: ...ts poppet 6 and poppet seat 7 are matched parts and must be replaced as 38 an assembly 42 40 27 45 1 Figure 6 18 Hydraulic Power Pack WiebelTool Revised 10 12 83 HYDRAULIC SYSTEM Effectivity 2C5 WIEBE...

Page 336: ...P RING FILTER HAND PUMP 51 HAND PUMP RELIEF VALVE 52 ADJUSTING SCREW 53 SPRING 54 STEM 55 BODY SECONDARY RELIEF VALVE 56 BALL 57 SEAT 58 O RING 59 CHECK VALVE TIME DELAY 60 SNAP RING 61 O RING 62 SEAT...

Page 337: ...onnected correctly e Remove screws 46 washers 45 switch assembly 44 and insulating plate 43 Switch will remain hanging from the electrical wires Refer to Figure 6 19 f Remove plastic strap 48 attachin...

Page 338: ...lector spool 19 time delay plunger 2 and the manifold 35 are matched lapped parts If it is necessary to replace any of these three parts replace them as an assembly only f Remove the landing gear hand...

Page 339: ...ALVE 8 O RING SLEEVE 9 DOOR SELECTOR SPOOL 10 SPOOL DOOR SELECTOR 11 DOOR SOLENOID VALVE ASSEMBLY 12 SOLENOID DOOR 13 O RING SOLENOID 14 SPRING PLUNGER RETURN 15 PLUNGER 16 PIN 17 LANDING GEAR SELECTO...

Page 340: ...ove the snap ring 96 from fitting 89 c Remove guide 95 spring 94 and poppet 93 6 64 DISASSEMBLY OF STANDPIPE FILTER Refer to Figure 6 18 a Remove the standpipe filter 99 from body 67 6 65 DISASSEMBLY...

Page 341: ...th filtered compressedair c Inspect all partsfor scratches scores chips cracksandindicationsof excesswear d Inspect roll pin 4 on spurgear 3 to insureit does not extend more than 062 in from the gear...

Page 342: ...bricate threads install O ring 90 back up 91 and O ring 92 on the fitting 89 and installassemblyinto body 67 Torque to 55 inch pounds 6 77 ASSEMBLYOF PRIORITYVALVE Refer to Figure6 18 item 10 a Lubric...

Page 343: ...or plate 107 over center stud 41 f Lubricate O ring 40 and install onto center stud 41 6 82 ASSEMBLYOF MANIFOLD Refer to Figure 6 19 a Lubricate and install the O ring 20 on the landing gear selector...

Page 344: ...ent cam 5 was removed from the input shaft 6 then the parts must be assembled and indexed as shown in Figure 6 20 View A b Lubricate the input shaft 6 slide detent cam 5 and gear 3 into place and secu...

Page 345: ...ing gear selector spool rack with the input shaft gear as shown in Figure 6 22 With landing gear selector spool 5 protruding 06 inches from face A of manifold 1 and the input shaft return cam 4 in the...

Page 346: ...ack a Use only clean hydraulic fluid per MIL H 5606 b Minimum equipment needed is as follows 1 Test unit pump and hand pump with a 2500 PSI capacity 2 One hydraulic pressure gauge of 2500 PSI capacity...

Page 347: ...ar up or gear down position apply hand pump pressure very slowly until fluid flows from the hand pump relief valve CAUTION It is important that the hand pump be operated slowly as pressure is being in...

Page 348: ...door open fitting on the PowerPack and attach the pressurehose from the hand pump with the 200 PSI pressuregaugeto the door open fitting b Slowlyapply pressure to see that fluid seepsfromthe door ven...

Page 349: ...refer to Jacking Section II and operate the landing gear selector handle through its entire travel both up and down 6 98 REMOVAL OF GEAR SELECTOR HANDLE MECHANISM Refer to Figure 6 24 The removal of t...

Page 350: ...of the longlink 11 with the arm on the right sideof the torque tube and install the clevispin washerand cotter pin b Installation of Torque Tube Assembly 1 Position the bearing 9 on the right side of...

Page 351: ...8 TORQUE TUBE ARM 9 BEARING BLOCK 10 RUBBER BOOT 11 LONG ROD LINK 12 CONTROL ARM 13 SAFETY WIRE 14 POWER PACK SERIAL NUMBERS 31 5 THRU 31 511 11 Figure 6 24 Landing Gear Selector Mechanism Revised 11...

Page 352: ...dwaybetween the up and down positionwhen the arm 12 on the PowerPack 14 is at neutral d Depress the button on the solenoid lock to allow the handle to travelfreely between the two neutral positions e...

Page 353: ...osition with pin washer and cotter pin 12 3 Carefully thread the wires from the panel assembly 15 through the hole provided in the plate assembly 5 Position the panel assembly on the plate assembly In...

Page 354: ...LATE ASSY 6 LEVER ASSY 7 CABLE ASSY 8 BRACKET ASSY 9 POWER PACK 10 CONTROL ARM 11 BRACKET ASSY 12 PIN WASHER COTTER PIN 13 SOLENOID 14 MOUNTING BLOCK 15 PANEL ASSY 16 LIGHT ASSY 17 CABLE ATTACHMENT PI...

Page 355: ...3 1 2 to 6 pounds 6 106 FILLING HYDRAULIC RESERVOIR Refer to Section II Servicing Hydraulic Reservoir 6 107 BLEEDING THE HYDRAULIC SYSTEM a Jack the airplane as described in Section II b Ascertain th...

Page 356: ...BALL CHECK 11 SPRING 12 O RING PACKING 13 PLUNGER 14 O RING PACKING 15 GLAND PACKING 16 O RING 17 SCRAPER 18 BRACKET 19 SCREW ALLEN 20 LINK 21 LEVER 22 PIN FLAT HEAD 23 PIN FLAT HEAD 24 PIN FLAT HEAD...

Page 357: ...packingglandonto the smallend of the plunger 13 with the recessedend toward the smallend of the plungerandinsert the plungerwith the packing gland 15 into the pump body 16 e Position the scraper 17 on...

Page 358: ...the scraper 20 and the gland 16 fromthe plunger 13 d To remove the check valveassemblyfrom the plunger removethe snapring 7 from the plunger cavity and with a low charge of air injected into the holei...

Page 359: ...RING 16 GLAND 17 BACK UP 18 BACK UP 19 O RING 20 SCRAPER 21 BRACKET 22 QUICK CLICK PIN 23 LINK 24 QUICK CLICK PIN 25 SCREW 26 LEVER 27 GRIP 28 ROLL PIN 29 HANDLE 30 STOP 31 ROLL PIN 32 SPRING 33 DRIV...

Page 360: ...UATING CYLINDER LEFT 5 A VALVE RESTRICTOR B UNION SERIAL NOS 31 695 AND UP 6 EMERGENCY HAND PUMP 7 FILTER RIGHT PUMP 8 FILTER LEFT PUMP 9 HYDRAULIC PUMP RIGHT 10 HYDRAULIC PUMP LEFT o 11 POWER PACK AS...

Page 361: ...uid level c After pump is primed and bled of all air remove fitting and install 2100 PSI gauge at door open port port d Operate emergency hand pump very slowly until pressure on gauge stops increasing...

Page 362: ...UAL 1070 2 3 1 CYLINDER BODY 2 O RING 3 PISTON 4 O RING 5 GLAND 6 O RING 7 LOCKNUT GLAND 8 STOP 9 LOCKNUT 10 LOCK 11 LOCKNUT 12 LOCK 13 ROD END Figure 6 29 Gear Actuating Cylinder Ozone Reissued 10 12...

Page 363: ...y into the cylinder and with spanner wrench turn the packing gland into the cylinder to a snug fit Install gland locknut 7 and safety to the cylinder with MS20995C32 lock wire f Turn the stop 8 of the...

Page 364: ...CAP 7 GT RING 8 SCRAPER 9 STOP 10 NUT 11 NUT SELF LOCKING 12 RODEND 13 KEY 14 WIRE SAFETY 15 KEY 16 WIRE SAFETY Revised 10 12 83 PIPER NAVAJO SERVICE MANUAL 1 1 16 2 3 I I 4 5 6 10 13D 11 15 12 Figure...

Page 365: ...tighten nut 11 to a torque of 85 inch pounds 6 135 INSTALLATION OF GEAR ACTUATING CYLINDER Same as Paragraph 6 129 6 136 GEAR DOOR ACTUATING CYLINDERS OZONE 6 137 REMOVAL OF GEAR DOOR ACTUATING CYLIND...

Page 366: ...9 O RING 10 RACE 15 11 WASHER 14 12 BALLS 6 13 13 NUT KNURLED 14 O RING 12 15 BACKUP RING 18 16 NAMEPLATE 21 17 BARREL 18 PLUNGER 19 O RING 22 20 BACKUP RING 21 SPRING 22 CLEVIS END 23 SAFETY WIRE Fig...

Page 367: ...c With knurled nuts 13 on the barrel 17 install rings 14 and back up rings 15 in grooves on barrel d Install O ring 9 and back up rings 8 in groove on piston 7 and install balls 12 in holes of piston...

Page 368: ...linder e Repair of most parts of the landing geardoor actuator assemblyis impractical Replacedefective parts with new parts Minor scratches and scores may be removedby polishingwith fine abrasive croc...

Page 369: ...RING 4 END CAP 5 SAFETYWIRE 6 PISTON 7 BALL 6 8 GT RING 9 O RING 10 BACKUP 11 NUT 12 BARREL 13 NUT 14 BACKUP 15 O RING 16 RACE 17 O RING 18 BACKUP 19 PLUNGER 20 SPRING 21 SAFETY WIRE 22 CLEVIS END Fig...

Page 370: ...ith Filling HydraulicReservoir SectionII NOTE Where straight thread type fittingsare used the locknuts are to be tightened so that the O ring seals are on the non threaded portion of the fitting 6 150...

Page 371: ...n 6 155 PROCEDURE AFTER ENGINE DRIVEN HYDRAULICPUMP FAILURE Should a pump breakage occur there may be metal particles in the hydraulic system To rectify this condition the hydraulicsystemshould be flu...

Page 372: ...e rear side by rocking it from side to side and sliding it from the four dowels 11 In case of sticking tap gently with a plastic or rubber hammer f Remove the four studs 14 from the rear side Remove a...

Page 373: ...G 5 SEAL WITH GARTER SPRING 6 GASKET 7 DRIVE SIDE ASSEMBLY 8 LOCKNUT 9 O RING 10 CENTER PLATE ASSEMBLY 11 DOWELS 4 12 SCREW SQC HD CAP 13 REAR SIDE ASSEMBLY 14 STUD 15 O RING 16 DRIVE PIN 17 SECONDARY...

Page 374: ...emove more than 0 0001 total of metal from both sides Lap the surface to remove any scratches If deep scratches are present replace part If deep scratches are present re place secondary shaft Secondar...

Page 375: ...ot within the stated limits 6 159 ASSEMBLY OF HYDRAULIC PUMP Refer to Figure 6 34 The seal and seal rings should be soaked in the hydraulic MIL H 5606 fluid for two hours minimum time before installat...

Page 376: ...revent the lossof fluid prior to the hookup of the hydraulic lines c Holding both lines at a levelhigher than the pump pour hydraulic fluid MIL H 5606 into the lines d Remove one cap at a time from th...

Page 377: ...ime to close again select the gear down position and hold the handle down for an additional 3 to 4 seconds This allows completion of the door closing cycle During gear retraction if the selector retur...

Page 378: ...anding gear system fails to operate Selector lever disconnected Connect lever Adjust lever Adjust lever Refer to paragraph 6 162 Then fill the power pack with hydraulic fluid Refer to paragraph 6 162...

Page 379: ...DRAULIC SYSTEM cont Trouble Cause Remedy Gear operates abnormally slow or partially cont Priority valve out of adjustment or leaking Slow leak in main relief valve Engine pump Check valveopera tion pe...

Page 380: ...s to door open and the doors may be opened with out selecting gear up or down Micro switch on power pack out of adjustment Check for loose wire or mounting or bent bracket Doors come open in flight NO...

Page 381: ...e Remedy Doors fail to close cont Cannon plug on power pack loose Tighten Solenoid valve stuck in door open position Circuit breaker out Check wiring to solenoid valve Check breaker Note without elec...

Page 382: ...Gear Door Assembly 2E24 7 15 Installation of Nose Gear Door Assembly 2E24 7 16 Adjustment of Nose Gear Door 2E24 7 17 Main Landing Gear System 2F3 7 18 Disassembly of Main Gear Oleo 2F3 7 19 Cleaning...

Page 383: ...a Repair of Nose and Main Wheel Assemblies 2G2 747 Brake System 2G3 7 48 Wheel Brake Assembly 2G3 7 49 Brake Adjustment and Lining Tolerances 2G6 7 50 Removal and Disassembly of Wheel Brake Assembly 2...

Page 384: ...e gear is up and locked The red light willalsoshowan indication wheneverthe in board gear doors are not completelyclosed When powerfromeitheror both enginesis reducedbelow10to 12inchesof manifoldpress...

Page 385: ...12 e To remove the complete cylinder and fork assembly from the oleo housing 16 on later models cut safety wire 1 and remove bolt 2 washer 3 nut 4 washer 5 spring 6 and sleeve 18 and special washers...

Page 386: ...24 BOLT ASSEMBLY 32 25 TORQUE LINK UPPER 26 TUBE PISTON 33 27 SHIMMY DAMPENER SEE NOTE 28 BOLT ASSEMBLY 29 BOLT ASSEMBLY 30 BOLTS AND SAFETY WIRE 31 BRACKET 32 BUSHING 33 STUD DOOR UPLOCK 34 PLACARD S...

Page 387: ...42 40 39 38 10 11 35 13 12 PIPER NAVAJO SERVICE MANUAL 1074 A C 15 16 17 3 14 26 2 47 48 19 Figure 7 1 Nose Gear Oleo Strut Assembly cont Reissued 10 12 79 2E9 LANDING GEAR AND BRAKE SYSTEM...

Page 388: ...SPRING 7 SPECIAL WASHERS 2 REQ 8 ARM STEERING 9 STOP ASSY STEERING ARM 10 SAFETYWIRE 11 BOLT CAP TORQUE30 33 IN LBS 12 PLATEASSEMBLY 13 BRACKETGUIDE 14 RING RETAINER 15 CLAMP LANDING LIGHT 16 VALVE AI...

Page 389: ...bushings for excess wear corrosion scratches and overall damage 2 Retaining pins for wear and damage 3 Lock rings for cracks burrs etc 4 Cylinder and orifice tube for corrosion scratches nicks and ex...

Page 390: ...of the oleo housing install on the cylinder the aligner guide bracket 40 and steering arm 42 Torque cap bolts 37 30 35 in lbs and safety with MS2 995C40wire 44 k At the top of the oleo housing on LAT...

Page 391: ...ket hole the threaded end of the bolt can continue out of the link 4 Remove the idler link 24 g The uplock rod or cable 18 may be removed by removing the nut 20 from the actuating cylinder support bol...

Page 392: ...or all drag links d The shimmy dampener requires no service other than routine inspection In case of damage or malfunction the dampener should be replaced rather than repaired e Repair to the landing...

Page 393: ...rod end 33 to the link 24 Do not connect retraction rod 36 to link 39 until gear adjustment has been completed 4 The downlock spring 22 may be attached after gear check and adjustment has been comple...

Page 394: ...2E16 INTENTIONALLY LEFT BLANK...

Page 395: ...NK 31 SWITCH DOWN LIMIT 32 SPRING DOORACTUATOR 33 ROD END CYLINDER 34 ROD END RETRACTIONROD 35 NUT LOCK 36 RETRACTIONROD 37 DRAG LINK UPPERLEFT D OR 38 PLATE ATTACHMENT 39 DRAG LINK UPPERRIGHT 40 ROD...

Page 396: ...SEE NOTE PIPER NAVAJO SERVICE MANUAL 1076 25 207 SKETCHA SKETCH B Revised 11 15 82 Figure 7 2 Nose Landing Gear Installation cont 2E18 LANDING GEAR AND BRAKE SYSTEM 2E18...

Page 397: ...reely inserted Remove bolt turn rod end out one half turn and install bolt and secure NOTE Actuator cylinder attaching bolt must remain in the bottom of the attachment fitting slots during this adjust...

Page 398: ...Connect landinggear doorsand ascertaindoors are properly adjusted CAUTION Ascertain that all rod ends have sufficient thread engagementby inserting a wirein the check hole of the rod 7 12 ALIGNMENTOF...

Page 399: ...ch the fabricated nose wheel jig to the front of the nose wheel at the axle and extend and attach a plumb bob from a point that is approximately 20 inches forward along the bottom center row of rivets...

Page 400: ...AL NEUTRAL TOFWD 3 87 IN NEUTRAL TOREAR3 63 IN Figure 7 3 Clamping Rudder Pedals in Neutral Position Figure 7 4 RudderPedals Neutral Angle RIGGING TOOL SEEFIGURE 7 20 Figure 7 5 Aligning Nose Gear Rev...

Page 401: ...g O ring on piston rod assembly coat with Dow Corning Molykote 55M After coat ing install O ring on piston between the two single turn backup rings A thin coating of Dow Coming Molykote can also be ap...

Page 402: ...the retraction mechanism on its support shaft Pull the retraction mechanism from the shaft 7 14 CLEANING INSPECTION AND REPAIR OF NOSE GEAR DOOR ASSEMBLY a Clean all parts with a suitable cleaning sol...

Page 403: ...GREASE FITTING 36 19 VALVE AIR 20 PLUG FILLER 21 HOUSING OLEO 38 22 TUBE PISTON 23 BOLT ASSEMBLY 24 FORK 25 PIN COTTER 26 NUT AXLE 27 BOLT ASSEMBLY 28 PIN COTTER 29 BOLT ASSEMBLY 30 BEARING UPLOCK 31...

Page 404: ...1080 21 3 13 14 15 5 i Figure 7 6 Main Gear Oleo Strut Assembly cont Reissued 10 12 79 LANDING GEAR AND BRAKE SYSTEM PIPER NAVAJO SERVICE MANUAL 2F2...

Page 405: ...the orifice tube 4 from the oleo housing cut safety wire 39 and remove cap bolt 1 and washer 2 from top of the housing i The orifice plate 5 is removed from the orifice tube by releasing the retainer...

Page 406: ...t refer to Paragraph 7 25 and gear operation 7 21 REMOVAL OF MAIN LANDING GEAR Refer to Figure 7 7 a Place the airplane on jacks Refer to Jacking Section II b Remove the two access plates forward and...

Page 407: ...ng the rod or cable end at the lock crank i The landing gear and upper drag link attachment plates may be removed by reaching through the access holes to the nuts that secure the plates While holding...

Page 408: ...n so the hook willrotate freely yet without sideplay c Attach the uplock cable or rod 14 withthe properend attached tothe hook I andtheotherend to the crank fitting 21 d To install the main gearhousin...

Page 409: ...HMENT SHAFT FITTING SHAFT FITTING GREASE SIDE BRACE UPPERFWD SWITCH DOWNLOCK BRACKET SWITCH HOOK DOWNLOCK SIDE BRACE LOWER SIDE BRACE UPPERAFT PLATE MOUNTING BOLTASSEMBLY VALVE ASSEMBLY HOUSING GEAR 4...

Page 410: ...ND FLANGETO CONTACT SIDE OF FORK SEE NOTE2 TORQUE80 100 IN LBS 35 NOTES 1 GEAR DOWN AND LOCKED 2 ANTI ROTATIONCLIPSTO BE USED WITH CABLES ONLY 063 TO 156 OVER CENTER SKETCH B Figure 7 7 Main Landing G...

Page 411: ...to the downlock hook and the other end to the upper drag link arm at the same time attaching the landing gear actuating cylinder 15 also install anti rotation clip See Sketch B of Figure 7 7 i Lubrica...

Page 412: ...should not exceed 020 of an inch If clearancebetween stops exceed 020 and pin is not worn and the link through travelis withinlimits then hook must be replaced f If hook willnot clearpin file inside s...

Page 413: ...piston with hydraulic pressure It may require several adjustmentsto attain this dimension because of deflection in the linkage CAUTION When installing fork bolt in actuator rod end besure that the fo...

Page 414: ...ghtedge is the same distance from the forward side of the axle hubs Devisea support to hold the straightedgein position b Place a spacer block against the wheel rim at the hub line with the wideend to...

Page 415: ...To remove the outboard gear door disconnectthe retraction rods fromthe door and removethe hinge bolts b To removethe inboard gear door placethe airplaneon jacks andretract the gearenoughto allow the...

Page 416: ...take weightoff the gear c Release the airpressure from the strut by depressingthe valvecore pin until the pressure has diminished d Using snap ring pliers disengagethe snap ringfrom the annularslot in...

Page 417: ...operlyadjusted b Retract gear fully and ascertain that the uplockroller is engagedand restingon the uplock hook Nopressure on hydraulicsystem c Adjust the gear uplock switch toward the link until it a...

Page 418: ...N OPEN SHUTTLE VALVE SAFETY SWITCH TERM BLOCK NOTE AIRPLANE ON THE GROUND GEAR DOWN AND LOCKED THROTTLES BACK AND SWITCHES OFF LEFT THROTTLE SWITCHES RIGHT THROTTLE SWITCHES REFERTO CHAPTERXI FORELECT...

Page 419: ...ON GROUND THROTTLES CLOSED GEAR WARNING LIGHT ONSOLIDWITH GEARINMOTION GEAR WARNING LIGHT FLASHES WITH ONE ORMORETHROTTLES CLOSEDAND GEAR RETRACTED HORN BLOWS WITH BOTH THROTTLESCLOSEDAND GEAR RETRACT...

Page 420: ...ust the switch awayfrom the hook 7 34a ADJUSTMENT OF MAIN INBOARD GEAR DOOR AJAR SWITCHES a Ascertain that main inboard gear doors are adjusted properly b With the master switch off actuate the hand p...

Page 421: ...36 LANDINGGEARWARNINGSYSTEM 7 37 REMOVALOF GEAR WARNINGSWITCHES Refer to Figure 7 12 The gearwarningswitches are located within the control pedestal directly under the throttle controls Each switchwil...

Page 422: ...s that secure the frame 5 Pull the assembly from the pedestal housing 6 Remove the control keeper tube that holds the switch brackets in the control frame by removing the tube attachment screws from e...

Page 423: ...d above the desired in flight pressure Mark the throttle cover in some manner in relation to the throttle levers for the adjustment of the gear up warning horn switches 3 Shut down the engines 4 Set t...

Page 424: ...he wheel bearing assembliesmay be removedfrom each wheelhalf by first removingthe snap rings 10 that secure the greaseseal retainers and then the retainers 8 greaseseals 9 andbearingcones 7 The bearin...

Page 425: ...ter wheelhalf Install bolts through the inner wheel half and washersand nuts on the outer wheelhalf Torque wheelnuts per recommended torque value on name plate of wheel d Inflate tire to recommended o...

Page 426: ...disc if cracked or when disc is worn belowminimum thickness Refer to Figures 7 16 or 7 16b Ascertain that latest revisionof Piper Service Letter No 766 is compliedwith ifapplicable In addition also pe...

Page 427: ...RIGHT 4 MASTER CYLINDER LEFT 5 VALVE PARKING BRAKE 6 HANDLE PARKING BRAKE 7 LINK FUSELAGE 8 HOSE FLEXIBLE 9 LINK GEAR 10 BRAKE ASSEMBLY PIPERNAVAJO SERVICE MANUAL 1088 N Figure 7 15 Brake Installation...

Page 428: ...ssembly by installing the brake cylinderon the torque plate positioningthe spacer lining back plate and installing the bolts securingassembly If the brake line wasdisconnected reconnect the bleedbrake...

Page 429: ...r drift pin or suitable arbor press 2 Installation a To replace a new cup apply one coat of zinc chromate primer to wheel half bearing bore b Insert wheel half into boiling water for 15 minutes or pla...

Page 430: ...NGFIXTURE PRESS HOLDINGFIXTURE 212 PRESS ANCHORBOLT STEP A BOLT HOLDING FIXTURE CYLINDERBODY HOLDING FIXTURE STEP C STEP B CYLINDERBODY STEP D Figure 7 16a RemovalandInstallationof Anchor Bolts Reissu...

Page 431: ...12 NUT 13 CAP BLEEDER 14 SCREW BLEEDER 15 SEAT BLEEDER 16 BOLT ANCHOR 17 O RING 18 BRAKE DISC PIPER NAVAJO SERVICE MANUAL 271 TORQUETO 60 IN POUNDS 213 MEASURE 2 OR 3 POINTS TO GET AVERAGEDISC THICKN...

Page 432: ...rp tool between the lining and plate Press new lining on the backing plate 7 51 CLEANING INSPECTION AND REPAIR OF WHEEL BRAKE ASSEMBLY a Clean the assembly with dentured alcohol and dry thoroughly b I...

Page 433: ...er d Slide the pressure lining plate 6 onto the anchor bolts 16 of the housing e Slide the housing assembly on the torque plate 1 1 of the gear f Install the backing plates 10 and secure with self loc...

Page 434: ...e cylinder are limited to polishingout smallscratches burrs etc and replacingvalve washer seal and O rings 7 57 ASSEMBLYOF BRAKEMASTERCYLINDER Referto Figure7 17 a Install O ring 9 on the cylinder pis...

Page 435: ...ing 3 is held in place by the fittings Use caution not to loosen these when removing the fittings b From the valvebody remove the valve spring 3 and valve 4 c To remove the valve cam 13 remove the nut...

Page 436: ...brake system as describedbelow a Place a suitable container at the brake reservoirto collect fluid overflow b Remove the rubber bleeder fitting cap located on the bottom of the brake unit housing on...

Page 437: ...216 PIPER NAVAJOSERVICE MANUAL 217 FROM PRESSURE POT OVER FLOW CONTAINER Figure 7 19 Bleeding Brake THIS SPACE INTENTIONALLY LEFT BLANK Revised 1 29 82 LANDING GEARANDBRAKESYSTEM 2G11...

Page 438: ...1091 1090 3 4 PIPERNAVAJOSERVICEMANUAL 22 21 A 8 C 8 9 I 10 11 13 Figure 7 19a NoseGearWearLimits Reissued 10 12 79 LANDING GEAR AND BRAKESYSTEM 2G12...

Page 439: ...Link LugBolt Lower Drag Link Applies to both endsof link Bolt Drag Link Joint Bushing Upper Drag Link L R Both ends Bolt Drag Link Top L R Mfg Dimension 5625 0015 0000 5620 0000 0040 5625 0015 0000 43...

Page 440: ...rque Link Bolt Torque Link Joint Link Torque Bolt Torque Link Attachment Bushing Fork Torque Link Attachment Bushing Cylinder Torque Link Attachment Mfg Dimension 4375 0015 0000 2500 0015 0000 2490 00...

Page 441: ...rvice Limit 11 31780 Bearing Oleo Strut Lower 1 9375 1 9405 10 31799 Bearing Oleo Strut Upper 2 3730 0000 0020 Chrome Plate Worn Thru 2 3730 8 40275 Cylinder Assembly Cylinder Bore 2 3750 0030 0000 2...

Page 442: ...1093 15 A 19 OUTBD FWD PIPER NAVAJOSERVICEMANUAL 11 B 092 A B 2 3 6 7 8 13 14 0 12 Figure 7 19b Main Gear Wear Limits Reissued 10 12 79 2G16 LANDING GEAR AND BRAKE SYSTEM...

Page 443: ...Lug Bolt Side Brace Lug Bushing Side Brace Lower Link Applies to both ends of link Bolt Side Brace Joint Bushing L R Side Brace Link LowerEnd Mfg Dimension 6245 0015 0000 6240 0000 0040 6250 0015 000...

Page 444: ...Forward Side Brace Upper End Shaft Forward Side Brace Pivot Bushing Housing Torque Link Attachment Bolt Torque Link to Housing Mfg Dimension 5000 0015 0000 4990 0000 0040 5000 0015 0000 1 1250 0015 00...

Page 445: ...lt Torque Link to Fork Bearing Oleo Strut Bottom Bearing Oleo Strut Top Housing Assembly Cylinder Bore Mfg Dimension 3750 0015 0000 4375 0015 0000 4370 0000 0040 3740 0020 0000 3742 0000 0005 2 7500 0...

Page 446: ...2G20 INTENTIONALLY LEFT BLANK...

Page 447: ...ty switch Gear retracts or ex tends before the doors open Priority valve leaks in power pack Solenoid valve stuck in closed position Micro switch on power pack out of adjustment Check priority valve c...

Page 448: ...adjustment Not enough actuator stroke Nose gear fails to lock up when handle returns to neutral Check wiring to sole noid valve Adjust or replace Increase the actuator stroke Relieve door pinch by len...

Page 449: ...fold pressure Redindicatorlight stayson withgear upandlocked Throttle switchesare faulty Throttle switchesout of adjustment Doorscouldbeopen Switchdefective Replacesswitches Adjustthrottleswitches Adj...

Page 450: ...elbearings Replace boltsand or bushings Mainlandinggear shimmiesduring fast taxi take off and landing Tire out of balance Checkbalanceand re place tire if neces sary Wornor loosewheel bearings Worntor...

Page 451: ...tires cont Nose gear fails to steer properly Wheel out of alignment toe in or toe out Oleo cylinder binding in strut housing Check wheel alignment Lubricate strut hous ing One brake dragging Steering...

Page 452: ...EE ANGLE ON THETOOL PLATE 6 24 SCREWS AXLE A SCRIBE LINES AS SHOWN PIPERNAVAJO SERVICEMANUAL 1094 SPRING CASTER PA 23 SECTION A A 2 3 7 5 31 0 1 0 x 9 0 STRAP I 25 8 75 125R 22 0 Figure 7 20 Fabricate...

Page 453: ...1PLATE NOTE ITISIMPORTANT THAT CENTER LINE ACCURACY BEUSED WHEN LOCATING HOLES FOR INSTALLATION OFBUSHING SIGHT SLOT AND ELONGATED HOLE 24 71 SCRIBE SHOWN 1 75 25R SEENOTE 1 062 8755 3 50 50R 50R 125...

Page 454: ...1096 MATERIAL STEEL OR HARD ALUMINUM 1 0x 013x 13 251 TUBE 1 0 1 0 NOTE ITISIMPORTANT THAT CENTER LINE ACCURACY BEUSED WHEN LOCATING HOLES FOR INSTALLATION OF BUSHING SIGHT SLOT AND ELONGATED HOLE 18...

Page 455: ...OSERVICEMANUAL 218 TOP 11 56 MATERIAL HARDWOOD 1 10X 1 X 11 56 SIDE NOTE MARKLARGE END FORWARD Figure 7 23 Fabricated Tool Checking Main Gear Toe In Adjustment Reissued 10 12 79 2H5 LANDING GEAR AND B...

Page 456: ...8 17 Cleaning Inspection and Repair of Propeller 2H16 8 18 Installation of Propeller 2H16 8 19 Adjustment of Low Pitch Blade Angle and Stop 2H19 8 20 Blade Track 2H 19 8 21 Propeller Governor 2H21 8 2...

Page 457: ...ed and Mixture 8 47 Fuel Air Bleed Nozzle 8 48 Removal of Fuel Air Bleed Nozzle 8 49 Cleaning and Inspection of Fuel Air Bleed Nozzle 8 50 Installation of Fuel Air Bleed Nozzle 8 51 Ignition System Ma...

Page 458: ...Adjustment of Oil Pressure Relief Valve 8 72 Oil Screen 8 73 Oil Filter Element 8 74 Recommendations for Changing Oil 8 75 Spectrometric Oil Analysis Aerofiche Grid No 2J13 2J13 2J14 2J14 2J15 2J15 R...

Page 459: ...with their associated components Each system consists of a single contact magneto a dual contact magneto to obtain the retard spark necessary for starting a starter vibrator magneto switches and star...

Page 460: ...before assembling c Never reuse any lockwire lockwashers tablocks tabwashers or cotter pins All lockwire and cotter pins must fit snugly in holes drilled in studs and bolts for locking purposes Cotter...

Page 461: ...ND REPAIR a The cowling should be cleaned with a suitable solvent and then wiped with a clean cloth b Inspect the cowling for dents cracks loose rivets damaged or missing fasteners and damaged fibergl...

Page 462: ...m 15 d Disconnect the transmission 8 from its mounting bracket 7 and remove it from the engine nacelle e The torque tube 11 may be removed by disconnecting the two cowl flap control rods 12 from the t...

Page 463: ...rms and secure with rivets e Connect the electrical leads f Check adjustment of cowl flap per Paragraph 8 11 and position sender per 8 14 g Install access plates 8 11 RIGGING AND ADJUSTMENT OF COWL FL...

Page 464: ...Ascertain that there is approximately 4 75 inchesbetween the center of the pivot bolt 20 on the sender arm 19 and the rod hole in the torque tube arm by adjusting pivot bolt on the rod that connects t...

Page 465: ...following and the spinner on either prop must be removed WARNING Do not attempt to disassemble the propeller assembly any further than stated in this manual Only personnel at a certified repair shop...

Page 466: ...the slight freedom allowed by the pitch change mechanism If they appear tight and are properly lubricated the pitch change mechanism should be removed so that each blade can be checked individually If...

Page 467: ...EAD AFT 6 O RING 7 MOUNTING BOLT PROPELLER 8 SCREW SPINNERATTACHMENT 9 AIR VALVE 10 CAP AIR VALVE 11 LOW PITCHADJUSTMENT 12 PROPELLERDOME 13 BOLT BULKHEAD 14 SAFETYWIRE 15 BLADE PROPELLER 16 COUNTERWE...

Page 468: ...of all air pressure place the propeller CONTROL in the feather detent before measuring or releasing propeller air pressure This proce dure will insure the free flow of all air within the prop dome and...

Page 469: ...ropeller cylinder Rotating the screw clockwise increases the low pitch and reduces the static RPM by about 100 RPM for each half turn or vice verse CAUTION Before adjusting the low pitch stop screw th...

Page 470: ...Engine Static Low RPM Description Spinner Bulkhead Aft Propeller Mounting Bolts Spinner Bulkhead Check Nut Spinner Attachment Screws 2575 RPM Max 1900 50 RPM Min Required Torque Dry 22 foot pounds 60...

Page 471: ...GOVERNOR a Clean the mounting pad thoroughly makingverycertain that there areno foreignparticlesin the recessaround the driveshaft b Place the governormounting gasket in positionwith the raisedportion...

Page 472: ...l arm loosen the cableend jam nut and rotate the end to obtain the desiredlever clearance Reconnect the cableend and tightenjam nut e It is usually only necessary to adjust the highRPMsettingof the go...

Page 473: ...the firewall s Remove the engine mount mounting bolts and swing the engine a few inches from the firewall Check the engine for any attachments remaining to obstruct its removal t Swing the engine cle...

Page 474: ...the arrangementof the shock mount assemblies The top shocks are assembledso the silvercolored shocks are aft and the goldcolored shocksare forward The lower shock mounts areinstalledopposite of the t...

Page 475: ...AKE PRESSUREPUMP Figure 8 6 PIPER NAVAJOSERVICE MANUAL 4 1100 NOTE Torque nuts on AN6 41 A bolts attaching the engine mount to the firewall 13 to 16 foot pounds 11 SEESKETCH A 14 18 21 EXHAUST STACK E...

Page 476: ...PIPER NAVAJO SERVICE MANUAL 1101 1099 38 SKETCHA SKETCHB Figure 8 6 Engine Installation cont Revised 11 15 82 POWER PLANT 212...

Page 477: ...roubleshooting Table in this section and seek out the possible cause Do not break the clamp seal joining the turbine and compressor units 8 30a TURBOCHARGER NOMENCLATURE Many unfamiliar terms may appe...

Page 478: ...h changes oil pressure to the wastegate piston Differential Pressure Controller Ground Boosted or Ground Turbocharged Deck Pressure Manifold Pressure Normalizing This controller uses a diaphragm rathe...

Page 479: ...ecalled a boot strap system and if no losses wereencountered it would theoretically run continuously It would also be very unstable because if for some reason the turbo speed would change the compress...

Page 480: ...Disconnect and remove the left exhaust stack extension by disconnecting it from the exhaust stack and the bracket that is attached to the turbo mounting bracket Slide the extension from the exhaust p...

Page 481: ...he exhaust stack A gasket is installed between the exhaust stack and its extension 3 Secure the brackets that lead from the mounting bracket to the right and left exhaust extensions 8960 EXHAUST MANIF...

Page 482: ...INSTALL CLAMP SO O ON CLAMP FACESAWAY FROM BODY OF TURBO CHARGER 15 16 6 TAIL PIPE TURBINE OUTLET 7 EXHAUST COUPLING V BAND 8 EXHAUST PIPE LEFTREAR FROM CYL TO TURBO INLE 9 EXHAUST TRANSITIONASSY 10 C...

Page 483: ...his position and proceed to install couplings around flange and engage latch Tighten coupling nut to 50 inch pounds initial torque Tap outer periphery of coupling with mallet to distribute band tensio...

Page 484: ...co Lycoming Service Instruction No 1187 8 33a DENSITY CONTROLLER 8 33b REMOVAL OF DENSITY CONTROLLER a Remove engine cowling Refer to Paragraph 8 4 b Disconnect oil lines at controller unit c Remove t...

Page 485: ...and outlet oil lines to the controller 8 33j EXHAUST WASTEGATE ASSEMBLY 8 33k REMOVAL OF EXHAUST WASTEGATE ASSEMBLY a Remove engine cowling Refer to Paragraph 8 5 b Disconnect oil lines and drain lin...

Page 486: ...the filter plenum by removing the screws on the outside of the plenum and then remove the brackets from the inside of the plenum c Remove the filter 8 36 SERVICE INSTRUCTIONS After properly determini...

Page 487: ...er and the turbocharger compressor inlet is to provide a source of air should there be an air stoppage through the filter system The following should be checked during inspection a All door seals are...

Page 488: ...in such a manner that it can work into the throttle shaft bushings 8 42 REMOVAL OF FUEL INJECTOR a Remove the lower cowl panel as described in paragraph 8 4 b Disconnect the throttle and mixture cont...

Page 489: ...exercised when handling or working around the injector to prevent oil or fuel from entering the air sections of the injector As explained previously damage to the air diaphragm will result Fluid can...

Page 490: ...ture control arm contacts its stop d Reconnect the cable end to its control arm and secure jam nut e Pull the throttle and mixture control lever in the cockpit full aft to ascertain that the injector...

Page 491: ...heck this new position by repeating the above procedure Make additional adjustments as necessary Each time the adjustment is changed the engine should be run up to 2000 RPM to clear the engine before...

Page 492: ...ming Service Instruction No 1275 8 49 CLEANING AND INSPECTION OF FUEL AIR BLEED NOZZLE a Clean the nozzle with acetone or equivalent and blow out all foreign particles Do not use wire or other hard ob...

Page 493: ...end the suspected unit to the overhaul shop for test and repair d Should this not be possible a visual inspection may disclose the source of trouble Remove the harness outlet plate from the magneto In...

Page 494: ...r If fingers are not moistened with oil re oil using 2 or 3 drops of Bendix 10 391200lubricant Allow approximately30 minutes for felt to absorb the oil Blot off the excess with a clean cloth Toomuch o...

Page 495: ...installing it last minimizes the danger of starting the engine accidentally when the ground lead is removed from the magneto b Disconnect the ground lead and the retard spark lead on the left magneto...

Page 496: ...t open This adjustment shall be made by rotating cam in opposite direction of rotation a few degrees beyond point where contacts close Then rotate cam in normal direction of rotation until contacts ju...

Page 497: ...adjust contact assembly and recheck to be sure that points will open within retard degree tolerance Remove the 11 8150 1 Tim ing Kit and two studs from the magneto d If the distributor block was not r...

Page 498: ...large distributor gear teeth Rock distributorgearback and forth slight ly There must be perceptible backlash between teeth of large and small gears This check should be made at three different points...

Page 499: ...tight d Fasten ground wire of electric timing light to any unpainted portion of the engine and one of the positive wires of the timing light to a suitable terminal con nected to the ground terminal o...

Page 500: ...other suitable low voltage device check each lead for continuity If continuity does not exist wire is broken and must be replaced c For electrical test of harness assembly use a high voltage direct cu...

Page 501: ...follows a Fabricate a tool as shown in Figure 8 18for instal Figure 8 17 Removing Spring From ling the insulating sleeves Lead Assembly over cable terminals b Push the tool thru insulating sleeve and...

Page 502: ...igure 8 18 Assembly Tool C346 SPRINGRETAINERASSY Figure 8 19 Using Assembly Tool C346 REQUIREDLENGTH Figure 8 20 Measuring Lead Assembly Length ties from assembly and discard 2 Cut off condemned lead...

Page 503: ...lic Braid From End of Lead Figure 8 22 Unbraiding Metallic Shielding b To the length determined in step a add 1 3 4 inches NOTE Spare part leads are supplied in various lengths Use a lead which is lon...

Page 504: ...strands to facilitate insertion of lead end thru hole in cable out let plate 10 Remove cable outlet plate from magneto Support plate securely and using suitable cutting pliers split and remove eyelet...

Page 505: ...pped end of wire Refer to Figure 8 27 Slide grommet down needle until it seats tightly against the tapered ferrule 232 A 0 50 0 50 232 11 7073 NEEDLE Figure 8 26 Measuring Wire From Figure 8 27 Instal...

Page 506: ...Spray or equivalent This will prevent harness grommet from sticking to magneto distributor block a Place the harness terminal plate on the magneto and tighten nuts around the plate alternately to sea...

Page 507: ...PIPER NAVAJO SERVICE MANUAL 1103 Figure 8 30 Ignition System Schematic PA 31 Turbo Reissued 10 12 79 POWER PLANT 2J9...

Page 508: ...ug from the engine In the course of engine operation carbon and other combustion products will be deposited on the end of the spark plug and will penetrate the lower threads to some degree As a result...

Page 509: ...on dioxide is applied will aid in the removal of an excessively seized plug e Do not allow foreign objects to enter the spark plug hole 8 64 INSPECTION AND CLEANING OF SPARK PLUG a Visually inspect ea...

Page 510: ...possibility of hazardous conditions b Rotate engine crankshaft until number one cylinder is in its retard firing position Using the timing light check to see that both magneto contact assem blies are...

Page 511: ...e electrical lead from the vibrator d Remove the vibrator from the bulkhead byremovingthe attachment screws 8 69 INSTALLATION OF STARTING VIBRATOR a Position the vibrator on the bulkhead and secure wi...

Page 512: ...tion this is accomplished by removing the lockwire from the bolt head at the end of the filter housing loosening the bolt and removingthe filter assembly from the adapter b Before discarding the filte...

Page 513: ...il change 3 Check all oil screens for evidence of sludge or plugging Change oil every ten hours if sludge conditions are evident Resume normal oil drain periods after sludge conditions improve 8 75 SP...

Page 514: ...rty lines strainers or fuel valves Open throttle and unload engine by engaging starter Mixture in Idle Cut Off Increase prime insure that primer is not leaking Open throttle to one fourth of its range...

Page 515: ...ll connections in the induction system Replace any parts that are defective Adjust throttle stop to obtain correct idle Check condition of piston rings and valve seats Check entire ignition system Adj...

Page 516: ...l power Leak in the induction system Tighten all connections and replace defective parts Throttle lever out of adjustment Improper fuel flow Restriction in air scoop Improper fuel Faulty ignition Brok...

Page 517: ...accessory housing and time correctly Remove inspect thoroughly and replace if necessary NOTE If broken baffles are free to move around in muffler engine may function properly sometimes although at ot...

Page 518: ...ompletely and suck open door is properly adjusted and gasket is not damaged Density controller does not follow course to altitude Oil line to actuator inlet kinked or blocked Differential controller p...

Page 519: ...ontroller Insufficient oil pressure to close wastegate Damage to compressor or turbine wheel Leaks in exhaust system Poor combustion Adjust for full travel If butter fly is sticking work free and appl...

Page 520: ...essure relief seat damaged or cocked Pressure relief out of adjustment Inadvertant relocation of oil pressure takeoff point on engine Oil pressure improperly adjusted Improper weight of oil Remove and...

Page 521: ...specified oil Improper grade of oil Replace with oil conforming to specifications Clogged oil lines strainers Remove and clean oil strainers or cooler lines and cooler Excessive blow by Usually caused...

Page 522: ...sion of Lycoming S I 1042 for approved spark plugs Cooling baffles missing broken or improperly installed Partially plugged fuel nozzles Improper I D of fuel lines being used Engine improperly timed E...

Page 523: ...t build up in com pressor or on compressor wheel Leak in engine intake or exhaust Rotating assembly bearing seizure Restriction in oil lines from actuator to wastegate controller or from engine to act...

Page 524: ...linder and replace packing Check pump outlet pressure oil filters and external lines for leaks or obstructions Replace controller Remove actuator and clean jet If there is oil leakage at actuator drai...

Page 525: ...ll closed position Usually accompanied by oil leakage at actuator drain line NOTE Wastegate normally closed in idle and low power conditions Should open when actuator inlet line is dis connected Shut...

Page 526: ...pen Clean drain passages It is sometimes necessary to over haul or replace turbo Increase engine idle speed to a maximum of 700 RPM if turbo still smokes it must be overhauled or replaced Remove and r...

Page 527: ...o charger Repair leaks Replace controller NOTE When it has been determined that a controller is malfunctioning it should be removed and replaced The old unit should be sent to ap proved facilities for...

Page 528: ...2K6 INTENTIONALLY LEFT BLANK...

Page 529: ...2K7 INTENTIONALLY LEFT BLANK...

Page 530: ...ne 8A 10 Removal of Engine 8A 11 Installation of Engine Engine Shock Mounts Induction System Air Filter Fuel Injector Fuel Air Bleed Nozzle 8A 16 Removal of Fuel Air Bleed Nozzle 8A 17 Cleaning and In...

Page 531: ...trolled by a governor mounted on the engine supplying oil through thepropeller shaft at var ious pressures Oil pressure from the governor moves the blades into low pitch high RPM The centrifugal twist...

Page 532: ...oil pressurefilter The oil pressure filter element located on the accessoryhousing is providedasa means to filter from the oil any solid particles that mayhavepassed throughthe suction screenin the s...

Page 533: ...bserve engine RPM which should be 2700 RPM with high RPM properly adjusted c Should engine RPM not be as required the high RPM setting should be adjusted as follows 1 Shut down the engine and remove t...

Page 534: ...ositive high pitch setting 8A 9 ENGINE 8A 10 REMOVAL OF ENGINE Refer to Figure 8A 2 The removal of either engine is basically the same procedure though the routing of some wires cables lines etc do va...

Page 535: ...L FILLER 7 SPARK PLUG 8 ENGINE MOUNT ASSEMBLY 9 BREATHER ENGINE 10 SHOCK MOUNT 11 PUMP PRESSURE 12 FILTER OIL 13 MAGNETO RIGHT 14 HEAT MUFF 15 TAIL PIPE 16 INDUCTION AIR INTAKETUBE 17 EXHAUST STACK EX...

Page 536: ...re wall Also remove the tailpipe hanger at the fire wall q Attach a one half ton minimum hoist to the hoistinghooks andrelievethe tension on the enginemount r Remove the nuts and washersfrom the bolts...

Page 537: ...e left aft engine baffle and attach the cable end to the starter Secure cable with clamps at the engine mount and the engine o Ascertain that the magneto switches are off and install the propeller per...

Page 538: ...g Service Instruction No 1275 8A 18 INSTALLATION OF FUEL AIR BLEED NOZZLE a It is important for the nozzles to be correctly positioned with the air bleed hole upward b Install the nozzles and tighten...

Page 539: ...fer to Ignition System Maintenance Section VIII 8A 20 SPARK PLUGS Refer to Spark Plugs Section VIII 8A 21 STARTING VIBRATOR Refer to Starting Vibrator Section VIII 8A 22 LUBRICATION SYSTEM Refer to Lu...

Page 540: ...l Injector 2K24 8B 15 Fuel Air Bleed Nozzle 2K24 8B 16 Ignition System Maintenance 2K24 8B 17 Magneto 2K24 8B 18 Description and Principle of Operation 2L1 8B 19 Inspection of Magneto 2L1 8B 20 Magnet...

Page 541: ...vernor moves the propeller blades into low pitch high RPM The centrifugal twisting moment of the blade also tends to move the blades in low pitch Opposing these two forces are blade counterweights and...

Page 542: ...vided to pass the oil directly from the oil pump to the oil pressure filter The oil filter element located on the accessory housing provides a means of filtering from the oil any solid particles that...

Page 543: ...d reinstall drain plug f Remove the propeller per Removal of Propeller Section VIII g Disconnect the starter cable at the starter remove the cable clamps at the left side of the engine and engine moun...

Page 544: ...lic pressure line at the hydraulic oil filter on the fire wall e Connect the throttle and mixture control cables to the injector install cable clamps and rig per Adjustment of Throttle and Mixture Con...

Page 545: ...LTER OIL 11 EXHAUST STACK EXTENSION R 12 TURBINEASSEMBLY 13 COMPRESSOR ASSEMBLY 14 AIR DUCT COMPRESSOR INLET 15 EXHAUST TAIL PIPE UPPER 16 VALVE BYPASS 17 TAIL PIPE BOTTOM 18 EXHAUST PLENUM 19 HOSE IN...

Page 546: ...uct opening b Actuate the door to determine that it is not sticking or binding c A minimum of a 9 pound force is required to open the door against the magnetic force The 9 pound force is to be applied...

Page 547: ...battery current to the primary coilof the magneto The pulsating DC current is then stepped up by transformer action producing a shower of sparks at the plugs for improved starting When the engine fir...

Page 548: ...the contact points for excessivewear or burning Figure 8B 3 showshow the averagecontact point willlook when surfacesare separatedfor inspection CAUTION Do not open point contacts more than 0625 of an...

Page 549: ...ess spark plug ends to the spark plugs until all magneto to engine timing procedures and magneto to switch connections are entirely completed NOTE The use of a timing light unit Part No 11 9110 will s...

Page 550: ...ER NAVAJOSERVICE MANUAL 228 RIGHT ENGINE LEFT ENGINE Figure 8B4 Engine Timing Marks P N 10 382698 BENDIX SWITCH LEADTERMINAL KIT Figure 8B 5 Timing Light Connected to Magneto Revised 11 15 82 POWERPLA...

Page 551: ...PIPER NAVAJO SERVICE MANUAL 238 RETARD ANGLES E GAPANGLES 239 Figure 8B 6 Timing Marks on Magneto Rotor Figure 8B 7 Painted Tooth Centered in Timing Window Reissued 10 12 79 POWER PLANT 2L5...

Page 552: ...e painted tooth of the large distributor gear is centered in the timing hole Observe that at this time the built in pointer just ahead of the rotor viewing window aligns with the R or L mark on the ro...

Page 553: ...ng Mark on Rotor Aligned with Pointer Right Hand Rotation 241 Figure 8B 9 Timing Light Connected to Magneto 242 Figure 8B 10 Timing Light Connected to Magneto and Breakers Figure 8B 11 Checking Harnes...

Page 554: ...y in number one cylinder firing position as indicated by the engine timing mark depending on extent of play in gear train e Remove the timing light lead from the main breaker terminal Attach the red l...

Page 555: ...ack test lead to contact spring and red lead to eyelet of the same lead Refer to Figure 8B 11 2 Observe that the continuity lamp illuminates f Test insulation resistance of each harness lead by using...

Page 556: ...tach nut finger tight to ferrule 3 Push the fabricated tool through insulating sleeve and spring retainer assembly as shown in Figure 8B 16 Screw the cable terminal into the tool 4 Work insulating sle...

Page 557: ...ANUAL 244 CUT NOTCH TO FIT SNUG ON NO 58 DRILL WITH JAWS CLOSED Figure 8B 12 Checking Harness Lead Insulation Resistance Figure 8B 13 Modified Pliers Figure 8B 14 Removing Spring From Lead Assembly Re...

Page 558: ...346 DRILL NO 47 IN DEEP TAP 3 48 BLENDO D TO I D POLISH O D 12 000 IN MAT NO 30 DRILL RODOREQUIVALENT Figure 8B 15 Assembly Tool C346 SPRINGRETAINERASSY SLEEVE Figure 8B 16 Using Assembly Tool Reissue...

Page 559: ...pray on spark plug terminal insulating sleeve refer to Figure 8B 21 to prevent heat from sticking sleeve to spark plug barrel Lightly lubricate the shoulder of ferrule to minimize twisting of ferrule...

Page 560: ...le Positioned Under Braid Figure 8B 18 Ferrule Seating Tool 11 7074 C473 C 11 8625 PLUNGER ASSEMBLY 11 8626 SPRING INSERTION GUIDE DISTRIBUTOR BLOCK DISTRIBUTOR BLOCK Figure 8B 19 Position of 11 8627...

Page 561: ...RVICE MANUAL C467 C467 USE FLOURCARBON SPRAY USE GO JO NO LOK LUBRICATE Figure 8B 22 Lubricating Ferrule Shoulder TABLE VIIIB II COUPLINGTORQUES Spark Plug Coupling Threads 5 8 24 3 4 20 Torque Lb In...

Page 562: ...the starter be electrically removed from the circuit before the vibrator is put into operation to eliminate possibility of starter being energized during the test d Place the magneto switch in its ON...

Page 563: ...1106 2 4 FIRINGORDER TIO 540 F2BD 1 4 5 2 3 6 LTIO 540 F2BD 1 6 3 2 54 Figure 8B 23 Ignition System Schematic PA 31 325 Reissued 10 12 79 POWER PLANT 2L17 PIPER NAVAJO SERVICE MANUAL...

Page 564: ...tation c Disconnect the electrical lead from the vibrator d Remove the vibrator from the bulkhead by removing the attachment screws 8B 29 INSTALLATION OF STARTING VIBRATOR a Position the vibrator on t...

Page 565: ...ancetimingof ignition If voltageis adequate listen for buzzingof vibrator duringstarter If no buzzingis heard either the vibrator is defectiveor the cir cuit from the Out put terminalon the vibrator t...

Page 566: ...from groundenergizevibrator by activatingthe starter switch Pluglead should throw a 19 of an inch spark If spark is weak or missingtry newvi brator If this does not correct trouble check magnetofor i...

Page 567: ...eto contact assemblies for burning or dirt Main and Retard ac cording to paragraph 8B 19 Check distributor timing according to paragraph 8B 19 d Magneto check out of limits Defective spark plugs Check...

Page 568: ...2L22 THRU 2L24 INTENTIONALLY LEFT BLANK...

Page 569: ...PIPER AIRPLANE SERVICE MANUAL CARD 3OF5 PA 31 PA 31 300 PA 31 325 PIPER AIRCRAFT CORPORATION PART NUMBER 753704 3A1...

Page 570: ...h changes and additions to existing text and illustrations Changes in capitalization spelling punctuation indexing physical location of material or complete page additions are not identified by revisi...

Page 571: ...NO 2 VI HYDRAULIC SYSTEM 2A9 VII LANDING GEAR AND BRAKE SYSTEM 2E4 VIII POWERPLANT PA 31 Turbo 2H6 VIIIA POWERPLANT PA 31 300 2K8 VIIIB POWERPLANT PA 31 325 2K18 AEROFICHE CARD NO 3 IX FUELSYSTEM 3A8...

Page 572: ...eed Valve 9 11 Fuel Filter 9 12 Electric Fuel Pump PA 31 310 and 325 9 12a Electric Fuel Pump PA 31 300 9 13 Fuel Cell Tie Detail 9 14 Low Fuel Warning Sender Sealing 10 1 Instrument Panel Typical 10...

Page 573: ...A X II X III Aerofiche Grid No Fuel Quantity Sender Resistance Limits Wear Limits for Electric Fuel Pump Troubleshooting Chart Fuel System Deleted Deleted Troubleshooting Chart Instruments Troubleshoo...

Page 574: ...3A6 INTENTIONALLY LEFT BLANK...

Page 575: ...3A7 INTENTIONALLY LEFT BLANK 0...

Page 576: ...Patch Air Cure Method 3B9 9 13c Metal Fitting Sealing Surfaces 3B9 9 13d Accessory Replacement 3B9 9 13e Defect Repairs of Fuel Cell 3B10 9 14 Testing Fuel Cells 3B10 9 14a Locking Fuel Cap Optional...

Page 577: ...ation of Electric Fuel Pump 3C5 9 48 Electric Fuel Pump PA 31 300 3C5 9 49 Removal of Electric Fuel Pump 3C5 9 50 Disassembly of Electric Fuel Pump 3C5 9 51 Cleaning Inspection and Repair 3C7 9 52 Ass...

Page 578: ...panel that is located between the underside of each wing and the fuselage The cross feed is located on the left panel aftof the filter bowl access door The fuel valves are operated through controls l...

Page 579: ...PIPER NAVAJO SERVICE MANUAL Figure 9 1 Fuel System Schematic PA 31 310 Reissued 10 12 79 FUEL SYSTEM 3A11...

Page 580: ...PIPERNAVAJO SERVICEMANUAL 1108 Figure 9 1a Fuel System Schematic PA 31 300 Reissued 10 12 79 FUEL SYSTEM 3A12...

Page 581: ...EMERGENCY CROSSFEED VALVE 10 FUEL PRESSURE GAUGE 11 FUEL QUANTITY GAUGE 12 FUEL TANK VENT CHECK VALVE 13 OUTBOARD FUEL TANK 14 INBOARD FUEL TANK 15 FUEL FILTER QUICK DRAIN 16 FUEL FILTER 17 FUEL TANK...

Page 582: ...ed The lights are provided with a press to test feature To test depress the button mounted in the center of the light cluster for 3 seconds the lights should illuminate and remain on for 10 seconds Du...

Page 583: ...ED 12 LINE FROM INBOARD CELL 13 FILTER FUEL 14 DRAIN FUEL FILTER 15 PUMP FUEL BOOST 16 VENT FUEL PUMP 17 BUSHING 18 PUMP EMERGENCYFUEL 19 ROD LEFT EMERGENCYSHUTOFF VALVE CONTROL 20 VALVE LEFT EMERGENC...

Page 584: ...P FILLER 8 ADAPTER FILLER 9 GASKET 10 PLATE CELLATTACHMENT 11 BRACKET FILLERNECK 12 VENT NON ICING 13 CHECKVALVE 14 GASKET 15 GASKET FUELSENDER 16 GASKET FUELSENDER 17 DRAINASSEMBLY 18 SKIN NACELLETOP...

Page 585: ...or another protective material around the cell access opening to prevent damage to the cell when removing k Push the cell down and work the nylon cord back through the cell hangers and rib bushing to...

Page 586: ...Prior to removal the cells are to be drained of fuel purged with fresh air and swabbed out to remove all traces of fuel Following removal the cells are to be cleaned inside and out with soap and warm...

Page 587: ...t yellowish tan to a dark reddish brown d Check the tension and knots of the two nylon support cords e Inspect the interior of the cell for security of baffle and the free operation of the flapper val...

Page 588: ...iner into the fitting as shown in Sketch B Figures 9 2 and 9 3 b Insert the vent tube into the fitting until the end is flush with the inside edge of the nipple c The hose clamp must be clear of the e...

Page 589: ...PTER FILLER 9 GASKET 10 GASKET 11 PLATE CELL ATTACHMENT 12 KNOT AND WASHER 13 VALVE CHECK 14 BUSHING SNAP 15 LINER CELL 16 LOOP ATTACHMENT 17 RIB ASSEMBLY 18 CORD 19 CLAMP 20 PLATE DRAIN 21 SCREW 22 C...

Page 590: ...CELL ATTACHMENT 12 KNOT AND WASHER 13 VALVE CHECK 14 BUSHING SNAP 15 LINER CELL 16 LOOP ATTACHMENT 17 RIB ASSEMBLY 18 CORD 19 CLAMP 20 PLATE DRAIN 21 SCREW 22 SCREW NYLON 23 GASKET 24 STRAINER 25 NIP...

Page 591: ...40C Type III specifications It is obtainable through Goodyear j Double tie a washer AN960 416 securely to the ends of each cord Reach through the access openings and start the cord through the spar bu...

Page 592: ...sleeve is insulating to point where wire attaches sender Install sender access plates s Draw the nylon tie cords tight and hold Ascertain the cell is in correct position in the cell compartment Again...

Page 593: ...ha protective coverso as not to damage the cell insert it through the accessopeningand slideit in position Install the gasket betweenthe bracket and celland start the cap boltsthat attach the brackett...

Page 594: ...ell not correspond the gauge may be calibrated per paragraph 9 9 9 8a CHECKING FUEL QUANTITY SENDERS a Disconnect the sender unit and check for the ohm readings noted in Table IX I TABLE IX I FUEL QUA...

Page 595: ...capacity of the cells At each quarter increment until full adjust the wire with the pointer in the same manner 9 10 HANDLING AND STORAGE OF FUEL CELLS a Prevent needless damage by exercising common se...

Page 596: ...recommended field repair procedures for fuel cells constructedof Loral BTC 85 material Any of three methods may be used for repairs heat cure air cure or quick cure All repairs are neat and permanent...

Page 597: ...eal surface rework and coat stock j Do not exceed four heat cure repairs in the same area NOTE Any damaged fuel cell that cannot be repaired using the above procedures should be returned for repair to...

Page 598: ...ohol Balloon or broad cloth 2F1 3 35721 1heat cure iron C clamps Vaporproof light Sheers Electric motor Abrasive armor Sanding sleeve Abrasive cloth Abrasive cloth Scale Manometer Closure plates QUANT...

Page 599: ...Repair fabric and cement can be purchased separately by specifyingthe code number or national stock number NSN listed above 4 Solvent and Clean cloth can be purchased fromAero Hardwareor a local supp...

Page 600: ...luminum plates must be larger than patch o Cover one side of aluminum plate with0 25 inch fabric backed airfoam fabric side out Tape airfoam into place Ensure airfoam covers edges of plate forprotecti...

Page 601: ...olution to come in contact with hands eyes or clothing 9 1 3d ACCESSORY REPLACEMENT a Obtain cured repair accessory from cell manufacturer b Mark location of old accessory and preserve markings for gu...

Page 602: ...a phenolphthalein solution as follows Add 40 grams phenolphthalein crystals in 1 2gallon of Ethyl Alcohol mix then add 1 2 gallon of water 3 Pour ammonia on an absorbent cloth in the ratio of 3ml per...

Page 603: ...llowing procedure a Remove the access plate located forward of the main spar on the underside of the wing between the wing and fuselage b If the selector valve is to be removed drain the appropriate f...

Page 604: ...ree from nicks dents and burrs 2 Check that the teeth of the gear and spool are not damaged 3 Check that the threaded surfaces are not stripped or cross threaded 4 Check that the selector detent mecha...

Page 605: ...ontrol lever to the right c Apply pressure to 25 psig There shall be no evidence of leakage either through the port or around the fitting and lever when submerged in kerosene or similar petroleum base...

Page 606: ...Fitting 4 in valve is special Do not use AN fittings 9 23 ASSEMBLY OF CROSS FEED VALVE Refer to Figure 9 7 a If seat valve 4 was removed install the O ring packing 6 and assem ble the seat fitting on...

Page 607: ...is limited to reconditioning of parts such as smoothing out minor nicks and scratches and replacing of O rings 9 27 ASSEMBLY OF EMERGENCY SHUT OFF VALVE Refer to Figure 9 8 a Ascertain that the snap...

Page 608: ...LINE L DECK PRESSURE 22 LINE L FUEL PRESSURE 4 6 7 23 LINE L FUEL FLOW PRESSURE 2 824 RIG ASSEMBLY 26 LINE TO L ENGINE 27 VALVE EMERGENCY SHUT OFF 1 r 1 L 1 28 CONTROL EMERGENCY SHUT OFF 29 BRACKET MO...

Page 609: ...1114 1116 PIPER NAVAJO SERVICE MANUAL SKETCH A 23 SKETCHC Figure 9 9 Fuel System Installation PA 31 Turbo cont 3B17 Reissued 10 12 79 FUEL SYSTEM...

Page 610: ...FUEL FLOW PRESSURE 21 RETAINING BLOCK 22 LINE L DECK PRESSURE 23 LINE L FUEL FLOW PRESSURE 24 RIG ASSEMBLY 3 25 SHOCK O RING 1 26 LINE TO L ENGINE 27 VALVE EMERGENCY SHUT OFF 28 CONTROL EMERGENCY SHU...

Page 611: ...1118 PIPER NAVAJO SERVICE MANUAL SKETCHA 1121 SKETCHB Figure 9 9a Fuel System Installation PA 31 300 cont Reissued 10 12 79 FUEL SYSTEM 3B19...

Page 612: ...ectorvalvehandle in the cockpit and that the valveis in neutral or OFF position The wireon the valvehandle should be free to rotate Lubricate the external parts of the selector valvesprocket Scott val...

Page 613: ...LVE a Remove the fuel selector panel cover in the cockpit and the access panel to the control valve located just ahead of the main spar between the fuselage and the underside of the wing b Ascertain t...

Page 614: ...o disassemble the filter cartridge remove the retainer cup 13 from the outer tube 3 and slide discs 11 and washers 12 from the outer tube Do not use a screwdriver or sharp tool that may damage the dis...

Page 615: ...and electric fuel pump Tighten the jam nut on the fitting between the pump and filter to allow the O ring to seat on the non threaded portion of the fitting b Position the filter and pump on the moun...

Page 616: ...ating the pump from the motor to insure that the shaft end bearing which is a press fit on the armature shaft slips out of the pump body housing After separation of the pump and motor disassembly of t...

Page 617: ...e slots with the notches toward the outer edge of the insert Secure the blades with the blade retaining spnng 5 Clearance across the top of the rotor and blades should measure a nominal 0005 after rea...

Page 618: ...W ADJ 11 LOCKNUT VALVE 12 RING RET TRUARC 13 DELETED 14 CAGE SEAL 15 DELETED 16 0 RING 17 BLADE 18 WASHER SEAL 19 SPRING SEAL 20 DELETED 21 0 RING 22 0 RING 23 PLUG DRAIN 24 INSERT BEARING RET 25 WEAR...

Page 619: ...A B C D E WORN PART LIMIT 2502 MAX 6252 MAX 6252 MAX 0455 MAX 2493 MIN DIM F G H J K WORN PART LIMIT 6245 MIN 6244 MIN 6246 MIN 298 MIN 0448 MIN INSERT B F ROTOR A WEAR NOTCH EXCEEDING 010 IN DEPTH IN...

Page 620: ...ew with the locknut Remove the fuel lines from the pump 9 46 ADJUSTMENT OF ELECTRIC FUEL PUMP IN THE AIRPLANE a With the access panels removed and the fuel selector in the OFF position remove the fuel...

Page 621: ...wing and the fuselage c Disconnect the electrical leads to the fuel pump Identify leads to facilitate reinstallation d Disconnect the fuel lines from the fuel pump and filter assembly Cover the line...

Page 622: ...LETED 8 DELETED 9 PISTON 10 VALVE SPRING 11 O RING SEAL 12 ADJUSTING GUIDE 13 ADJUSTING SCREW 14 LOCKNUT 15 RING RETAINER 11 REFER TO PARAGRAPH 9 42 IF PUMP SHOWN ABOVE HAS BEEN REPLACED BY A PUMP SHO...

Page 623: ...e valve spring 10 into the end of the piston assembly 9 c Assemble the O ring 11 onto the guide 12 and install the valve adjust ing screw 13 and locknut 14 into the guide 12 d Install the adjusting gu...

Page 624: ...maximum no flow reading Note above On PA 31 325 if the boost pump is operated in conjunction with electric fuel pump the pressure reading should be 47 to 54 psi maximum no flow Do not keep the bypass...

Page 625: ...itting between the pump and filter to allow the O ring to seat on the non threaded portion of the fitting b Position the fuel pump and filter on the mounting brackets and secure with bolts c Connect t...

Page 626: ...s not become grounded which will ruin the solid state unit 9 61 REMOVAL INSTALLATION AND ADJUSTMENT OF THE FUEL FLOW SENSOR PROBE Removal is accomplished by the following a Remove the cover plate aft...

Page 627: ...STEP 1 PIPER NAVAJO SERVICE MANUAL 1124 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 Figure 9 13 Fuel Cell Tie Detail Reissued 10 12 79 FUEL SYSTEM 3C11...

Page 628: ...ells c Remove the cotter pin and castle nut or safety wire and plain nut and washer securing the probe to the mounting plate also remove and discard the gasket between the mounting plate and probe d A...

Page 629: ...n wing sticking Check ground connec tions at fuel transmit ters in wings and at gauge Check fuel transmitters in wings and repair or replace Fuel gauge indicating approximately 1 2 tank when tank is f...

Page 630: ...on inelectric pump Check by pass valve Air leak in intake lines Defective gauge Replace gauge Pressure low or pres sure surges Obstruction in inlet side of pump Trace lines and locate obstruction Faul...

Page 631: ...ty indicator circuit breaker Trace through system for an open circuit or faulty component Check free movement of probe tip replace if defective Replace relay after the cause for the white wire to grou...

Page 632: ...us Replace Check and reset the gear oil temperature and fuel quantity indicator circuit breaker If the breaker is popped the fuel flow warning lights have failed also Trace through system for an open...

Page 633: ...ights No power from bus Check and reset the gear oil temperature and fuel quantity indicator circuit breaker Trace through system for an open circuit or faulty component Test switch malfunction Check...

Page 634: ...PIPER NAVAJO SERVICE MANUAL 3C18 THRU 3C20 INTENTIONALLY LEFT BLANK 3C18...

Page 635: ...llation with De lcer Boots 3D9 10 20 Single or Dual Attitude and Directional Gyro Installation with H 14 Autopilot 3D13 10 21 Single or Attitude and Directional Gyro Installation with De lcer Boots H...

Page 636: ...eakers to isolate the individual systems in the event of trouble For night operation each instrument is either individually lighted by shielded post lights or a light incorporated as part of the instr...

Page 637: ...PILOT COUPLER 23 TRANSPONDER 24 CIGAR LIGHTER 25 ADF INDICATOR 26 LANDING GEAR CONTROL HANDLE 27 LANDING GEAR INDICATOR LIGHTS 28 RADAR SCREEN AND CONTROLS 29 MANIFOLD PRESSURE GAUGE 30 EGT INDICATOR...

Page 638: ...chanical linkage picks up this motion and moves the instrument pointer to the indicator speed The instrument dial is calibrated in knots and milesper hour and also has the necessary operating range ma...

Page 639: ...ed and their adjustment procedures given in their related sections in this manual 10 7 MISCELLANEOUS INSTRUMENTS The magnetic compass installed in the PA 31 is a self contained instrument and is mount...

Page 640: ...UNDER IFR CONDITIONS SEE ADVISORY CIRCULAR AC43 13 1A SECTION 4 OF CHAPTER 16 REFER TO PARTS CATALOG FOR TYPICAL SYSTEMS ROUTING 1 1 PITOT HEAD 2 ALTERNATE STATIC SOURCE 3 ALTIMETER 4 AIRSPEED INDICA...

Page 641: ...or range of illumination burned out bulbs and defective controls Check wiring for chafing excessive tension improper support or broken lacing and ties h Check instruments for evidence of overheating o...

Page 642: ...the post light s and secure Do not over tighten nut 3 Connect the plumbing and or electrical connector to back of instrument 4 Connect the electrical connector of the post light s Tighten connector f...

Page 643: ...ends restrictions or leaks b Has the central air filter been replaced c Is the instrument properly mounted in the panel d Does the instrument physically touch other instruments tubing or airframe memb...

Page 644: ...pneumatic system WARNING Do not make adjustments of the regulators that are within the engine nacelles while engines are running 10 17 SINGLE ATTITUDE AND DIRECTIONAL GYRO INSTALLATION The required re...

Page 645: ...source malfunction Is Indicated not at the gauge but rather at the pneumatic source malfunction lights on the left instrument panel PNEUMATIC PRESSURE SWITCH MANIFOLD CHECK VALVE Figure 10 2a Single A...

Page 646: ...7612019 and up pneumatic source malfunction Is indicated not at the gauge but rather at the pneumatic source malfunction lights on the left instrument panel Figure 10 3 Dual Attitude and Directional G...

Page 647: ...decrease pressure d Repeat the preceding step for the other engine e With engine shut down turn the adjustment screw of the center regulator counterclockwise to the approximate position of the screw b...

Page 648: ...and up pneumatic source malfunction is Indicated not at the gauge but rather at the pneumatic source malfunction lights on the left instrument panel PNEUMATIC PRESSURE SWITCH 1248 B Figure 10 4 Singl...

Page 649: ...ight does not function check and reset circuit breaker a short circuit may exist 5 Remove the test rig lubricate threads replace and tighten items dismantled i With the boot pressure test completed re...

Page 650: ...ntrolled relay valve for serial numbers 31 855 and up refer to Figure 10 7 use the following procedure a Install a test gauge in co pilot gyro pressure line A hypo needle inserted in the hose from the...

Page 651: ...red The tap fitting is three sixteenth straight thread flared Refer to Figure 10 5 c Operate one engine at 2500 rpm and check if the pressure gauge at the nacelle reads 10 25 psi Should the reading no...

Page 652: ...r to Figure 10 5 c Operate one engine at 2500 rpm and check if the pressure gauge at the nacelle reads 10 25 psi Should the reading not be within tolerance shutdown the engine and remove the forward a...

Page 653: ...PRESSURE PIPER NAVAJO SERVICE MANUAL 1236 AUTOPILOT SERVO SYSTEM Figure 10 6 Single or Dual Attitude and Directional Gyro Installation With H 14 Autopilot Reissued 10 12 79 INSTRUMENTS 3D 15...

Page 654: ...to decrease pressure k Operate both engines turn on de icer switch and ascertain that the pressure gauge surges to 18 50 psi 1 With both engines operating at 2500 RPM check if pressure gauge located i...

Page 655: ...STMENT PILOT GYRO ADJUSTABLE ORIFICE ELECTRICALLY OPERATED 355 PNEUMATICALLY OPERATED SERIAL NOS 31 855 AND UP TO PILOT GYROS PILOT GYRO PRESS ADJUSTMENT SCREW TO COPILOT GYROS ADJUSTMENT SCREW NOTES...

Page 656: ...fittings on pump check for external damage A pump that has been damaged or dropped should not be installed When a vise is used to secure pump while installing fittings suitable caution must be exerci...

Page 657: ...PIPER NAVAJO SERVICE MANUAL 1237 Figure 10 8 Single or Dual Attitude and Directional Gyro Installation With Deicer Boots and H 14 Autopilot Reissued 10 12 79 INSTRUMENTS 3D19...

Page 658: ...pproaches a stall Also refer to Paragraph 11 95 10 23 REMOVAL OF LIFT DETECTOR Refer to Chapter 11 10 24 INSTALLATION OF LIFT DETECTOR Refer to Chapter 11 10 25 ADJUSTMENT OF LIFT DETECTOR Refer to Ch...

Page 659: ...the meter It will burn out the movement of the meter 10 30 INSTALLATION OF EGT PROBE AND GAUGE a Install the probe into the hole in the transition area of the exhaust system and secure withlocknut The...

Page 660: ...aragraphs on Removal of Instruments and Installation of Instruments 10 35 REPLACEMENT OF BATTERY Digital Clock The AAA type alkaline battery has a useful life of approximately 24 months To replace the...

Page 661: ...decimal point annunciator over the CLOCK legend and to place the display in the CLOCK mode 2 Press the SET button once The digital display will indicate the date Advance to the desired month by pressi...

Page 662: ...THIS PAGE INTENTIONALLY LEFT BLANK 3D24...

Page 663: ...3E BLANK INTENTIONALLY LEFT BLANK...

Page 664: ...oscillates or shim mies continuously Excessive vibration Check shock mounts Replace if necessary Pressure too high Defective mechanism Adjust valve Replace instrument DIRECTIONAL GYROINDICATOR Excess...

Page 665: ...ing knob is hard to turn Inner reference mark er fails to move when setting knob is rotated Setting knob set screw loose or missing Improper calibration adjustment Defective mechanism Improper venting...

Page 666: ...nchronism with pointers Slippage of mating parts Drift in mechanism Replace instrument Refer to the latest revision of AC 43 13 1 AIRSPEED TUBES AND INDICATOR Tube does not heat or clear itself of ice...

Page 667: ...inter oscillates Aging of diaphragm Obstruction in static line Leaks in static line Reset pointer to zero by means of setting screw tap instrument while resetting Disconnect all instru ments connected...

Page 668: ...by means of sen sitivity spring screw If this pulls the pointer from zero replace instrument Replace instrument Pointer incorrectly set on its staff Sensitivity adjustment pulls pointer off zero Repla...

Page 669: ...rotor pivots Instrument out of align ment on panel Replace instrument Replace instrument Correct alignment OIL TEMPERATURE INDICATORS Instrument fails to show any reading Excessive scale error Pointer...

Page 670: ...line connections Adjust damping screw Replace filter Broken or loose cover glass Vibration or excessive pressure Replace glass and re seat case Dull or discolored luminous markings Age Replace instru...

Page 671: ...ect line and drain Check for leaks If trouble persists clean and adjust relief valve Check and clean TACHOMETER NOTE Ascertain that the drive cable from the tachometer will rotate properly engine to t...

Page 672: ...ation Card sluggish Liquid leakage Improper mounting on instrument panel Insufficient liquid Weak card magnet Excessive pitov fric tion or broken jewel Instrument too heavily compensated Loose bezel s...

Page 673: ...out lamp or broken circuit Check lamp or continuity of wiring EXHAUST GAS TEMPERATURE Gauge inoperative Fluctuating reading Defective gauge probe or wiring Loose frayed or broken electrical lead Isola...

Page 674: ...Check operation of valve valve and replace if necessarv No pressure gauge in dication at instrument No pressure gauge in dication at instrument No pressure gauge in dication at the instru ment or sou...

Page 675: ...ot inflate Both engines operating at minimum cruise RPM or either engine at 2500 ground RPM Open circuit breaker System connection loose or wire broken Push circuit breaker to reset Tighten or repair...

Page 676: ...n Ascertain that De Icer boot switch is ON Indicator lamp burned out System pressure not being reached Replace lamp Check De Icers inflate slowly above Pressure switch not functioning Wires loose or b...

Page 677: ...BLESHOOTING CHART PRESSURE SYSTEM cont Trouble Cause Remedy All switching operates properly but AutoPilot is inoperative No pressure at servo actuators Check for clogged or disconnected lines Blow out...

Page 678: ...3E16 THRU3L24 INTENTIONALLY LEFT BLANK...

Page 679: ...AIRPLANE SERVICE MANUAL CARD 4OF5 PA 31 PA 31 300 PA 31 325 PIPER AIRCRAFT CORPORATION PART NUMBER 753704 4A1...

Page 680: ...fied by revision lines Revisions to service manual 753 704 issued October 1 1966 are as follows PIPER NAVAJOSERVICE MANUAL Revisions Publication Date Aerofiche Card Effectivity ORG661001 CR720707 CR79...

Page 681: ...2 VI HYDRAULIC SYSTEM 2A9 VII LANDING GEAR AND BRAKE SYSTEM 2E4 VIII POWER PLANT PA 31 Turbo 2H6 VIIIA POWER PLANT PA 31 300 2K8 VIIIB POWER PLANT PA 31 325 2K18 AEROFICHE CARD NO 3 IX FUEL SYSTEM 3A8...

Page 682: ...l Alternator Wiring System Prestolite 4B15 11 18 Removal of Rectifier 4B18 11 19 Removal of Slip Ring End Bearing 4B18 11 20 Removal of Drive End Head 4B19 11 21 Removal of End Head Bearing 4B19 11 22...

Page 683: ...g Motor Commutator Testing Motor Armature for Shorts Testing Motor Fields for Grounds No Load Test Hook up Stall Torque Hook up Door Ajar Switch Cargo Door Installed Landing Light 4C20 4C20 4C21 4C21...

Page 684: ...XI VI XI VII Troubleshooting Chart Electrical System Circuit Load Chart Lamp Replacement Guide Component Values to Obtain Balanced Light Output Intensity Electrical Wire Core Coding Electrical Symbol...

Page 685: ...rush Replacement 4B6 11 17 Heat Sink Replacement 4B7 11 18 Reassembly of Alternator 4B7 11 19 Alternator Service Test Specifications 4B8 11 20 Output Check 4B8 11 21 Regulator Delco Remy 4B10 11 22 Ch...

Page 686: ...Purpose and Operation 4C13 11 54 Test Procedure 4C14 11 55 Overvoltage Relay Operational Check Non Paralleling System 4C14 11 56 Overvoltage Relay Operational Check Paralleling System 4C15 11 57 Metho...

Page 687: ...Lights 4D6 11 90 Door Ajar Switches 4D6 11 91 Removal of Door Ajar Switch Serial Nos 31 2 to 31 32 incl 4D6 11 92 Installation of Door Ajar Switch Serial Nos 31 2 to 31 32 incl 4D6 11 93 Adjustment of...

Page 688: ...and up 11 127 Installation of Tail Anti Collision Light Serial Nos 31 962 and up 11 128 Removal of Red Strobe Power Supply Serial Nos 31 1 to 31 961 11 129 Installation of Red Strobe Power Supply Seri...

Page 689: ...148 Installation of Solid State Dimmer Assembly Serial Nos 31 7512046 to 31 7812129 11 149 Removal of Solid State Dimmer Serial Nos 31 7912001 and up 11 150 Installation of Solid State Dimmer Serial N...

Page 690: ...THIS PAGE INTENTIONALLY LEFT BLANK 4A12...

Page 691: ...THIS PAGE INTENTIONALLY LEFT BLANK 4A13...

Page 692: ...THIS PAGE INTENTIONALLY LEFT BLANK 4A14...

Page 693: ...THIS PAGE INTENTIONALLY LEFT BLANK 4A15...

Page 694: ...e in an overhead panel just above the windshield and in a panel along the lower section of the instrument panel A fuse block is located on forward left side of bulkhead 81 00 for the alternator circui...

Page 695: ...1268A SKETCHA ON ON ON SKETCH B SKETCH C SKETCH F PIPER NAVAJO SERVICE MANUAL 1269A SKETCH D Figure 11 1 Overhead Switch Panel Reissued 10 12 79 4A17 ELECTRICAL SYSTEM...

Page 696: ...PIPER NAVAJO SERVICE MANUAL Figure 11 2 Switch and Circuit Breaker Control Panel Reissued 10 12 79 ELECTRICAL SYSTEM 4A18...

Page 697: ...r Seat Belt sign can be installed with their switches located on the right cockpit separation panel on earlier models or in the overhead panel on later models An optional reminder chime may also be in...

Page 698: ...erate In flight the ventilating fan motor isdisabled through the gear safety switch byremoving itsground On models withSerial Nos 31 8012001and up the heater incorporates a reset in flight feature in...

Page 699: ...monitor alter nator output The field circuit consists of a 10 ampere thermal circuit breaker a volt age regulator selector switch overvoltage relay radio noise filter and a special switch ganged to t...

Page 700: ...ect a voltmeter or 28 volt test light to the battery lead and to ground If a reading of approximately 28 volts registers on the voltmeter or the test light lights the battery circuit is oper ational f...

Page 701: ...FIGURE FORREFERENCEPURPOSESONLY NO T VOLTAGE REGULATORS MASTER SWITCH F F LEFT ALTERNATOR SWITCH RIGHT ALTERNATOR AMMETER Figure 11 3 Dual Alternator Wiring System Delco Remy For Reference Purposes On...

Page 702: ...negative terminal d Never operate the alternator on open circuit Make absolutely certain all connections in the circuit are secure e Do not short across or ground any of the ter minals on the alternat...

Page 703: ...s are to be re used clean with a soft dry cloth CAUTION Do not use black friction tape Use only pressure sen sitive tape that will not leave any contamination on the shaft surface To remove the drive...

Page 704: ...e is in the stator or rectifying diodes STATOR CHECKS To check the stator windings remove all three stator lead attaching nuts Refer to Figure 11 7 and then separate the stator assembly from the end f...

Page 705: ...the heat sink by connecting one of the ohmmeter leads to the heat sink and the other ohmmeter lead to the diode lead and note the reading Refer to Figure 11 8 Then reverse the ohmmeter lead connectio...

Page 706: ...two checks Special Tester Method Special testers are available which operate without disconnecting the stator To use these testers follow the tester manufacturer s reco mmendations 11 13 DIODE REPLACE...

Page 707: ...ARING REPLACEMENT AND LUBRICATION The bearingin the drive end frame can be removed by detaching the retainer plate screws and then press ing the bearing from the end frame If the bearing is in satisfa...

Page 708: ...e assembly the brushes will fall down onto the shaft and come in contact with the lubricant If the brushes are to be re used they must be thoroughly cleaned with a soft dry cloth Also the shaft must b...

Page 709: ...vise only tight enough to permit tightening the shaft nut to 50 60 foot pounds If ex cessive pressure is applied against the rotor the assembly may become dis torted To install the slip ring end frame...

Page 710: ...Output Amps 50 11 20 OUTPUT CHECK To check the alternator on a test bench make elec trical connections as shown in Figure 11 10 operate at specified speed and check for rated output as given in Parag...

Page 711: ...ammeter readings Very low Lamp lights Any reading very high Fails to light Both readings very low Both readings very high Lamp fails to light in both checks Lamp lights in both checks Ohmmeter from l...

Page 712: ...ists or occurred at some time However a miscon nection will not always cause a burned circuit trace even though circuit compo nent failures have been caused Before installing a new regulator it is ver...

Page 713: ...the current rating values are found in paragraph 11 19 1 If the reading is the same as the calculated value proceed to part b 2 If reading is much higher infinite than the calculated value proceed to...

Page 714: ...ive line is connected to regulator field terminal and regulator positive terminal is connected to negative side of circuit Either the circuit trace will be burned between points C C D D or E E Figure...

Page 715: ...elay contacts open until the engine is stopped or the master switch is opened The No 1 ter minal on the relay is connected to the master switch and the No 2 terminal to the regulator POS terminal For...

Page 716: ...owly decrease the resistance and observe the maximum voltmeter read ing obtained This reading will be the voltage at which the contacts open d The contacts should open at 32 36 volts If they do not di...

Page 717: ...3179 THIS FIGUREFORREFERENCEPURPOSESONLY VOLTAGE REGULATOR LEFT ALTERNATOR SWITCH RIGHT ALTERNATOR AMMETER Figure 11 17 Dual Alternator Wiring System Prestolite For Reference Purposes Only Revised 1 2...

Page 718: ...ed with a high temperature epoxy cement to provide vibration and temper ature resistance characteristics High temperature solder is used to secure the winding leads to the slip rings f The drive end h...

Page 719: ...ystem is the adjustment of the voltage control on the voltage regulator A voltage of 28 5 volts is maintained All other control adjustments are made at time of installation and need not be reset IMPOR...

Page 720: ...on on each operation In actual service practice these operations may be used as required 11 30 DISASSEMBLY OF ALTERNATOR a Remove the two Number 10 24 screws holding the brush holder assembly in the s...

Page 721: ...shown in Figure 11 19 Do not remove the bearing unless replacement is necessary NOTE The inner race of the slip ring end bearing is pressed onto the rotor shaft When bearing replacement is necessary...

Page 722: ...ding indicates shorted windings No current draw or an infinite ohmmeter reading would indicate an open winding b Rectifiers A diode rectifier tester will detect and pinpoint open or shorted rectifiers...

Page 723: ...stator leads The test bulb must light or the ohmmeter must show continuity Due to the low resistance in the stator windings shorted windings are almost impossible to locate However shorted stator wind...

Page 724: ...tall the rectifiers in the slip ring end head or rectifier mount ing plate by supporting the unit and using the special tools illustrated in Figure 11 25 CAUTION Use an arbor press do not hammer Recon...

Page 725: ...an pulley lock washer and nut Torque the nut to 35 foot pounds using a strap wrench to hold the pulley Do not install the blast tube assembly until after the unit has been bench tested g Install the b...

Page 726: ...st charger is used its polarity must be connected correctly to prevent damage to the electrical system components 11 35 ALTERNATOR NOMENCLATURE a Bearings These units have a sealed ball bearing at the...

Page 727: ...These units use a slip ring end cover that has a hose type connection for air pressure ventilation Remove this cover when bench testing the alternator 11 36 ALTERNATOR SERVICE TEST SPECIFICATIONS PRES...

Page 728: ...al Master Switch Turning both sections of the Master Switch off completely disconnects all electrical power from the aircraft Bus Bar Field voltage will be automatically removed from an alternator whe...

Page 729: ...TOR 90 AMP RIGHT VOLTAGE REGULATOR 5 AMP LEFT VOLTAGE REGULATOR 5 AMP PIPER NAVAJOSERVICEMANUAL THIS FIGURE FOR REFERENCE PURPOSES ONLY C451 5A VOLTAGE REGULATORS ALTERNATORS LEFT ALTERNATOR Figure 11...

Page 730: ...eaker switch for the alternator under test is turned on If a reading of approximately 24 volts is obtained on the voltmeter or the test light glows the output circuit is operational g Should there be...

Page 731: ...The alternator due to its design has self limiting current characteristics and therefore needs no current limiting element in the regulator a Transistor The transistor Symbol Q is an electronic device...

Page 732: ...n rotor RPM and system load connected g Each time the power transistor T3 is turned off current flow in the rotor winding is reduced This causes the rotor magnetic field to collapse which would genera...

Page 733: ...r field current and automatically restore balance between the two voltages applied to comparison transistor Q 1 f Capacitors C1 and C2 function together with their related transistors in a way to smoo...

Page 734: ...set to deliver the highest voltage the balancing circuits are inactive Thus system voltage is determined by the regulator of a pair which is set to higher voltage The lower set regulator will adjust i...

Page 735: ...N INSTANT WHILE POWER IS APPLIED TO THE SYSTEM Due to this precaution the mechanic should not use tools near these circuits while power is applied h The alternator should be in good condition and capa...

Page 736: ...adjustment Before condemning the regulator recheck the alternator and the battery making sure that they are in good condition Recheck all circuit connections and all wiring for unwanted resistance vo...

Page 737: ...ustment These units have an external adjustment located under the plastic plug on top of the regulator The regulator has an adjustment spread ranging from 26 0 volts to 30 0 volts Output is increased...

Page 738: ...ator terminals Replace the snap plug in the RIGHT regulator adjustment access hole CAUTION Do not make any further adjustment of the RIGHT regulator NOTE PIPER NAVAJO SERVICE MANUAL PRECISION V M INIT...

Page 739: ...operation in this manner for 5 to 10 minutes to establish initial warmup of the LEFT regulator and alternator system After the warmup period make a final adjustment of the balance This is done by aga...

Page 740: ...RALLELING SYSTEM This check should be made at each 500 hour inspection per the following instructions a Pull out OFF all circuit breakers except the main and auxiliary voltage regulators 5 amp b Turn...

Page 741: ...il the LEFT overvoltage relay trips out An audible click will be heard when the relay operates and the VOM needle must drop to zero volts Record the power supply voltmeter reading which was indicated...

Page 742: ...manner a Attach the hook of a small spring scale to the belt at the approximate mid point between the ring gear support and the alternator b Pull on the scale until a reading of 14 pounds is obtained...

Page 743: ...MOTORS PRESTOLITE 11 59 DESCRIPTION The gear reduction starting motor consists of six major components The Commutator End Head Assembly The Armature The Frame and Field Assembly The Gear Housing The P...

Page 744: ...reaches a predetermined speed centrifugal action forces the detent pin out of the notch in the screw shaft and allows the pinion to demesh from the flywheel 11 61 MAINTENANCE The starting circuit shou...

Page 745: ...g motor from the engine first dis connect the ground cable from the battery post to prevent short circuiting Dis connect the lead from the starting motor terminal then take out the mounting bolts The...

Page 746: ...can be cleaned with 00 or 000 sandpaper If the commutator is rough or worn it should be turned in a lathe Refer to Figure 11 40 The armature shaft should be inspected for rough bearing surfaces and r...

Page 747: ...ground ed Repair or replace b Inspect all connections to make sure they are clean and tight and inspect insulation for deterioration 11 68 BRUSH HOLDERS a To test brush holders touch one test probe t...

Page 748: ...g arbor for installing graphitized bronze and roller bearings The Bendix shaft should have a thin film of Lubriplate 777 or equivalent on the Ben dix portion of the shaft End play should be 005 to 050...

Page 749: ...in the above test a stall torque test may be made to see if the starting motor is producing its rated cranking power Make test connections as shown in Figure 11 44 c If torque and current are not with...

Page 750: ...ad to the edge of the pinion 11 75 BATTERY 11 76 SERVICING BATTERY Access to the battery is through the nose bag gage compartment panel The stainless steel box has a plastic drain tube located on the...

Page 751: ...e Disconnect wire from fuse at quick disconnect fastener f Tilt battery box toward front of nose cone enough so that the bottom of the box is above forward baggage compartment floor and slide forward...

Page 752: ...eners k Close forward baggage compartment door 11 80 BATTERY BOX CORROSION PREVENTION The following check for corrosion within the battery box should be performed at least every 30 days a Open the cla...

Page 753: ...4D3 INTENTIONALLY LEFT BLANK...

Page 754: ...ternal power receptacle and start RIGHT ENGINE ONLY using normal starting procedures 4 Remove external battery and then reconnect airplane s battery at the negative terminal 5 Turn master switch on an...

Page 755: ...the headliner c Secure the speaker panel assembly to the headliner with attachment screws Replace the two control knobs if previously removed from the forward speaker panel assembly 11 86 REMOVAL OF...

Page 756: ...90 DOOR AJAR SWITCHES 11 91 REMOVAL OF DOOR AJAR SWITCH Serial Nos 31 2 to 31 32 incl There are two switches located in the cabin entrance door frame behind each striker plate a Remove the trim panel...

Page 757: ...posi tive identification when switch is reinstalled c Remove the two locknuts washers and bolts that secure the switch to the bracket on the door The switch can now be removed 11 95 INSTALLATION OF DO...

Page 758: ...th two screws Ascertain that the switch adjusting screw is accessible from the outside of the cargo door channel through the hole below the latch plate d Adjustment of the switch should be made at thi...

Page 759: ...erminal as required 11 102 OVERHEAD SWITCH PANEL Removal of the overhead switches does not require the removal of the trim panel The switches are held in place with clips and can be removed by pulling...

Page 760: ...4D10 INTENTIONALLY LEFT BLANK...

Page 761: ...pedestal by removing panel attachment screws Each bulb is rotated from its socket The cowl flap switches are attached to the panel trim 11 107 LANDING LIGHT 11 108 REMOVAL OF LANDING LIGHT Refer to Fi...

Page 762: ...illextend beyond the leading edge at the point where the liftdetector is mounted With Master Switch inthe ON position gently lift tab stall warning horn and or light should activate On airplanes with...

Page 763: ...p and power off It may be necessary to make several test flights and alternate adjustments before thedesired setting is obtained The stall warning should come on not less than five or more than ten mi...

Page 764: ...sired proceed with step e If not proceed to paragraph 11 121 step d e Remove screws securing fin tip to the fin f Lift fin tip and disconnect electrical connector inside fin tip g Remove screws securi...

Page 765: ...r to the wing tip and remove the cover b Remove the screw securing the lens retainer and remove lens and retainer c Remove the three screws securing the light bracket assembly d Cut the three wires to...

Page 766: ...ed c Position bottom fairing into place leaving enough room to gain access to the two plugs connecting the strobe power supply to the system and connect the two plugs d Secure the bottom fairing into...

Page 767: ...sta 59 and sta 81 b The power supply is mounted on the radio shelf just above the heater Remove the two electrical plugs from the power supply NOTE Mark plugs and sockets to facilitate reinstallation...

Page 768: ...access to the two plugs connecting the strobe power supply to the rest of the system b Disconnect the two plugs and remove bottom tail fairing with the strobe power supply still attached c Remove the...

Page 769: ...power supply allow five minutes of bleed down time before handling the unit b Check for malfunction in interconnecting cables 1 Ascertain pins I and 3 of interconnecting cable are not reversed 2 Using...

Page 770: ...e wing tip c Remove the two screws securing the light assembly to the bracket d Pull light assembly partially out of bracket and disconnect electrical connection e Remove light assembly NOTE Bulb repl...

Page 771: ...e the following instructions 11 145 DESCRIPTION OF OPERATION FOR THE SOLID STATE DIMMER ASSEMBLY The potentiometer s controlling the flight panel lighting is are connected to a Solid State Dimmer asse...

Page 772: ...e the screws securing the dimmer unit to the radio shelf and remove the dimmer unit from the airplane 11 148 INSTALLATION OF SOLID STATE DIMMER ASSEMBLY Serial Nos 31 7512046 to 31 7812129 a Position...

Page 773: ...EMOVAL OF POWER SUPPLY FOR ELECTRO LUMINESCENT PANELS The power supply IS located behind the pilot s instrument panel on the left side a The power supply is mounted to the panel Disconnect the red and...

Page 774: ...4D24 INTENTIONALLY LEFT BLANK...

Page 775: ...ate Low battery charge Check and recharge if necessary Defective or improper wiring or loose connec tions Defective starter sole noid or control switch Binding worn or im properly seated brush or bru...

Page 776: ...brush Pull sand paper in the direction of rotation being careful to keep it in the same contour as the commu tator CAUTION Do not use coarse sand paper or emery cloth After seating clean thoroughly t...

Page 777: ...Remove Bendix drive assembly Clean and check replace Disassemble clean in spect and relubricate replacing ball bearings if worn Same electrical causes listed under Motor fails to operate Same remedies...

Page 778: ...at to replace Standing too long Equipment left ON accidentally Impurities in electrolyte Short circuit ground in wiring Broken cell partitions Reduce use of starter or the ground use exter nal power w...

Page 779: ...yte runs out of vent plugs Frozen battery Charging rate too high Too much water added to battery tighten Replace Reduce Drain and keep at pro per level Excessive corrosion inside container Battery fre...

Page 780: ...ell Replace battery only BATTERY DISCONNECT SOLENOID Does not operate Open circuit Repair wiring Dirty contacts on con nector plug Open circuited solenoid coil Plunger binding Clean contacts Replace u...

Page 781: ...MANUAL TABLE XI I TROLBLESHOOTING CHART ELECTRICAL SYSTEM cont Trouble Cause Remedy Intermittent operation cont Badly burned points If points cannot be dressed down replace the unit Revised 10 12 83 E...

Page 782: ...YSTEM LANDING GEAR WARNING SYSTEM WITH WARNING FLAG 2 HORIZON GYRO LEFT SIDE 2 DIRECTIONAL GYRO LEFT SIDE 10 HEATING ELEMENT LEFT PITOT 5 ROTATING BEACONS RED STROBES WITH POWER SUPPLY 5 WING TIP LIGH...

Page 783: ...RNATOR FIELD 5 2 WHITE WING TIP STROBESW POWERSUPPLY 25 HEATING ELEMENT TIMER CONTROL SOLENOIDS 10 WINDSHIELD WIPERMOTOR 1SET 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 SYSTEM 1SYSTEM 1SYSTEM 1 SYSTEM 1 SYSTEM 1SY...

Page 784: ...1 1 1 1 1 XMITT RCV XMITT RCV XMITT RCV XMITT RCV XMITT RCV XMITT RCV 3 50 5 75 5 75 1 22 1 00 1 30 1 40 2 40 2 90 0 58 0 21 0 21 0 33 4 28 1 83 4 07 0 49 0 62 0 07 5 23 0 52 4 20 1 05 4 20 1 05 0 15...

Page 785: ...1 Strobe White See Note I Taillight See Note 1 Taillight See Note 2 Tail Strobe See Note 2 Trim Indicator Voltmeter Voltmeter ARB Wing Inspection Wing Tip Position Wing Tip Strobe See Note 2 472 028 4...

Page 786: ...E Balancing of light output intensity is only needed when green light and blue light panels are mixed in the same aircraft Use the following procedure on the green light panels only Insert in series w...

Page 787: ...Left Wing and Nacelle C E F G H J L M P Q RP RZ PF WW CONTROL SURFACE ENGINE MONITORING E 200 Series Right Wing and Nacelle FLIGHT INSTRUMENT LANDING GEAR E 300 Series Aft Fuselage HEATER VENTILATING...

Page 788: ...UTCH BEACON PNEUMATIC SWITCH PRESS N C OR VACUUM N O DIODE PNEUMATIC SWITCH PRESS N O OR VACUUM N C ZENER DICDE TERMINAL BLOCK 0 0 0 0 0 0 0 0 POTENTIOMETER LAMP FUSE RESISTOR GROUND BUTT CONNECTORS C...

Page 789: ...J8 11 142 S N s 31 7712074 to 31 8012045 4J9 11 146 S N s 31 8012046 and up 4J II Refreshment Unit 11 143 S N s 31 7712001 and up 4J9 DEICE SYSTEMS Heated Lift Detector Stall Warning 11 96 S N s 31 76...

Page 790: ...12 11 148 ELT NARCO 4J12 ENGINE SYSTEMS Cowl Flaps Refer to Flap Systems Oil and Cyl Head Temp Referto Indicators Starter Magnetos and HourMeter 11 114 S N s 31 2 to 31 45 31 47 to 31 54 and 31 56 to...

Page 791: ...nd up 4F22 FUEL SYSTEMS Boost Pump and Fuel Flow Warning 11 125 S N s 31 1 to 31 7712103 4119 11 126 S N s 31 7812001 and up 4121 Fuel Supply Pumps 11 51 S N s 31 1 to 31 7300841 4E22 11 52 S N s 31 7...

Page 792: ...N s 31 1to 31 7300841 4E20 11 48 S N s 31 7300842to 31 7612110 4E20 11 49 S N s 31 7712001to 31 7812129 4E21 11 50 S N s 31 7912001and up 4E21 Position Light 11 55 S N s 31 1to 31 7300961 4E24 11 56...

Page 793: ...Ajar Switches 11 117 S N s 31 2to 31 32 413 11 118 S N s 31 33to 31 7300854 415 11 119 S N s 31 7300835to 31 7612110 417 11 120 S N s 31 7712001to 31 7812129 419 11 134 S N s 31 7912001and up 4J5 Chim...

Page 794: ...LACARD LANDING LIGHT SWITCH Figure 11 47 Landing Taxi and Wing Inspection Lights S N 31 1 to 31 7300841 LUMINESCENT SWITCH PLACARD LANDING LIGHT SWITCH Figure 11 48 Landing Taxi and Wing Inspection Li...

Page 795: ...AXI 8 WINGINSPECTION LANDING B TAXI E3OIA LIGHTS LIGHTS SAFETY SOLENOID LANDING a TAXILIGHTS CONN E3018 E302A C TO N05E q LIMIT SWITCH CONN CONN CONN CONN CONN LEFT WING INSPECTION WING WING LIGHT SWI...

Page 796: ...PIPER NAVAJO SERVICE MANUAL INTENTIONALLY LEFT BLANK 40179 BO EL 1 FUEL PUMP LEFT Figure 11 51 Fuel Pumps S N 31 1 to 31 7300841 Reissued 10 12 79 ELECTRICAL SYSTEM 4E22...

Page 797: ...O SERVICE MANUAL EL1 40179 FUEL PUMP LEFT FUEL PUMP RIGHT FUEL PUMP SWITCHES Figure 11 52 Fuel Pumps S N 31 7300842 to 31 7612110 1 PIN 9 CONN E300A USED ON S N 31 7912001 AND UP FUEL PUMP RIGHT BLACK...

Page 798: ...T SWITCH PLACARD PIPER NAVAJO SERVICE MANUAL E12 40179 CONN E307 FUEL PUMP LEFT RIGHT FUEL PUMP Figure 11 54 Fuel Pump Left S N 31 7712001 and up Figure 11 55 Position Lights S N 31 1 to 31 7300961 Re...

Page 799: ...7812129 EL37 40178 CONN L E328 SEE CHAPTER 12 FOR ELT CONN CONN SCHEMATIC 2 POSITION LIGHTS POSITION SWITCH GREEN 20 CONN f301A L14EE SEE STROBE See Note I LIGT SCHEMATIC LOSE RIGHT WING 20 ROOT POSI...

Page 800: ...NT FAN LUMINESCENT SWITCH PLACARD Figure 11 58 Pitot Heat and Ground Vent Fan S N 31 1 to 31 7300841 EL3 40179 PIN 3 USED ON LATER MODELS Figure 11 59 Pitot Heat and Ground Vent Fan S N 31 7300842 to...

Page 801: ...ER NAVAJO SERVICE MANUAL CONN CONN E3018 LEFT HEATEO HEATED Figure 11 60 Pitot Heat Left and Right EL4 54408 EL4 43817 Figure 11 61 Voltmeter S N 31 5 to 31 7512069 Revised 1 29 82 Figure 11 62 Voltme...

Page 802: ...L ELS 43808 POSITIVE WIRE OF MAP LIGHT ONO NOO I TO ALTERNATOR 20 TO ALTERNATOR AUX TERMINAL NOTE AR8 ONLY Figure 11 63 Alternator Indicator Lights ARB only EL6 40179 LEFT TURN BANK RIGHT TURN BANK Fi...

Page 803: ...LUMINESCENT Z SWITCH PLACARD PIPER NAVAJO SERVICE MANUAL EL6 40179 BEACON SWIT BEACON Figure 11 65 Rotating Beacon S N 31 1 to 31 7300961 EL7 42637 L94DE TOP ROTATING BEACON Figure 11 66 Heated Winds...

Page 804: ...POWER SOLENOID SERIAL NOS 31 2 TO 31 238 INCL EL 54 40179 BO NOTE FORINSTALLATION REFERTOALTERNATOR SYSTEM EXTERNALPOWER MASTER SOLENOID CONTACTOR TO AMMETER SHUNT Serial Nos 31 239 to 31 7300841 TO O...

Page 805: ...IPERNAVAJO SERVICE MANUAL i o GROUND GROUND CLEARANCE SWITCH LATER MODELS EL5 43815 EXTERNAL POWER EXTERNALPOWER MASTER SOLENOID CONTACTOR Special ARB Figure 11 68 External Power Revised 10 12 83 ELEC...

Page 806: ...CONTROLLER SCHEMATIC FOR PRESSURE SWITCHES WIRING ON S N 7812001 AND UP PNUEMATIC MALFUNCTICN LIGHTS Figure 11 69 Pneumatic Source Malfunction Lights and Switches S N 31 7612019 to 31 7612076 RELIEF...

Page 807: ...RE SWITCH PIPERNAVAJO SERVICEMANUAL TIMER 6 TAPEANDTIE BACKWHEN H 14AUTOPILOT ISNOT INSTALLED RELAY VALVE RELIEF VALVE RELIEF VALVE DEICER CONTROL VALVE N O Figure 11 71 Pneumatic Deicing S N 31 1 to...

Page 808: ...VAJO SERVICE MANUAL EL12 42600 BUS BAR RELIEF VALVE RELIEF VALVE RELAY VALVE DE ICER CONTROL VALVEIN C DEICER CONTROL VALVE N O Figure 11 72 Pneumatic Deicing S N 31 745 to 31 7512009 Reissued 10 12 7...

Page 809: ...BAR PIPER NAVAJO SERVICE MANUAL EL13 54925 TIMER Figure 11 73 Pneumatic Deicing S N 31 7612077 to 31 7912124 Reissued 10 12 79 4F11 ELECTRICAL SYSTEM...

Page 810: ...ND TRIGGER 12 SEC 12 SEC 2ND 6 SEC I ST 6 SEC a GYRO REG SOLENOID WING DE IC ENGAGE VALVES E 2 STAGE R REGULATOR SOLENOID TAIL LO DE ICE SYS OFF HI DE ICE SYS ON 2 STAGE L REGULATOR SOLENOID TAIL PUSH...

Page 811: ...VICEMANUAL EL39 LIGHT PIN 2 USED ON S N 7812004 AND UP PIN 6 USED ON S N 7812004 AND UP PIN 7 USED ON LATER MODELS PIN 6 USED ON LATER MODELS Figure 11 75 Strobe Lights S N 31 7300962 to 31 7812129 Re...

Page 812: ...ee Note 2 SEE POSITION LIGHT SCHEMATIC LIGHT POWER SUPPLY TAIL LIGHT WHITE SEE POSITION NOTES LIGHT SCHEMATIC Conn E2 1 Conn E2 2 Conn Ell Figure 11 76 Strobe Lights S N 31 7912001 and up PIPER NAVAJO...

Page 813: ...IPER NAVAJO SERVICE MANUAL EL16 40179 RIGHT WING BOOT E2C4 COWL FLAP MOTOR CLOSE LEFT COWL LAP BRAKE SOLENOID Figure 11 77 Cowl Flap Motor S N 31 1 to 31 7300841 Revised 10 12 83 ELECTRICAL SYSTEM 4F1...

Page 814: ...SERVICE MANUAL EL15 40179 COWL FLAP SELECTOR SW RIGHT RIGHT COWL FLAP BRAKE SOLENOID COWL FLAP CLOSE LEFT COWL FLAP BRAKE SOLENOID Figure 11 78 Cowl Flap Motor S N 31 7300842 to 31 7612110 Reissued 10...

Page 815: ...AND UP 3 CONN E300A ON S N 31 7912001 AND UP 4 S N 31 7812004 TO S N 31 8112000 DID NOT USE CONNECTORSE204 OR E103 AT WING ROOT i STA 10000 RIGHT WING ROOT E204 RIGHT COWL FLAP BRAKE SOLENOID See Note...

Page 816: ...40179 A FROM STARTER CIRCUIT FLAP SELECTOR SWITCH SHOWN CENTERED NOTE SEEWING FLAP MOTOR AND SOLENOID HEAVY DUTY IF PIPERKIT 763 822 INSTALLED Figure 11 80 Wing Flap Motor and Solenoid S N 31 1 to 31...

Page 817: ...M STARTER CIRCUIT FLAP SELECTOR SWITCH SHOWN CENTERED I NOTE SEEWING FLAP MOTOR AND SOLENOID HEAVY DUTY IF PIPERKIT 763 822 INSTALLED Figure 11 81 Wing Flap Motor and Solenoid S N 31 7300963 to 31 771...

Page 818: ...S 834 DOWN FLAP INDICATOR A FROM STARTER SENDER I F16FD NOTE Used on Serial Nos 31 7712103 to 31 7812129 also used on aircraft that have complied with Service Letter No 834 I Figure 11 82 Wing Flap M...

Page 819: ...2 74249 FLAP MOTOR FLAP CONTROL WAS F35EE FLAP SYSTEM TEST SW 340A CONN E250 CONN RIGHT WING POTENTIOMETER IK Figure 11 83 Wing Flap Motor Calco Flap Modification per Service Kit 764 938L Ref Service...

Page 820: ...ICEMANUAL EL18 49501 20 TO ANNUNCIATOR WIRING I SEE MAIN WIRING FLAP NOTE REFERTO SECTIONV FOR AMPLIFIERSCHEMATIC Figure 11 84 Wing Flap Motor Calco S N 31 7912001 and up Revised 10 12 83 4F22 4F22 EL...

Page 821: ...PIPERNAVAJOSERVICEMANUAL BUS LATERMODELS AMP CIRCUIT PROTECTOR EARLIER MODELS a 025 0 13 RESISTOR 150n Revised 10 12 83 Revised 10 12 83 Figure 11 85 Windshield Wiper 4F23 ELECTRICAL SYSTEM...

Page 822: ...NDER UNI T LEFT WING ROOT ELEVATOR TRIM SENDER UNIT RUDDER TRIM SENDER UNIT PIPER NAVAJO SERVICE MANUAL EL20 40179 AILERON RUDDER INDICATOR INDICATOR Figure 11 86 Trim and Cowl Flap Indicators S N 31...

Page 823: ...AVAJO SERVICE MANUAL EL21 40179 LEFT ELEVATOR TRIM SENDERUNIT AILERON RUDDER INDICATOR INDICATOR ELEVATOR INDICATOR CISEE Figure 11 87 Trim and Cowl Flap Indicators S N 31 7401266 to 31 7612110 Revise...

Page 824: ...Note I PIN ON S N 7812004 AND UP RIGHTrWING RooT LEFT NOTES 1 Conn E204 on S N 31 8112001 and up 2 Conn E103 on S N 31 8112001 and up 3 Used on S N 31 7912086 and up I Figure 11 88 Trim and Cowl Flap...

Page 825: ...EGULATOR PIPERNAVAJOSERVICEMANUAL 40179 W TOGEARSAFETY LEFTWING SWITCH ROOT FILTER COMBUSTION AIR BLOWER RESISTOR CIGAR LIGHTER Figure 11 89 Heater and Cigar Lighter System No Revised 10 12 83 ELECTRI...

Page 826: ...00 PIPER NAVAJO SERVICE MANUAL EL23 40179 LEFT WING ROOT TO GEARSAFETY SWITCH HEATER SWITCH CIGAR LIGHTER RESISTOR Figure 11 90 Heater and Cigar Lighter System No 2 Revised 10 12 83 ELECTRICAL SYSTEM...

Page 827: ...1 STA AND UP 1000 PIPERNAVAJO SERVICE MANUAL EL24 40179 LEFT WING ROOT GEAR SAFETY SWITCH HEATER COMBUSTION AIR BLOWER HEATER FUEL REGULATOR HEATER SWITCH Figure 11 91 Heater and Cigar Lighter S N 31...

Page 828: ...ER START RESET SWITCH TO ANNUNCIATOR PANEL HEATER START RESET RELAY HEATER FUEL REGULATOR INSET 2 TO RADAR ALTIMETER TO HEATER H7CE 16 TERM 4 ON S I S 31 8112045 AND UP L NOTE REFER TO LANDING GEAR SC...

Page 829: ...EL 26 40179 FIEE 20 20 F2EE STA100 00 STALLWARNING LIGHT RED 10WATT STALL WARNING FLASHERUNIT STA 31 00 RIGHTWING ROOT LIFT DETECTOR SWITCH Figure 11 93 Stall Warning S N 31 2 to 31 489 Revised 10 12...

Page 830: ...31 490 TO 31 7512023 STALL WARNING LIGHT RED STALL WARNING HORN STALL WARNING FLASHER UNIT RIGHT WING ROOT STA 81 00 PIN 4 ON 31 1 TO 31 841 PIN 7 ON 31 842 UP LIFT DETECTOR SWITCH Figure 11 94 Stall...

Page 831: ...MANUAL EL26 40179 100 2W STALL WARNING HORN STALL WARNING FLASHER UNIT RIGHT WING ROOT STA 81 00 LIFT DETECTOR SWITCH Figure 11 95 Stall Warning S N 31 7712001 and up all ARB Aircraft Revised 10 12 83...

Page 832: ...R SWITCH See Note 2 STALL WARNING 20 HORN R WING ROOT E205 PLATEHT LIFT DETECTOR LIFT DETECTOR SWITCH NOTES 1 Optional on S N 31 8012001 and up 2 Used on Later Models 3 Conn E205 on S N 31 8112001 and...

Page 833: ...AJO SERVICE MANUAL SEE NOTE BRUSH 25A PROP DE ICE AMMETER H3288 H33BB LEFT ENGINE RIGHT ENGINE NOTE Switching Circuit Breaker used on Models prior to 1979 Figure 11 97 Prop De Ice Revised 10 12 83 4G1...

Page 834: ...PIPER NAVAJO SERVICE MANUAL INTENTIONALLY LEFT BLANK Added 10 12 83 4G12 ELECTRICAL SYSTEM...

Page 835: ...CONN PS103 GOVERNOR CONN PS1002 AUTO MANUAL CONN PSIOI Revised 10 12 83 ELECTRICAL SYSTEM 4G13...

Page 836: ...4G14 INTENTIONALLYLEFTBLANK...

Page 837: ...N AIRCRAFT INCORPORATING DIFFERENT COLORED LIGHTS IN THE ELECTROLUMINESCENT PANELS REFER TO TABLE XI V FOR VALUES OF COMPONENTS USED TO OBTAIN BALANCED LIGHT OUTPUT MAGNETO SWITCHES FUEL PUMP SWITCHES...

Page 838: ...ECTRO LUMINESCENT BLACK WHITE COWL FLAP LIGHTS BLACKWHITE 20 PILOTS RIGHT INSTRUMENTLIGHTS 15 RADIO JUNCTION BOX LUMINESCENT PLACARD AMMETER FUEL QUANTITY GUAGE RIGHT NOTE ON AIRCRAFT INCORPORATING DI...

Page 839: ...ON AIRCRAFT INCORPORATING DIFFERENT COLORED LIGHTS IN THE ELECTROLUMINESCENT PANELS REFER TO TABLE XI V FOR VALUES OF COMPONENTS USED TO OBTAIN BALANCED LIGHT OUTPUT Figure 11 101 Panel Lights S N 31...

Page 840: ...NNE326 CONN R305 RED 5512 GREEN 4 4 2N3053 WHITE WHITE POWER SUPPLY ELECTRO LUMINESCENT RED PILOT S RIGHT INSTRUMENT LIGHTS 15 RADIO JUNCTION BOX LUMINESCENT PLACARD FUEL OUANTITY AMMETER FUEL OUANTIT...

Page 841: ...ETER RIGHT FUEL QUANTITY LEFT MAP LT SWITCH MAP LT PANEL LIGHTS 5 AMP LEFT ENGINE RIGHT ENGINE FUEL PUMP MAGNETO SWITCHES SWITCH OVERHEAD SW PANEL ELS 09 CONN E304 CONN POWER SUPPLY ELECTROLUMINESCENT...

Page 842: ...3 2424 EL105 71167 NOTE WHEN CONNECTIONS RIOOA AND RIOIA ARE USEDREFER TO AVIONICS DRAWINGS COPILOT PANEL LIGHTS PIPER NAVAJO SERVICE MANUAL OVERHEAD MAP LIGHTS LEFT MAP LIGHT OVERHEAD PANEL LIGHTS CO...

Page 843: ...AVAJO SERVICE MANUAL 40179 AL SUPPLY HYDRAULIC POWER PACK SEEDETAIL A OR DETAIL B Figure 11 105 Gear and Safety Solenoid and Gear Indicator Lights S N 31 2 to 31 184 Revised 10 12 83 4H3 ELECTRICALSYS...

Page 844: ...0179 B0 LEFT GEAR DOWN LIMIT SWITCH NOSE LEFT WING ROOT WARNING HORN Figure 11 106 Gear and Safety Solenoid and Gear Indicator Lights S N 31 185 to 31 7300841 Revised 10 12 83 4H5 ELECTRICAL SYSTEM 4H...

Page 845: ...ITE GEAR DOWN DOOR SOLENOID VALVE GEAR DOWN INDICATORS RIGHT NOSE G37EE LEFT WINGROOT CONNECTOR GEAR UP GEAR DOWN DOOR SOLENOID VALVE POWER PACK SERIAL NO OAS2930 1 DETAIL 8 LIGHTS Figure 11 107 Gear...

Page 846: ...MANUAL CONN E436 CONNECTOR 1 Conn E101 on S N 31 8112001 and up 2 Conn E103 on S N 31 8112001 and up Figure 11 108 Gear and Safety Solenoid and Gear Indicator Lights S N 31 7712001 to 31 8212007 Revi...

Page 847: ...S N 31 8212008 and up Added 10 12 83 ELECTRICAL SYSTEM 4H11 4H12...

Page 848: ...RIGHTWING ROOT LWEE LWE E Q eI LEFT ALTERNATOR RIGHT Figure 11 110 Alternator Delco Remy 50 Amp Installation Revised 10 12 83 ELECTRICAL SYSTEM 4H13 4H14...

Page 849: ...I Figure 11 11 Alternator Prestolite 70 Amp Installation ELECTRICAL SYSTEM Revised 10 12 83 4H15 4H16...

Page 850: ...MV 16 ML21 16 ML22 O RIGHT ALTERNATOR 90 AMP 90 AMP RIGHT VOLTAGE REGULATOR 5AMP LEFT VOLTAGE REGULATOR 5 AMP I Figure 11 112 Alternator Prestolite70 Amp Installation S N 31 793 to 31 7612110 Earlier...

Page 851: ...1 Conn E102 on S N 31 8112001 and up 2 Conn E205 on S N 31 8112001 and up Figure 11 113 Alternator Prestolite 70 Amp Installation S N 31 7712001 and up Later Models Revised 10 12 83 ELECTRCAL SYSTEM E...

Page 852: ...ERVICE MANUAL EL 10 40179 RIGHTSTARTER RIGHTWING ROOT TO MASTER CONTACTOR SOLENOID LEFTSTARTER SWITCH LEFT MAGNETO SWITCHES TOMAP FUEL GAUGES ANDAMMETERLIGHTS TOFUEL PUMP JUMPER SWITCHES S N 31 2 to 3...

Page 853: ...ESSURE SWITCH Figure 11 115 Starter with Magnetos and Hour Meter S N 31 46 31 55 31 86 and up Earlier Models Revised 10 12 83 4H23 4H24 ELECTRICAL SYSTEM...

Page 854: ...EL111 40179 See Note FUEL LEFT ENGINE MAGNETOS NOTES Revised 10 12 83 411 ELECTRICALSYSTEM 412...

Page 855: ...E OVERHEADPANEL AMMETER SHUNT SWITCH STER CH FASTEN SEATBELT LIGHTS USEDn LEFT SIDE READINGLIGHTS FORWARD LIGHT REARENTRANCE SWITCH FWDCABIN DOORLOCK SWITCH DOME NO SMOKING LIGHTS L43EE 20 LIGHTSSWITC...

Page 856: ...I Figure 11 118 Cabin and Door Ajar Lights S N 31 33 to 31 7300854 Revised 10 12 83 ELECTRICAL SYSTEM 415 416...

Page 857: ...Revised 10 12 83 417 4I8 ELECTRICAL SYSTEM...

Page 858: ...PIPER NAVAJO SERVICE MANUAL UETER SHUNT PC C CMT CONN REAR EXIT LIGHT REAR ENTRANCE SWITCH I Figure 11 120 Cabin and Door Ajar Lights S N 31 7712001 to 31 7812129 Revised 10 12 83 ELECTRICAL SYSTEM 41...

Page 859: ...HEAD TEMP PROBE PIPER NAVAJOSERVICE MANUAL E307 LEFTSIDEOVERHEADPANEL FUEL QUANTITY GAUGES 12W LEFT WING ROOT FLIGHTWING ROOT Figure 11 121 Oil Temperatureand Fuel QuantityIndicator EarlyModels ELECTR...

Page 860: ...CONN PIPER NAVAJO SERVICE MANUAL FUELSENDERS WING NOTES Figure 11 122 Oil Temperature and Fuel Quantity Indicator Later Models Revised 2 18 94 ELECTRICAL SYSTEM 4113 4114...

Page 861: ...NNUNCIATOR CONTROLLER HEATER FAIL LEFT ALTERNATOR INOP SEE FIG 2 NOTES 1 Not usedon S N 31 8012001 and up 2 Usedon S N 31 8012001 and up 3 Usedon S N 31 8112001 and up Figure 11 123 Annunciator Contro...

Page 862: ...UNSAFE EL61 40179 DZ CONN E 303 ANNUNICATOR PANEL 6 5 AMP N PIPER NAVAJO SERVICE MANUAL ANNUNCIATOR CONTROLLER CONN 125 6 9 10 7 6 3 4 33 35 40 42 E430 125 69 107834 33354042 13 13 NOSE BAG DOOR AJAR...

Page 863: ...EL29 I Figure 11 125 Fuel Boost Pumps and Fuel S N 31 1 to 31 7712103 Flow Warning ELECTRICAL SYSTEM Revised 10 12 83 4119 4I20...

Page 864: ...ANDING GEAR SYSTEM AND OIL AND CYL HD TEMP INDICATORS GEAR OIL TEMR 8 FUEL QUANTITY INDICATOR 5 AMP LEFT FUEL PUMP 5 AMP RIGHT FUEL PUMP 5 AMP LEFT FUEL PUMP RIGHT FUEL PUMP RIGHT LOW FUEL SENSOR Figu...

Page 865: ...NAVAJO SERVICE MANUAL EL41 71096 E309 MODIFIED PER SERVICE BULLETIN 704 Figure 11 127 Environmental System with without Air Conditioning S N 31 8012001 to 31 8012087 Revised 10 12 83 ELECTRICAL SYSTE...

Page 866: ...1096 CONN E309 NACELLE SCOOP MOTOR RIGHT GEAR SAFETY SWITCH MODIFIED PER SERVICE BULLETIN 704 I TO CONN E309 Figure 11 128 Environmental System with Air Conditioning S N 31 8012088 to 31 8212007 Revis...

Page 867: ...PIPER NAVAJO SERVICE MANUAL FUEL SELECTOR PANEL LIGHTS Figure 11 129 Cabin Lights S N 31 7912001 to 31 8012092 Revised 10 12 83 ELECTRICAL SYSTEM 4124...

Page 868: ...L L3AEF PIPER NAVAJO SERVICE MANUAL 51 79 SEE CHIMES E300B E3C29 LEFT SIDE READING LIGHTS L34 D FLIGHT MAP LIGHT Figure 11 130 Cabin Lights S N 31 8112001 and up Revised 10 12 83 4J1 ELECTRICAL SYSTEM...

Page 869: ...R SOLENOIDS TO AMMETER SHUNT BAGGAGE COMPARTMENT FLIGHT TO TO WHITE ANNUN PANEL BAGGAGE DOOR LOCK SWITCHES CONN E312A I Figure 11 131 Baggage Door Ajar Switches and Courtesy Lights S N 31 7912001 to 3...

Page 870: ...MASTER CONTACTOR FUSED AMP REAR ENTRANCE LIGHT SWITCH DOME LT SWITCH CONN E313 REAR ENTRANCE LIGHT NOSE BAGGAGE DOOR LOCK SWITCH PIN 55 ANNUNCIATOR CONTROLLER DOME LIGHT Figure 11 132 Cabin Divider B...

Page 871: ...CE MANUAL EL 63 74197 2 COURTESY LIGHT TIMER TO DIVIDER SWITCH E316 AFT DOME LIGHT DOME LIGHT SWITCH EXIT LIGHT SWITCH Figure 11 133 Courtesy Light Timer and Aft Dome Lights S N 31 8312001 and up Adde...

Page 872: ...OCK SWITCH 20 20 CABIN DOOR AJAR SWITCH 20 20 20 CABIN DOOR AJAR SWITCH Figure 11 134 Cabin Door Ajar Switches S N 31 7912001 and up EL53 72619 SEE CABIN LIGHTS 20 L33A 75A CABIN LTS CHIMES SPEAKER SE...

Page 873: ...O SERVICE MANUAL EL32 40179 LIGHT LEFT RECOGNITION LIGHT Figure 11 136 Inflight Identification Light System S N 31 7812001 to 31 7812129 CONN RECOG BEACON CONN E301A See Note I RIGHT RECOG LIGHT LEFT...

Page 874: ...Switch Circuit EL58 42637 25A WINDSHIELD HEATING ELEMENTS 1 5 TO 2 0 OHMS AT HEATING ELEMENTS TIMER HEAT 125 AT 60 F 1 AT SENSOR SENSOR 140 AT 110 F 100F TO 95 F WILL OPEN UP SENSOR S N 31 8112001 to...

Page 875: ...on earlier models 2 Model No 4389 black wire to power A and blue wire to ground Replacement Motor Model No 1163 00 1 orange wire to power A and black wire to ground I I Figure 11 140 Ground Vent Fan S...

Page 876: ...TER 5 AMP 7 5 AMP ON S N 31 7912001 a UP Figure 11 142 Cigar Lighter System S N 31 7712074 to 31 8012045 EL32 40179 CONN E304A UNIT 7 5A REFRESHMENT Figure 11 143 Refreshment Unit System S N 31 771200...

Page 877: ...OMM A TO AUDIO PIPER NAVAJO SERVICE MANUAL RECOG IDENT 5 AMP SW S N 31 8112046 8 UP BEACON FLASHER BEACON HOLDING COIL 28V FROM COMM I C B FROM BATTERY FROM AUDIO C B FROM BATTERY SWITCH I Figure 11 1...

Page 878: ...03 E303 LATER MODELS IN PEDESTAL CIGAR LIGHTER PEDESTAL CIGAR ONLY FOR PA 31 325 S LIGHTER ONLY WITH S N S 31 8312001 AND UP LEFT CIGAR LIGHTER RIGHT CIGAR LIGHTER CR6 RG CI GA Figure 11 146 Cigar Lig...

Page 879: ...I Figure 11 147 E L T C C C EL 59 40179 R499 NARCO ELT I Figure 11 148 E L T Narco Revised 10 12 83 ELECTRICAL SYSTEM 4J12...

Page 880: ...AJO SERVICE MANUAL EL 60 71096 CONN E309 NACELLE SCOOP MOTOR RIGHT GEAR SAFETY SWITCH SAMP Figure 11 149 Environmental System with Air Conditioning S N 31 8212008 and up ELECTRICAL SYSTEM 4J13 Revised...

Page 881: ...AVAJO SERVICE MANUAL TEMPERATURE CONTROL p PRESSURE SWITCH FAN RED RED LEFT RIGHT CIRCULATING CIRCULATING FAN FAN Figure 11 150 Environmental System with Air Conditioning Early Models Revised 2 18 94...

Page 882: ...PIPER NAVAJO SERVICE MANUAL GRID4J15THRU4L24 INTENTIONALLY LEFT BLANK...

Page 883: ...AIRPLANE SERVICE MANUAL CARD 5OF5 PA 31 PA 31 300 PA 31 325 PIPER AIRCRAFT CORPORATION PART NUMBER 753704 5A1...

Page 884: ...ified byrevisionlines Revisions to service manual 753 704 issued October 1 1966 are as follows Revisions Publication Date Aerofiche Card Effectivity ORG661001 CR720707 CR791012 PR800923 PR810311 P R8...

Page 885: ...RAULIC SYSTEM 2A9 VII LANDING GEAR AND BRAKE SYSTEM 2E4 VIII POWER PLANT PA 31 Turbo 2H6 VIIIA POWER PLANT PA 31 300 2K8 VIIIB POWER PLANT PA 31 325 2K18 AEROFICHE CARD NO 3 IX FUEL SYSTEM 3A8 X INSTR...

Page 886: ...o I 5B18 13 14 Primary Power Circuit 39D59 Heater System No 2 B 5B1S 13 15 Primary Power Circuit B39D59 D39D39 Heater System 5B19 13 16 Starting Power Circuit 39D59 Heater System No I 5B20 13 17 Start...

Page 887: ...ramShowingCycleSequence Three Blades 5E19 14 12 TypicalUseof DialIndicator 5E22 14 13 Centering of Brushes on Slip Rings 5E22 14 14 WiringSchematic ElectricPropellerDeicingSystem Two Blades 5E24 14 15...

Page 888: ...Pulse Generator Computer Assembly Fabricated Test Box Electrical Schematic Strobe Sensor Internal Wiring Test Unit Strobe Sensor Simulator Patch Cable and Test Terminal Pulse Generator Simulator Sync...

Page 889: ...ubleshooting Chart Propeller Deicer System Temperature Pressure Chart Aluminum Tubing Torque Compressor Oil Charge Belt Tensions TIO 540 A2C Engine Air Velocity Chart Troubleshooting Chart Air Conditi...

Page 890: ...5A8 INTENTIONALLYLEFTBLANK...

Page 891: ...ctivation Emergency Locator Transmitter Communications Components Corp Description Battery Removal and Installation Pilot s Remote Switch Testing Emergency Locator Transmitter Testing Pilot s Remote S...

Page 892: ...fiche Subject Figure Grid No Garrett ELT Schematic 12 2 5A17 Communications Components ELT Schematic Early 12 3 5A19 Communications Components ELT Schematics Later Models 12 4 5A20 EmergencyLocator Tr...

Page 893: ...eath the dorsalfin between sta 304 75 and sta 317 00 a Remove the accesspanel on the dorsal fin between sta 296 00 and sta 317 75 by removingthe screws b Set the ON ARM OFFswitchon the transmitter to...

Page 894: ...the pilot s remote switch harnessto the transmitter On SerialNos 31 7300979 up p Connect the antenna coax to the transmitter q Install the access panel on the dorsal fin between sta 296 00 and 317 75...

Page 895: ...adiated duringtesting If a shielded enclosure is not available testing may be performedin accordancewith the followingprocedures 1 Test should be no longerthan three audio sweeps 2 If the antenna is r...

Page 896: ...ontrol tower During cold weather there may be a slightdelay before transmissionoccurs d A transmitter which is functioning properly should emit a characteristic downward swept tone e When the test is...

Page 897: ...TION Under normal conditions the remote switchmust beset to ARM 12 7 TESTINGPILOT SREMOTESWITCH Beforeperforming any operational test of the pilot s remote switch the followingprecautions should be ob...

Page 898: ...ha remoteswitch For portableuse the ELT can beeasilyremovedfrom itsmountingin the aircraft FAA regulationsrequire that the batterybereplaced 1 on or before the expiration date on the unit 2 ifthe tran...

Page 899: ...NAVAJOSERVICEMANUAL C4 ELT SELECTOR TRANSMITTER I 3 3 5 2 2 6 6 YELLOWCASE 3 POSITION SWITCH C464 TRANSMTTER CONN YELLOWORWHITE CANADA CASE 2 POSITION SWITCH Figure 12 2 Garrett ELT Schematic Revised...

Page 900: ...the event the automatic feature was not triggeredby impact move the switchupward to the ONposition and leaveit in that position as longas transmissionis desired 12 13 TESTING EMERGENCY LOCATOR TRANSM...

Page 901: ...llowingmanner a Improper switchselectionis corrected by rotating the switch to the OFF position andthen to the ARMposition b If the transmitter is inadvertently activated through impact deactivate by...

Page 902: ...OTE TOSERIAL NOS 7812127 2782 CONN R498 POSITION LIGHTS 5 AMP I NOTE SERIAL NOS 7812128TO 7912064 2792 TO POSITIONLIGHTSBUS NOTE SERIAL NOS 7912065 ANDUP Figure 12 4 Communications Components ELT Sche...

Page 903: ...JO SERVICE MANUAL 2790 NOTE SERIALNOS 7812128 TO 7912064 2790 T CONN R499 E L T I REMOTE NOTE SERIALNOS 7912065 ANDUP Figure 12 5 Emergency Locator Transmitter Schematic Narco Reissued 10 12 79 ELECTR...

Page 904: ...wires and replace the four screws If the four holes do not line up rotate the battery pack 180 and reinsert j Slide the portable antenna back into the stowed position k Place transmitter into its moun...

Page 905: ...E ANTENNA EXTENSION TAB SET ON OFF ARM SWITCH TO ON ANTENNA POPSOUT OF CHANNEL AND DOWN PIN STOP VIEW C TO EXTEND TO FULL LENGTH Figure 12 6 ELT Portable Folding Antenna Narco CONTACT PORTABLE ANTENNA...

Page 906: ...PIPERNAVAJOSERVICEMANUAL 1243 ANTENNA CONNECTION ANTENNA CONNECTION Figure 12 8 Avionic Antenna Locations Reissued 10 12 79 ELECTRONICS 5A24...

Page 907: ...ollins General Aviation Division Rockwell International Cedar Rapids Iowa 52406 319 395 3625 Telex 464 421 Edo Corporation Avionics Division Box 610 Municipal Airport Mineral Wells Texas 76067 817 325...

Page 908: ...out on the Master Parts Price List Aerofiche published monthly by Piper Consult the aircrafts parts catalog for replacement parts NAME AutoControl I II AltiMatic I II AutoControl III and AltiMatic III...

Page 909: ...Heater 13 20 Installation of Heater 13 21 Heater ElectricalSystemChecks 13 22 ElectricalContinuity Check 13 23 Vent BlowerPowerCircuitCheck 13 24 Heater PowerCircuitCheck 13 25 Maintenanceand Repairs...

Page 910: ...13 47 Reassembly 5C17 13 48 Reassemblyof CombustionAir BlowerAssembly 5D5 13 49 Test Procedure 5D9 13 50 General Information 5D9 13 51 Equipment Required 5D9 13 52 OperationalTest 5D1 13 53 Cabin Exh...

Page 911: ...air into the cabin through individual vents over each seat Each vent is adjustable for the desiredairflow A cabin exhaust outlet is located in the raised floor panel of the aft cabin area The exhaust...

Page 912: ...AIR OUTLET COCKPIT 10 HEAT FRESH AIR OUTLET 11 CONTROL FRESH AIR RIGHT 12 CONTROL FRESH AIR LEFT 13 FRESH AIR OUTLET CABIN 14 SCOOP FRESH AIR 15 VENT OUTLET CABIN 16 SCOOP CABIN EXHAUST PIPERNAVAJOSE...

Page 913: ...IR CONTROL BOX 9 FRESH AIR OUTLET COCKPIT 10 HEAT FRESH AIR OUTLET 11 CONTROL FRESH AIR RIGHT 12 CONTROL FRESH AIR LEFT 13 FRESH AIR OUTLET CABIN 14 SCOOP FRESH AIR 15 VENT OUTLET CABIN 16 SCOOP CABIN...

Page 914: ...HARNESS ASSEMBLY 6 COMBUSTION AIR BLOWER 7 SPARK PLUG 8 VENTILATING AIR INTAKE 9 VENTILATING AIR BLOWER 10 COMBUSTION AIR INTAKE TUBE 11 TERMINAL STRIP 12 LIMIT SWITCH 13 CYCLING SWITCH 14 HEATER EXH...

Page 915: ...S ASSEMBLY 7 COMBUSTION AIR BLOWER 8 SPARK PLUG 9 VENTILATING AIR BLOWER 10 VENTILATING AIR INTAKE 11 COMBUSTION AIR BLOWER PRESSURE SWITCH 12 COMBUSTION AIR INTAKE TUBE 13 TERMINAL STRIP 14 LIMIT SWI...

Page 916: ...G 9 VENTILATING AIR BLOWER 10 VENTILATING AIR INTAKE 11 COMBUSTION AIR BLOWER PRESSURESWITCH 12 COMBUSTION AIR INTAKE TUBE 13 TERMINAL STRIP 14 UNIT SWITCH 15 CYCLING SWITCH 16 HEATER EXHAUST PIPE 17...

Page 917: ...enters the combustion chamber tangent to its surface and imparts a whirling or spinning action to the air This produces a whirling flame that is stable and sustains combustion under the most adverse c...

Page 918: ...s incorporated in the heater system to shut off the combustion air blowerwheneverthere is enough ram air to operate the heater without the blower Thisswitch is set to shut off the blowerat 5 3 inches...

Page 919: ...ical power to all heater equipment and controls Whenthis switch is in the OFF position the entire heater systemis inoperative This switch has a FANposition whichpermits use of the ventilatingair blowe...

Page 920: ...0 WiringSchematic 39D59Heater SystemNo 1 C457 FUEL 3 104 16 SOLENOID RADIO COMB FILTER AIR 05 16 IGNITION UNIT OVERHEAT SPARK SWITCH PLUG 107 16 107 16 PRESSURE SWITCH RADIO NOISE FILTER COMBUSTION AI...

Page 921: ...h to override the duct stat at the very last movement of the duct stat arm toward the high position d To stop heater operation turn off the HEATER SWITCH e It is desirable to operate the fan several m...

Page 922: ...heating season whichever comes first remove the heater from the airplanefor complete inspectionof heater parts and any necessaryrepairsandreplacementsmade prior to reassembly 13 18 MAINTENANCESERVICE...

Page 923: ...ound in the ElectricalSystem Diagram Section XI k Operate the heater longenoughto determinethat the unit is operatingproperly 1 Install the accesspanelsin the baggagecompartment and at the sideof the...

Page 924: ...TER AIR BLOWER AIRCRAFT CONTROL CIRCUIT Figure 13 13 PrimaryPowerCircuit 39D59 Heater SystemNo 1 VENT AIR TO LANDING GEAR TERMINAL BLOWER UP LIGHT r STRIP Figure 13 14 PrimaryPowerCircuit 39D59 Heater...

Page 925: ...tswitch 3 From terminal No 3 of the overheat switch through the combustion air pressureswitchto terminal No 2 of the heaterterminal strip 4 From terminal No 2 of the heater terminal strip through the...

Page 926: ...AIR BLOWER 39D59 Heater System No 1 Figure 13 16 Starting Power Circuit C460 I FILTER COMBUSTION AIRCRAFT CONTROL CIRCUIT AIR BLOWER Figure 13 17 Starting Power Circuit 39D59 Heater System No 2 HEATI...

Page 927: ...periodic maintenance 13 26 COMBUSTION AIR BLOWER a Removal 1 Disconnectwireat quick disconnectterminal 2 Disconnectthe inlet tubing from the inlet air adapter 3 Loosenthe clampsthat hold the combusti...

Page 928: ...the clamp or installingthe sheet metal attaching screws 5 Connect the wire lead to No 1terminal on terminal strip 6 Check motor operation By disconnectingthe wire at the No 3 terminal on heater termin...

Page 929: ...re the installation of the fuelnozzle MethodIII is suitable for checkingthe gap through the spark plugwellwhen the heater is not disassembled Method I 10D22 sparkplugs only 1 On the 10D22 spark plugs...

Page 930: ...COMBUSTION HEAD ASSEMBLY 7 MEASURE 8 GASKET 7 6 4 447 6 00 SLIP FIT 255 DIA HOLE I UNDER CUT 010 MARK WITH BLACK PAINT 18 MM THREAD STOCK 3 444 MATERIAL CAN BE SAETYPE 303 321 OR 347 ST ST OR ALUMINU...

Page 931: ...smalldrop of AviationPermatex or similar material may be used on the gasketto help hold it to the spark plugshellduringinstallation 3 Screw the spark plug into the heater with a deep socket wrench Tig...

Page 932: ...ot require complete overhaul The following test willindicate whether or not the unit is operational andwhether the vibrator should be replaced before reinstallation in the aircraft The followingequipm...

Page 933: ...5C3 INTENTIONALLY LEFT BLANK...

Page 934: ...may require a slightback and forthmovement to remove it from the unit A pieceof maskingor friction tape around the exposedportion of the vibrator will help to gripthe vibrator for removal c Install th...

Page 935: ...the bracket and remove the switchfromthe airplane b Installation 1 Install the switch onto the bracket at bulkhead Sta 59 beingsure that the adjustment side faces to the outboard surfaceand the outle...

Page 936: ...vary the inlet pressure from 10 to 50 psi The outlet pressure should remainbetween 7 0 to 8 0 psi 6 With the inlet pressureof 50 3 psi de energizeand energizethe solenoidat least twice The outlet pres...

Page 937: ...itch connect the two wiresfrom the micro switchto the duct switch terminals 3 Set the temperature selector shaft at the high stop Then carefully place the control lever arm on the shaft at the high po...

Page 938: ...out the overheat limit switch 7 and spacergaskets 8 8 Remove the two screws 61 lock washers 43 and plain washers 65 and lift out the cyclingswitch 9 9 Remove the four screws 64 and lock washers 58 to...

Page 939: ...lbow adapter 23 off the combustion air inlet tube 2 Disconnect and remove electrical wiring and individual wires from the variouscomponents on the heater If wires appear to be in good condition it may...

Page 940: ...ng 12 with the motor bracket assembly 19 and blower fan 17 attached Loosen the set screwin the blowerfan 17 and slide it off the end of the motor shaft The ground bracket 44 and rubber fasteners 43 ma...

Page 941: ...ne hours The slightscalingcondition willappear to bemottled and a small accumulation of blue gray powder may be present on the surface in certain areas This condition does not require replacement of c...

Page 942: ...ore all cable ties and clamps If heater controls were operating properly at the time of removal reinstallthem c Inspect all hard parts consisting of bolts screws nuts washers and lock washers Replace...

Page 943: ...step n Inspect the blowerwheelfor broken or bent vanesand replaceit for either condition 13 45 TESTING The followingtests should be performedas outlined in the suceedingparagraphs a Checkventilatingai...

Page 944: ...bustion tube assembly 5 Submerge the combustion tube assemblyin water for several minutes while watching for bubbleswhichwould indicateleaks No air leakageis permittedfrom thecombustion tubeassembly N...

Page 945: ...6 2 Connect an ohmmeter across the switch terminals to determine the exact instant of switch opening 3 Apply air pressure slowly allowing it to build up from zero The switchcontacts should open at 5 0...

Page 946: ...Connect a switch in the line to open and closethe solenoid when desired 3 With the switchclosed solenoidvalveenergized observethe fuelspray pattern It should be conicalin shape with evendispersionin...

Page 947: ...onnectionis made at this point 4 Insert this assemblyinto the blowerhousing 39 and position it so the longscrew 33 is in alignment with the gap on the inner ring of the motor bracket assembly 32 This...

Page 948: ...se a new gasket 15 and connect the solenoidground wireunder one of these screws Makesure a good electricalground connection exists at this point 12 Using a new spark plug gasket install the spark plug...

Page 949: ...d bracket 44 and three new fasteners 43 Insert this assemblyinto the blowerhousing 12 3 Makesure all wires are routed and grommeted as they were prior to disassemblyand then securethe assemblyin housi...

Page 950: ...fuel shroud 9 gasket 29 washer 41 on the fuel fitting and install the nut 38 finger tight Inserta 3 4 inch open endwrenchinside the jacket and hold the fuel tube fitting while tightening the nut 38 wi...

Page 951: ...5C21 INTENTIONALLY LEFT BLANK...

Page 952: ...12 79 39 HOUSING BLOWER 40 FAN VENT AIR BLOWER 41 CAPACITOR ASSEMBLY 42 SCREW ANS154R6 43 WASHER AN936 A 44 MOTOR ASSEMBLY VENT AIR BLOWER 45 CAP BRUSH ASSEMBLY 46 BRUSH ASSEMBLY MOTOR 47 TERMINAL 48...

Page 953: ...PIPER NAVAJOSERVICEMANUAL 1248 Figure 13 27 Heater Assembly39D59 SystemNo 1 Reissued 10 12 79 HEATINGANDVENTILATINGSYSTEM 5C23...

Page 954: ...79 43 WASHER AN936AS 44 MOTOR ASSEMBLY VENT AIR BLOWER 45 CAP BRUSH ASSEMBLY 46 BRUSH ASSEMBLY MOTOR 47 TERMINAL 48 FUEL FEED NOZZLE HOLDER AND VALVE ASSEMBLY 49 COVER SOLENOID 50 SCREW AN515 8R6 51 W...

Page 955: ...Figure 13 28 HeaterAssembly39D59 SystemNo 2 5D1 HEATINGANDVENTILATINGSYSTEM 5D1 PIPERNAVAJOSERVICEMANUAL 1249 Reissued 10 12 79...

Page 956: ...BLY MOTOR 20 FASTENER 21 NOZZLE FUEL 22 SOLENOID ASSEMBLY FUEL 23 ADAPTER 24 SWITCH CYCLING 25 SWITCH LIMIT 26 SWITCH PRESSURE 27 GASKET LIMIT 28 GASKET NOZZLE HOLDER 29 GASKET 30 GASKET 31 GASKET ASB...

Page 957: ...PIPERNAVAJOSERVICEMANUAL 49 Figure 13 29 Exploded Viewof Heater AssemblyPart No 755 257 28 Volt Reissued 10 12 79 HEATINGANDVENTILATINGSYSTEM 5D3...

Page 958: ...5D4 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 959: ...wer wheel by hand for clearancecheck then apply proper voltage to run motor and recheckfor proper clearance 7 Slide the blower outlet adapter 5 on the blower housing outlet 8 and install the two screw...

Page 960: ...R AN936A6 18 SCREW 19 SCREW AN520 10R 10 20 NUT MS20364 1032A 21 SCREW 22 WASHER AN936 AS 23 NUT AN345 10 24 WASHER AN936B10 25 WASHER AN960 10L 26 SLEEVE HIGH TEMPERATURE 27 STRAP CABLE 28 TUBE HOUSI...

Page 961: ...19 SCREW AN520 10R10 20 NUT MS20364 1032A 21 SCREW 22 WASHER AN936 A8 23 NUT AN345 10 24 WASHER AN936B 10 25 WASHER AN960 10L 26 SLEEVE HIGH TEMPERATURE 27 STRAP CABLE 28 TUBE HOUSING OUTLET 29 SWITC...

Page 962: ...LOCK 13 SCREW 14 SCREW 15 NUT 16 SCREW 17 WASHER 18 STRAP CABLE 19 SET SCREW 20 HOUSING BLOWER OUTER 21 HOUSING BLOWER INNER 22 SCREW 23 NUT 24 WASHER 25 SCREW 26 TUBE HOUSING OUTLET 27 SWITCH ASSEMBL...

Page 963: ...be chosen where exhaust can be dispelled Do not add anexcessiveextension to the heater exhaust b A source of fuel capableof beingregulatedat 7 5 5 psi c The combustion air blowerto be used with the he...

Page 964: ...WIRING REQUIRED FOR BENCH TEST HEATERWIRING Figure13 34 WiringConnectionsfor 39D59 Heater Operation Test SystemNo 1 VENT AIR TERMINAL BLOWER STRIP RADIO NOISE I Figure13 35 WiringConnectionsfor 39D59...

Page 965: ...ouble before proceedingwith the test f Connect a voltmeter from open side of combustion air pressure switch terminal to ground to determine if the switch is closed which would be indicated by a full v...

Page 966: ...atswitch shuts off the heater It should open at between 300 F and 400 F This is also a function of ambient temperature and airflow After the switch shuts off remove ventilatingair restriction and push...

Page 967: ...osition vent fan on mounting bracket and secure with appropriate screws b Reconnect electrical connector and ground wire c Replace center floor panel and secure withappropriate screws d Position floor...

Page 968: ...Para graph 13 37 SeeNote NOTE When making the fuel pressure check be sure fuel is flowing through the nozzle Turn the adjusting screwclockwiseto increase fuel pressure and counterclockwiseto decrease...

Page 969: ...o low voltageand correct it If switchis defective replaceit Refer to Paragraph13 36 Cyclingswitch open Duct switch open Replaceif defective Refer to Paragraph 13 34 Operate control to seeif switchwill...

Page 970: ...tor housing Defectiveradio noise filter Faulty or burned out motor Tightenground screw Besure that any metal preservativehas been removedfor a good ground connection Replacemotor brushes Refer to Para...

Page 971: ...motor Highvoltageleak in lead betweenignition assemblyand spark plug Inoperativeignition assembly Restrictionin fuel nozzle orifice Nozzleloosein retain er or improper spray angle tion r r Tighten th...

Page 972: ...ativecycling switch Low voltage Adjust or replaceswitch Refer to Paragraph13 36 Replaceswitch Refer to Paragraphs13 34and 13 52 Adjust or replacethe switch Refer to Para graphs 13 34and 13 52 Attach e...

Page 973: ...5D19THRU 5D24 INTENTIONALLY LEFT BLANK...

Page 974: ...5E9 14 14 Removal of Pressure Gauge 5E9 14 15 Installation of Pressure Gauge 5E9 14 16 Removal of Outlets 5E9 14 17 Installation of Outlets 5E9 14 18 Purging Oxygen System 5E9 14 19 Cleaning of Face...

Page 975: ...Test 5F15 14 52 Aft Cabin Heater 5F15 14 53 Removal of Heater 5F24 14 54 Installation of Heater 5F24 14 55 Electric Fuel Pump 5F24 14 56 Removal of Pump 5F24 14 57 Disassembly of Pump 5F24 14 58 Clean...

Page 976: ...owerMotor AssemblyRemoval 5H5 14 99 Blowerand MotorAssemblyInstallation 5H6 14 100 Air ConditioningModule 5H6 14 101 ModuleRemoval 5H6 14 102 ModuleInstallation 5H6 14 102a Air Conditioning System Air...

Page 977: ...est 5123 14 134 Pneumatic SystemAdjustment 5123 14 135 Component Maintenanceand Replacement 5123 14 136 Filter Replacement 5123 14 137 ControlValves 5J 14 138 Timer 5J1 14 139 Inspections 5J1 14 140 G...

Page 978: ...theoutletsandmaskswhenever thecontrolknobis pulledtothe ONposition Each outlethas a spring loadedvalvewhichpreventsthe flow of oxygenuntil a maskhose is engagedin the outlet 14 4 TROUBLESHOOTING A tr...

Page 979: ...lastFAA inspection and test c If cylinder is completely empty it must be completely disassembledand inspected in an FAA approvedfacility before recharging d Any linesthat are defectiveshould bereplace...

Page 980: ...e baggagecompart ment and the cylinderis removedthrough the outer accessopening Theaft cylinderlocatedintheaftfuselage just aft of the passengercompartment is removed by removingthe accesspanel on the...

Page 981: ...ER 2 REGULATOR 3 FILTER VALVE 4 PRESSURE GAUGE 5 CONTROL KNOB 6 OUTLETS AND MASK STORAGE 7 LOW PRESSURE LINES 8 HIGH PRESSURE LINES Figure 14 1 TypicalOxygen SystemInstallation FWD Mounted Cylinder Re...

Page 982: ...the connector at the rear of the gauge 14 16 REMOVALOF OUTLETS a Usinga suitablespannerwrench remove the outer half of the outlet b Removethe screwsholding the trim panel and removethe panel c The out...

Page 983: ...otsmaskscan be cleanedas follows a Removethe microphone fromthe mask b Removethe sponge rubber discs from the maskturrents Do not use soap to cleanspongerubber discs as this would deteriorate the rubb...

Page 984: ...MS3367 cable ties Position slit away from wires etc PIPER NAVAJO SERVICE MANUAL 1 8 Min SKETCH A SKETCHB Grommet Correct Incorrect SKETCHD Clamp wire bundle every 2 at cross overs Figure 14 lb Oxygen...

Page 985: ...nd check for leaks Pressure gauge defec tive Replace pressure gauge Pressure indication normal but no oxygen flowing Offensive odors in oxygen Oxygen cylinder reg ulator assembly defective Cylinder pr...

Page 986: ...the de Icercemented to the propellerhas a dull finishwhereasthe air side finishis glossy Each De Icerhas a separatelead for the inboard and outboard heater and a third lead whichis a common ground The...

Page 987: ...ICER 2 SLIP RING ASSEMBLY 3 BRUSH BLOCK ASSEMBLY 4 WIRING 5 AMMETER 6 SWITCH CIRCUIT BREAKER 7 POWER SOURCE 8 SHUNT 9 TIMER Figure 14 2 Two Bladed Propeller Electric De Icer Installation Reissued 10...

Page 988: ...2 SLIP RING ASSEMBLY 3 BRUSH BLOCK ASSEMBLY 4 WIRING 5 AMMETER 6 SWITCH CIRCUIT BREAKER 7 POWER SOURCE 8 SHUNT 9 TIMER 8 Figure 14 3 Reissued 10 12 79 Three Bladed Propeller Electric De Icer Installa...

Page 989: ...LIP RINGS i PHASE Figure 14 4 Electrical Diagram Showing Cycle Sequence Two Blades DEICER VOLT SYSTEM PIN G FORN VOLT SYSTEM I BRUSHBLOCK PHASE 2 TOPOWER SOURCE PHASE 2 Figure 14 5 Electrical Diagram...

Page 990: ...MANUAL TO POWER SOURCE Figure 14 6 Electrical Diagram Showing Cycle Sequence Two Blades DE ICER TO POWERSOURCE Figure 14 7 Electrical Diagram Showing Cycle Sequence Two Blades Reissued 10 12 79 ACCESS...

Page 991: ...ER NAVAJOSERVICE MANUAL Figure 14 8 Electrical Diagram Showing Cycle Sequence Three Blades MetI Figure 14 9 Electrical Diagram Showing Cycle Sequence Three Blades Reissued 10 12 79 5E18 ACCESSORIES AN...

Page 992: ...SERVICE MANUAL 1254C Figure 14 10 Electrical Diagram Showing Cycle Sequence Three Blades 1254D Figure 14 11 Electrical Diagram Showing Cycle Sequence Three Blades Reissued 10 12 79 ACCESSORIES ANDUTIL...

Page 993: ...reading on the ammeteralwaysindicatesa power leadis shorted to ground Thus when trouble of this nature is found it is vital that the groundedpower lead belocated and corrected c A considerablenumber o...

Page 994: ...WebbInc CJ10 LimekilnPike Dresher PA 19025 2 If uneven wear is found or if wobble is noticed set up dial indicator as shownin Figure 14 12to check alignmentof slipringsto propellershaft g Brush Block...

Page 995: ...G GEAR WITH SLIPRING ASSEMBLY Figure 14 12 Typical Use of Dial Indicator 394 BRUSH LOCATED INCORRECTLY ON SLIP RING NOTCH WORNIN BRUSH DUE TO MISALIGNMENT Figure 14 13 Centering of Brushes on Slip Rin...

Page 996: ...provided c Reassemblethe brush block to the mounting brackets utilizing hardware removedin Paragraph 14 30 a 14 32 ATTACHING INDIVIDUALBRUSHESTO BRUSHRETAINER a Removethe brush retainer assemblyperPar...

Page 997: ...VICE MANUAL Figure 14 14 Wiring Schematic Electric Propeller De Icing System Two Blades Figure 14 15 Wiring Schematic Electric Propeller De Icing System Three Blades Reissued 10 12 79 5E24 5E24 ACCESS...

Page 998: ...of brush should be allowed to protrude from brush block This is the normal position of the brush when installed on the aircraft PIPERNAVAJOSERVICEMANUAL BRUSHBLOCKASSEMBLY DETAIL A SHOWING MAX PERMIS...

Page 999: ...30 a 14 33 ALIGNMENTOF NEW BRUSHES Anytime the brush block assembly is dismounted the alignmentat reinstallation must be checkedas describedin Paragraph14 28 f and Figure14 17 14 33a REPLACEMENT OF BR...

Page 1000: ...esof the three slip rings must be parallel within 0 005 inch and flat within 0 005 inch overall deviationfrom flat not to exceed0 002 inch overa 4 inch arc If necessary undercut insulation between sli...

Page 1001: ...5F4 INTENTIONALLY LEFT BLANK...

Page 1002: ...5F5 INTENTIONALLY LEFT BLANK...

Page 1003: ...e an open circuit to be the wrong resistance or to be visibly damaged beyond repair as outlined in Paragraph 14 28 of this section replace the De Icer as directed in Paragraphs 14 42 thru 14 49 14 40...

Page 1004: ...to see that it is holding beforereleasingfor flight Approximately24 hours NOTE Do not touch cemented surfacewithdirty or oily fingers 1441 REMOVALOF DE ICER a Disconnectterminalsof propellerDe Icerfro...

Page 1005: ...ysideof the De Icer b Moisten a clean cloth with MEK or acetone and clean the unglazed surface of the De Icer changingcloth frequently to avoidcontamination of the cleanarea c Thoroughly mix the 1300L...

Page 1006: ...sesrapid drying and provides only 10 seconds working time for De Icerapplication comparedwith 40 secondsfor toluol 1 Positionthe De Iceron the propellerleadingedge usingcenterlines starting from the h...

Page 1007: ...399 400 PIPERNAVAJOSERVICEMANUAL PATTERN Figure 14 19 Installation of De Icer Boot Figure 14 20 Wrinkled De Icers ACCESSORIES ANDUTILITIES Reissued 10 12 79 5F10...

Page 1008: ...part 2 3 EC 1031 EC 801 Twelveparts 1031 onehundredpart 801 4 C 19861 C 21871 C16176 one part 19861 sevenparts 21871 two and two thirds parts 16176 e Locate maskingtape approximately 125 inch beyond c...

Page 1009: ...dby referringto the resistance values below and schematic diagram Figure 14 14or 14 15 Proper identificationis necessaryin order to make the system cycle properly and to obtain the correct amperage va...

Page 1010: ...JO SERVICE MANUAL 402 DE ICER LEAD STRAP PROP DE ICER STRAP RESTRAINER 1 7 8 1 8 Propeller Blade in Low Pitch Figure 14 21 STRAP RESTRAINER 1 32 1 32 PROP BLADE THIS AREA Figure 14 22 Propeller Blade...

Page 1011: ...reon screws 14 49 FINALELECTRICCHECK a Makecertain that all terminalsare tight Do not over torque b Check the electrical resistance between the De Icer terminals or between the slip rings The reading...

Page 1012: ...ce must be as given Each of these four contacts must deliver voltage for approximately 30 seconds in turn and there must be zero voltage on the three contacts not energized c If the timer meets these...

Page 1013: ...replace the ammeter Open ammeter to timer If no voltage into switch locate and correct open If no voltage at switch output with voltage at switch input replace the switch If voltage is satisfactory a...

Page 1014: ...straps If there is voltage to brush block wire har ness plug try voltage at junction of De Icer lead and slip ring lead If no voltage find and correct open in wiring within brush block or no contact o...

Page 1015: ...r corroded connection Check voltage into switch Test for voltage up to and out of ammeter If low or zero output and input satisfactory re place ammeter If no voltage to ammeter locate and fix open be...

Page 1016: ...locate and correct Disconnect leads at brush block and with ohmmeter check from power leads to ground If ground is indicated locate and correct Ground between brush block and De Icers Excluding ground...

Page 1017: ...original failure has been located and corrected Ammeter flicks be tween 30 second phase periods Loose connection be tween aircraft power supply and timer in put Iftrouble occurs over en tire cycle tra...

Page 1018: ...res 14 13 and 14 17 Look for rough or dirty slip rings If this is the cause clean machine or replace slip ring assembly as required Check slip ring align ment Refer to para graph 14 34 Loose connectio...

Page 1019: ...d brush wear or frequent breakage Crossed connections Brush block out of alignment Check system wiring circuit diagram for improper connections Refer to Figures 14 14 or 14 15 Check brush alignment Re...

Page 1020: ...ON 2 DIRECTIONAL CABIN HEATER OUTLET 3 CABIN AIR INLET 4 HEAT COMBUSTION AIR INLET 5 HEATER EXHAUST PIPERNAVAJOSERVICEMANUAL 404 Figure 14 23 Aft Cabin Heater Installation Reissued 10 12 79 ACCESSORIE...

Page 1021: ...sed to supply fuelto the aft heater Thepump is accessible through the accesspanelon the lowersurfaceof the wingnext to the fuselage 14 56 REMOVALOF PUMP Refer to Figure 14 24 a Turn the fuel selectora...

Page 1022: ...b Install the plunger spring 5 cup valve 6 0 ringseal 7 and washer 8 c Compressspring 5 and assembleretainer 9 with ends of retainerin sideholesof tube 4 d Place the cover gasket 11 and magnet 10 in t...

Page 1023: ...NGER 3 FILTER 4 PLUNGER 5 SPRING 6 CUP VALVE 7 O RING 8 WASHER 9 RETAINER 10 MAGNET 11 GASKET COVER 12 COVER 13 AFT HEATER FUEL PUMP 14 FUEL FILTER 15 SELECTOR VALVE Figure 14 25 ExplodedViewof Electr...

Page 1024: ...from the compressor at the right front of the right engine down under and across the engine to a point on the left side of the firewall From there through the condenser to the main spar into the whee...

Page 1025: ...PIPERNAVAJOSERVICEMANUAL ON 31 8012088 UP SERVICE VALVE FREONSUCTION VENTILATING BLOWER B EXPANSION VALVE EVAPORATOR Figure 14 26 SystemInstallation Revised 9 23 80 ACCESSORIESANDUTILITIES 5G4...

Page 1026: ...High Pressure Gauge Reading p s 1 21 15 10 2 4 6 8 10 12 14 16 18 20 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 45 47 49 52 53 57 62 66 72 86 105 109 113 117 122 126 129 132 13...

Page 1027: ...chart indicates It must be pointed out that the actual temperature of the air passingoverthe coils of the evaporator willbe severaldegreeswarmer allowingfor a temperature rise caused by the loss in th...

Page 1028: ...pressureswitch wiresH4 and H24 h Thiswillallowfurther operation to check the thermostat operation and the freonlevel 14 66 SPECIAL SERVICINGPROCEDURES The air conditioning system should be serviced b...

Page 1029: ...quantities of Refrigerant 12 which come in contact with live flame will produce a poisonousgas e Keeplinescapped to prevent foreignmaterialandmoisture from entering thesystem f This is a high pressure...

Page 1030: ...stemis closed when the stem is turned out the valveis BACKSEATED the systemis open Whenthe stem is turned to the halfway position commonly known as being CRACKED the gaugeport is open to the system Th...

Page 1031: ...PIPERNAVAJOSERVICEMANUAL 1257 H H DIAGRAM A H DIAGRAM B H DIAGRAM C DIAGRAM D Figure 14 28 ManifoldSetOperation Reissued 10 12 79 ACCESSORIES ANDUTILITIES 5G10...

Page 1032: ...tion depending on the type of equipment which is available Two methods of performing this check will be coveredin the followingParagraphs 14 70 LEAKCHECK METHODI EVACUATE PRIORTO LEAKCHECK a Connect t...

Page 1033: ...ith a shut offvalve arrangement to the fitting The charginghose must haveSchraderfittingor adapter to fit the valve b Connect the other end of the charginghose to asmallcylinderof refrigerantand purge...

Page 1034: ...system we lowerthe boilingtemperatureof the water moisture that maybepresent Then weareabletopull this water inthe formofvapor outofthesystem Thereceiver dehydratormustbechangedat leastonceevery two y...

Page 1035: ...ntinuing with evacuation i If no leaks are evident reopen both manifold hand valvesand continue the evacuation for another 30 minutes j Closeboth manifold hand valves stop vacuum pump and disconnect c...

Page 1036: ...ush out highand low pressure lines by opening valves1 and 2 momentarilyuntil a whitestream of refrigerantis observed Closeallvalves b EVACUATING SYSTEM NOTE Be certain system has been depressurizedbef...

Page 1037: ...tion valves Open valve 4 refrigerant control andvalve 2 highpressurecontrol and allowone pound of refrigerantto enter system 3 Using the Bacharach Leakator or equivalent electronic leak detector check...

Page 1038: ...ve after the sightglassclears 6 If meansare availableto weighthe container anadditional 1 2pound of refrigerantcan be added to increasethe timebetween systemcharges 7 Turn off the air conditioner and...

Page 1039: ...lves Connect the low pressure gaugeto the suction side and the high pressure gaugeto the dischargeside See Figures 14 33 and 14 37 Securethe gaugeset to preventmovementand aircraftdamagefrom prop blas...

Page 1040: ...ellclearof the right prop 2 Looselyconnect a suitable chargingline to the gaugeset whichshould beconnected to the evacuated system Connect the other end of the chargingline to the refrigerant containe...

Page 1041: ...unce oil level is required in compressorsinstalledon new systems Approximately 6 ouncesis distributed in the system during operation Replacement compressors should be charged with 10 ounces of oil unl...

Page 1042: ...oints and connectionsfor any leaks 11 Releasethe one pound of refrigerantfrom the systemand make repairs then re evacuatethe compressorper Step h 1 thru 6 12 Closeallvalveson chargingstation and stop...

Page 1043: ...lly closeboth servicevalves clockwise on the compressor e Remove both service valves from the compressor with the related pressure and suction lines attached CAUTION Compressor pressure will bleed off...

Page 1044: ...ompressor 1 Carefullyremove the blue line from the lowpressurevalve Thisline willcontain a smallamount of refrigerant CAUTION It is advisableto cover hands before removingthe line from the gauge fitti...

Page 1045: ...ce tension limitsand lessthan the new belt tensionrequirements 14 81 MAGNETICCLUTCH 14 82 MAGNETICCLUTCHREMOVAL a Removethe self lockingcapscrewand washerfrom the compressorshaft b Insert a 5 8 11 UNC...

Page 1046: ...ley rotates if there is interference The rotor pulley assembly must be removed and the mounting of the field assembly adjusted until the interference is eliminated 14 84 CONDENSER 14 85 CONDENSERREMOV...

Page 1047: ...efrigerant sealant to the flare only to insure a leak free connections Torque the fittings refer to Table XIV III e With the condenser secured proceed to evacuate and recharge Refer to Paragraph 14 73...

Page 1048: ...ringson the line fittings andlubricate the O ringswith refrigerantoil c Connect the refrigerantlinesto the dehydrator CAUTION Torque the fittings Refer to TableXIV III d Evacuateandrechargethe system...

Page 1049: ...it is necessaryto remove the module as an assembly a The air conditioning system must be completely discharged before disassembly Refer to Paragraph14 73 b Remove the inboard end panels of the module...

Page 1050: ...old tube aft Secure with 8 AN 3 3A bolts In the right module attach the temperature control switch capillary tube to the second tube from the forward side of the evaporator core with the special clips...

Page 1051: ...duct bracket and the forward edge of the duct openingin the end panel of the module Securewith attachingscrews b Realignblowermotor assemblywithair duct and secureclamp c Make related electrical conn...

Page 1052: ...rd to aft starting with the pilots outlet No 1 as shown in Figure 14 37a C462 Figure 14 37a Air Conditioning Outlets TABLE XIV VA AIR VELOCITY CHART OUTLET NO Refer to fig 14 37a FEET PER MIN 1 500 2...

Page 1053: ...PIPER NAVAJO SERVICE MANUAL 124 PROBE PILOTS COPILOTS OUTLETS GRILLE VANE CABINOUTLETS PROBE Figure 14 37b Positioning of Airflow Probe Reissued 10 12 79 ACCESSORIES AND UTILITIES 5H8...

Page 1054: ...ure that the foam rubber gaskets are installed These gaskets are located at the junctures of the parts to prevent re circulation of the cool air Air recirculated at this juncture reduces the amount be...

Page 1055: ...ators 1 In the nacelle the fittings at the condenser and at the aft side of the firewall and the fittings in the immediate area 2 In the evaporator area the fittings at and around the expansion valve...

Page 1056: ...PIPERNAVAJOSERVICEMANUAL C463 Figure 14 37e Air Conditioning Schematic Reissued 10 12 79 ACCESSORIES ANDUTILITIES 5H11...

Page 1057: ...leedchargefrom system Evacuate and rechargesys tem Clean bugsand dirt fromcon denserfins Straightenfins if bent Checkthat capillary coil is securely clampedto suction line If capillary coil OKreplace...

Page 1058: ...e will show frost Expansion valve inlet screen clogged Inoperative ex pansion valve Valve stuck closed or capillary coil has lost its charge Add Refrigerant Install new dryer Evacuate and re charge sy...

Page 1059: ...tch coil Clean clutch surfacesof oil Clean with solvent and replace Replacevalveswith valvekit Remedy Trouble Systemproduces no cooling Electrical Open circuit breaker Reset circuit breaker Brokenor d...

Page 1060: ...nt flow to blower motor repair or replace if inoperative 14 97 Mechanical Loose or broken drive belt Compressor partially or completely frozen Expansion valve stuck in open position Replace drive belt...

Page 1061: ...epair leak as necessary NOTE After completing repairs of any above causes the system must have the dehydrator replaced Then the complete system must be purged evacuated and recharged to remove excess...

Page 1062: ...n Insufficient re frigerant in sys tem Clogged screen in expansion valve Expansion valve capillary coil has lost charge Clogged screen in receiver Excessive moisture in system Air in system Recharge s...

Page 1063: ...nding or improperconnec tion in compressor clutch coilor sole noid Replaceor repair as necessary 14 81 Mechanical Looseor exces sivelyworndrive belts Noisyclutch Compressornoisy Compressoroil levellow...

Page 1064: ...tem cont Refrigeration Excessivecharge in system Dischargeexcess refrigerantuntil high pressuregauge drops within specifications Low chargein system Excessivemois ture in system Checksystemfor leaks c...

Page 1065: ...manually synchronizing engines the selector switch can be set to the phase position This permits thesynchrophaser tohold engines in RPM agreement and also in the preselected phase relationship 14 105...

Page 1066: ...ECONE 16 CIRCUIT PROTECTOR SLAVEDENGINE RIGHT 17 GOVERNOR DUALDRIVEADAPTER RIGHTENGINE 18 SOLENOID EXISTING TACHOMETER SHAFT STROBE SENSOR S N 31 5 THRU 31 7812039 PULSEGENERATOR S N 31 7812040ANDUP I...

Page 1067: ...starter switches e Ascertain that the magneto switches are OFF Turn the master switch ON and set the synchrophaserswitch on MANUAL Read the solenoidcurrent on the ammeter A stabilizedreadingshould be...

Page 1068: ...RPM and phase changes but will showa definite tendency to stay right or left of zerowhen engineRPM sare not in phase 14 107 TROUBLESHOOTING The followingchecks should be made when a malfunctionof the...

Page 1069: ...he volt ohmmeter readingsat the patch cablejunction box with the pulsegeneratorrunningor the simulatorinstalled g If this test is positive a bad aircraft harnesslead may be present Check the harness w...

Page 1070: ...Move the potentiometer and listen to the computer The motor should run at approximately 7 volts e Adjust the potentiometer just short of motor operation Move the pressure drain switch from ON pressure...

Page 1071: ...re the light just comes on Lock the pulse generator into position Always turn both generators in the same direction when timing unless they are driven in opposite directions Then the housings must be...

Page 1072: ...mark NOTE If this point is missed do not turn the engine backward start over c Turn the strobe sensor case clockwiseto align the timingmark with the center of the keyway This is the phaseposition The...

Page 1073: ...OTE OnS N 3 1 7812040andup a secondpulse generatoris used in lieuof a strobesensor intheright engine nacelle and it is removedas is described for the strobe sensor in paragraph 14 108 14 111 INSTALLAT...

Page 1074: ...ron the ignition stroke The slaveengine is then set at the desired propeller position cylinder number2 at T D C on the ignitionstrokeand rotate the enginean additional22teeth on the ringgear beyondthe...

Page 1075: ...ortogether It may be necessaryto tap the center shaft to separate the halves c Reconnect plug PL3 and visuallyobserveif both glowlampslight with the masterengine turning at near cruisingRPM A pulse ge...

Page 1076: ...E GENERATOR Figure 14 42 Fabricated Test Box A207 PHOTO STROBE SENSOR NOTE THIS WIRING DIAGRAM IS INTEN DED AS REFERENCE MATERIAL FOR CURRENT DIAGRAMS REFER TO CHAPTER 11 STROBE SENSOR VIEWED FROM CON...

Page 1077: ...96 1000CONNECTOR 90797 82 6REQ NOTE NOT VOLTAGE SENSITIVE Figure 1444 Strobe SensorInternalWiringTest Unit POWER 110 V A C C464 POT MOTOR STARTS AT APPROX 7 0 VOLTS JUST AT START OF MOTOR PRESSURE OR...

Page 1078: ...12V D C C to F 12to 14V D C D to F 6V A C Dto F 15V A C E to F 6V A C E to F 15V A C Figure 14 46 Patch Cable and Test Terminal C465 PULSE GENERATOR SIMULATOR APPROX 1200 R P M 01 UNIJUNCTION TRANSIST...

Page 1079: ...INPUT TO TACHS ON INSTRT PANEL L GND RT SIGNAL IN L SIGNAL IN GOVERNER SOLENOID RT ENG ONLY 23 A C 28VD TO COMPUTER COMPUTER WHEN SYSTEM IS OPERATIONAL TEST BOX WHEN CHECKING WIRING HARNESS NOTE THISW...

Page 1080: ...ampamplifier incomputer not operating Glow lampor lamps and or photo conductor or conductors defective Faulty computer Visuallycheck Refer to Paragraph14 107a Performelectrical test in accordance with...

Page 1081: ...y monitor the propeller RPMand regulate the slavegovernoras required within the RPMrangeof the systemaslongas it is on The limitingrange of operation is built into the systemto prevent the slavepropel...

Page 1082: ...IT BREAKER 4 GROUND CONNECTION 5 CONTROL HEAD 6 CONTROL PEDESTAL 7 INSTRUMENT PANEL 8 PHASE SERVO 9 SLAVE GOVERNOR 10 SLAVE ENGINE RT 11 MAGNETIC PICKUP RT ENG 12 ELECTRONIC CHASSIS Figure 14 48 Prope...

Page 1083: ...ropellerpitch control leversto the highposition d Hold the governorarm against the high RPMstop and move the servoin itsbracket to alignthe right propellercontrol lever with the left lever NOTE Increa...

Page 1084: ...E AMP BUS 24V RIGHT WING ROOT CONNECTOR 5 AMP GROUND CONTROL HEAD COCKPIT Figure 14 49 Synchronizer Schematic 1261 1 JAM NUTS 2 SPRING 3 SERVO CABLE ASSEMBLY 4 CLAMP 5 LINK ASSEMBLY 6 GOVERNOR CONTROL...

Page 1085: ...d to simulateengine running conditions so the system operation can be checkedin the hangar without actually running the engines A list of parts and a schematic are shownin Figure14 51 The followingste...

Page 1086: ...AJOSERVICEMANUAL PARTS LIST FOR SYNCHRONIZERTEST INSTRUMENT Amount Part Type 1 1 2 1 1 10 Volt AC Transformer Switch Switch Socket Plug any AC S P S T D P S T M53106A 14S 6P 115 Volt AC Cable two cond...

Page 1087: ...chronization when turned on Intermittent shorts or opens in the pickup or its wiring Replacedefective pickup Synchronizer will not center Defective pickup Defective electronic component Replace Replac...

Page 1088: ...II TROUBLESHOOTING CHART PROPELLERSYNCHRONIZER cont Trouble Cause Remedy Synchronizercorrects in one direction only Defectiveelectronic component Mechanicalbindingin one direction Replace Correct bind...

Page 1089: ...y valveallowsnormal system pressure to pass to the copilot s gyros and the deicer control valvepermits boot pressure to be exhausted overboard and system vacuum is reapplied to the boots to hold them...

Page 1090: ...DUMP VALVE 10 RELAY VALVE 11 MANIFOLD CHECK VALVE 12 INSTRUMENT PRESSURE GAUGE AND SOURCE INDICATOR 13 DEICER TIMER 14 PRESSURE SWITCH 15 PILOT DIRECTIONAL GYRO 16 PILOT ALTITUDE GYRO 17 COPILOT DIRE...

Page 1091: ...DIRECTIONAL GYRO PILOT 10 ALTITUDE GYRO PILOT 11 DIRECTIONAL GYRO COPILOT 12 ATTITUDEGYRO COPILOT 13 SYSTEM WING SOLENOIDVALVE 14 B SYSTEM TAIL SOLENOIDVALVE 15 MANIFOLDCHECKVALVE 16 PRESSURE SWITCH...

Page 1092: ...or the airplaneinstruments and any other equipment Refer to Section X of this ServiceManual for the proper procedure 14 135 COMPONENT MAINTENANCE ANDREPLACEMENT 14 136 FILTER REPLACEMENT There are fou...

Page 1093: ...embly then removethe lockingnut on the filterline and remove the filter d Installationof Air Filter 1J1 3 NOTE The filter should be cleaned or replacedas required at each 100 hour inspection Refer to...

Page 1094: ...boots deflateslowly the linesor valvesmaybeplugged Thenthelinesshouldbedisconnectedandblownclear Checkthe timingof thesystemthroughseveralcompletecycles AlldeicerbootsshouldcomeONfor sixseconds If th...

Page 1095: ...143 REPAIROFBOOTS Deicerrepairsareclassifiedas cold whenmadeon the bootinstalledonthe air plane and vulcanized made on the demountedboot inthe shop Referto Paragraph14145for vulcanized repairs 14 144...

Page 1096: ...be parallel to cut edge of surface ply to prevent looseningit Buff the edgesof the adjoiningsurface ply 1 2 inch with Part No 74451 75 buffing sticks taper down to the tan rubber ply Remove loose part...

Page 1097: ...y BuffingSticks BuffingShield Thiscement willgivebest resultswith the patches in this kit The followingitems may be procuredfrom the B F GoodrichCo Akron Ohio or other manufacturer as required 74 451...

Page 1098: ...ily repairs to extensive rippingof the tube or stretch areas which may make repairs exceedinglydifficult or actually impossible The determination of just where this division between repairable and unr...

Page 1099: ...ngedge fasten the end of each non kinkhose to the corresponding air connection stem Tinnerman or other suitable non kink hose clamps should be used for this purpose Tighten each clamp witha pair of sl...

Page 1100: ...am line whiletension is appliedto peel back the boot Thisremovalshould be slowenoughto allowthe solventto undercut the cement thus preventinginjury to the part Excessivequantities of solventmust be av...

Page 1101: ...wer the strength of adhesion between ice and the rubber surfacesof airplanedeicers Icex willnot harm rubber and offers added ozone protection Properly applied and renewed at recommendedintervals Icex...

Page 1102: ...n that immediate resurfacing is required remove them from the airplane and resurfacein a shop Clean deicerthoroughly withisopropyl acetate a Roughenentire surfaceof boot using a finegrit sandpaper b C...

Page 1103: ...ot functioning Pipinglinesblockedor not connected Test or replaceas re quired Makeelectricaltest Blowout linesand in spect connections Makeair leakage test Deicersinflate slowly Inflation time 6 secon...

Page 1104: ...ssurenot beingreached Replacelamp Check deicers inflate slowly above Pressureswitchnot functioning Wireslooseor broken Poor groundingof pressureswitch Makeelectricaltest and replaceif required Makeele...

Page 1105: ...e after the fire is extinguished to remove smoke or fumes 14 155 PORTABLE FIRE EXTINGUISHER INSPECTION AND MAINTENANCE a It is recommended that the fire extinguisher be inspected monthly or in accorda...

Page 1106: ...5J13 THRU 5L24 INTENTIONALLY LEFT BLANK...

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