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Содержание AV-723-1-D-C-F-R

Страница 1: ...P W AV 803 1 E C F R W AV 804 1 E C F R W AV 844 1 E C F R G P W Document number E EN N 1 13 32 20 0 ATA 61 10 20 Issue 4 October 06 2017 Revision March 4 2019 The technical content of this document i...

Страница 2: ...EL ANY ACTIVITIES BEYOND THE SCOPE OF THIS MANUAL TO BE PERFORMED ONLY BY A PERSON TRAINED AND AUTHORIZED BY AVIA PROPELLER ALWAYS USE THE LATEST REVISION OF THIS MANUAL THE LATEST REVISION OF THIS MA...

Страница 3: ...MODEL DESIGNATION 3 1 4 DESIGN AND OPERATION INFORMATION 4 1 5 INSTALLATION AND OPERATION INSTRUCTION 5 1 6 INSPECTIONS 6 1 7 MAINTENANCE 7 1 8 TROUBLE SHOOTING 8 1 9 SHIPPING AND STORAGE 9 1 10 TOOLI...

Страница 4: ...017 10 06 R 71 18 Cover II 1 III 1 5 14 2018 07 27 R 23 19 Cover II 1 III 1 5 2 5 14 12 6 12 10 12 11 12 16 12 37 2019 03 04 REVISION R 23 19 SUMMARY Aeroshell Grease 22 added as replacement of Aerosh...

Страница 5: ...5 4 2017 10 06 11 3 2017 10 06 12 24 2017 10 06 5 5 2017 10 06 11 4 2017 10 06 12 25 2017 10 06 5 6 2017 10 06 11 5 2017 10 06 12 26 2017 10 06 5 7 2017 10 06 11 6 2017 10 06 12 27 2017 10 06 5 8 201...

Страница 6: ...mit should be established for certain part of the propeller assembly This limit requires the replacement of such part after a specified number of hours of operation TSN Time Since New 2 This section s...

Страница 7: ...parts are repaired or replaced All sealing elements are replaced Corrosion preventive coatings of the parts are renewed Propeller is reassembled adjusted and balanced The overhaul interval is usually...

Страница 8: ...placement Basically only some outside mounted parts such as propeller to engine o ring de icing cables and some other de icing components some fasteners may be replaced in the field by the user Some o...

Страница 9: ...circle 4 25 inch 107 95 mm 7 Letter for counterweights C Counterweights for pitch change forces to increase pitch 8 Letter for feathering F Feathering capability 9 Letter for reverse R Reverse capabil...

Страница 10: ...hangeability Capital letter Modifications restricting or excluding interchangeability 3 3 The complete propeller designation is a combination of both hub and blade designations separated by a slash ma...

Страница 11: ...in the hub The pitch change of the blades is obtained with a pin in the blade shank or in the blade bushing face A plastic block connects the blade with the piston and the axial movement of the servo...

Страница 12: ...ing in the ball bearings with one set of balls in the propeller hub Connection with the pitch change mechanism is made through plastic pitch change blocks installed on the pins in the blade shank thre...

Страница 13: ...manual for information on propeller control system associated with Jihostroj LUN series governors 4 7 Electrothermal De icing System The propeller may have electrical or liquid de icing systems instal...

Страница 14: ...er to avoid damage of the de ice boots overheating 5 3 Spinner Dome Removal a Propeller AV 725 with metal spinner dome Remove all screws attaching the spinner dome to the rear bulkhead and to the stif...

Страница 15: ...e blade and blade bushing may occur This can cause the blade and blade bushing will be scrapped at overhaul c Make sure that blade shank and inside of the blade bushing are clean and dry Clean with li...

Страница 16: ...ftlb CAUTION TAKE CARE TO CORRECT SEATING OF THE BOLT HEAD WHEN TIGHTENING THE CLAMP SEE FIGURE 5 5 HOLD THE BOLT HEAD IN CORRECT POSITION WHILE TIGHTENING THE NUT CHECK THE CORRECT SEATING OF THE BO...

Страница 17: ...CAUSE THE CHANGE OF BLADE ANGLE SETTING IN OPERATION FIGURE 5 6 j As necessary additionally tighten the nut to match the nearest cotter pin hole in the bolt Secure the nut with a cotter pin CAUTION 1...

Страница 18: ...hed forward to allow access to the propeller mounting flange See Figures 5 7 and 5 8 a Check the distance 46 7 0 2 mm 1 84 0 008 inch from the beta ring to the propeller mounting flange b Remove safet...

Страница 19: ...the dimension how far the beta tube must be turned in was recorded during previous propeller removal This is important to set the low pitch stop The O ring B in the engine flange and the O ring A on t...

Страница 20: ...e flange in a few steps CAUTION PLEASE NOTE THAT THE PROPELLER SHOULD NOT BE PULLED ONTO THE ENGINE FLANGE WITH MOUNTING NUTS IN ORDER TO AVOID DAMAGE TO THE PROPELLER AND TO AVOID SHEARING OFF CHIPS...

Страница 21: ...holes in the engine flange e Carefully slide the propeller onto the engine flange CAUTION PLEASE NOTE THAT THE PROPELLER SHOULD NOT BE PULLED ONTO THE ENGINE FLANGE WITH MOUNTING NUTS IN ORDER TO AVO...

Страница 22: ...EN 1320 OPERATION AND INSTALLATION MANUAL FIGURE 5 11 FIGURE 5 12 61 10 20 INSTALLATION AND OPERATION INSTRUCTION Page 5 9 2017 10 06...

Страница 23: ...ack to flight idle position b Positioning the Blades at the Start Lock by using the Start Lock Puller If Beta Rod is already installed remove Beta Rod from the propeller guide rod CAUTION IF BETA ROD...

Страница 24: ...E RADIAL CLEARANCE MUST EXIST BETWEEN THE CARBON BLOCK AND THE BETA RING OVER THE ENTIRE TRAVEL RANGE OF THE BETA RING OTHERWISE DAMAGE OF THE CARBON BLOCK AND THE BETA RING WILL OCCUR THE AIRFRAME OR...

Страница 25: ...uld be angled of 2 degrees from perpendicular of the copper rings toward the direction of slip ring rotation See figure 5 15 d Check that each brush is aligned with the copper ring throughout full 360...

Страница 26: ...2A Put washer AN 960 10 on both sides Finally bring the blades into the start lock b Models Ending in R P CAUTION LOW PITCH STOP HAS TO BE ADJUSTED IN COMPLIANCE WITH THE DESCRIPTION OF THE AIRPLANE M...

Страница 27: ...THE ENGINE THE GROUND MUST BE CLEANED TO AVOID STONE NICKS ON PROPELLER BLADE AND THE DE ICERS 5 16 Cary out a functional check Propeller check Start and warm up the engine per aircraft manufacturer s...

Страница 28: ...dome surface can be heated to max 85 C 185 F for metal spinnerdome max 60 C 140 F for composite spinnerdome 5 22 In Flight Power as well as rpm setting according to the Aircraft Flight Manual 5 23 Fea...

Страница 29: ...side the painted surface signs of burning or melting chipped or missing material in place of lightning strike Refer to the section Lightning strike in this chapter if lightning strike is found or susp...

Страница 30: ...ssembly in the feedback lever If there is binding identify and correct the cause Too small clearance of the yoke pin in the feedback lever or foreign particles between them may be the possible causes...

Страница 31: ...oving the blades Use the sharp needle to renew the lines as necessary d Remove the cotter pins loose the clamp bolts and remove the blades from the bushing e Thoroughly inspect the threads of all blad...

Страница 32: ...the propeller condition lever to maximum RPM g Move the engine condition lever slowly to RPM corresponding to overspeed governor setting RPM no further increased see Table 6 1 Then increase the power...

Страница 33: ...AND INSTALLATION MANUAL EN 1320 Overspeed governor model Propeller RPM at Functional Test of Overspeed Governor 300 095 1900 1950 RPM 300 095 2 1720 1780 RPM TABLE 6 1 61 10 20 INSPECTIONS Page 6 5 2...

Страница 34: ...and visible hub components for cracks mechanical damage and other unusual condition If crack is found or in case of any doubt contact Avia Propeller c Thread type blade models only Check correct inst...

Страница 35: ...MAY INDICATE THE DAMAGE INSIDE THE PROPELLER FIGURE 6 2 4 Blade track NOTE This inspection procedure only be performed if blade track problem is suspected as potential source of abnormal propeller ope...

Страница 36: ...e c Check the cable ties that attach the cables to the spinner bulkhead and to the hub as applicable Use cable ties per MIL3367 if damaged or missing d Check the connection of cables to the slip ring...

Страница 37: ...o both sides of the damage providing a smooth blended depression which maintains the original airfoil general shape Repairs to the blade thrust or camber should be made in the same manner as above Rep...

Страница 38: ...f the propeller RPM exceeds the maximum RPM published in Type Certificate Data Sheet of applicable propeller type Overtorque occurs when the engine load exceeds the limits established by the engine pr...

Страница 39: ...as not caused by a mechanical problem When overspeed inspection or overhaul is required the propeller must be removed from service and be sended to manufacturer or authorized repair station for inspec...

Страница 40: ...ear Type of propeller governor S No Type of propeller hub S No Type of propeller blade S No of blade 1 2 3 4 5 Max overspeed note whether being indicated or estimated Propeller position e g take off c...

Страница 41: ...r Type of propeller governor S No Type of propeller hub S No Type of propeller blade S No of blade 1 2 3 4 5 Max overtorque note whether being indicated or estimated Propeller position e g take off cr...

Страница 42: ...rized service centre for proper inspection 6 9 FOREIGN OBJECT STRIKE Foreign object strike is any event whether or not the engine is operating when the propeller comes into contact with anything other...

Страница 43: ...undertake the remaining imbalance should be below 0 2 ips 7 4 1 2 Follow the instructions from the equipment manufacturers for dynamic balance 7 4 1 3 If the dynamic imbalance is bigger than 1 2 ips...

Страница 44: ...s approximately equal to eight AN970 3 style washers 7 4 3 5 Weights are to be installed using aircraft quality 10 32 inch screws bolts 7 4 3 6 Balance weight screws attached to the spinner bulkheads...

Страница 45: ...the blade bushing edge opposite to the position mark on the blade 6 Treat the blade bushing edge with zinc coat or with clear lacquer 7 Make an entry in the propeller logbook to document that an origi...

Страница 46: ...EN 1320 OPERATION AND INSTALLATION MANUAL FIGURE 7 1 61 10 20 MAINTENANCE Page 7 4 2017 10 06...

Страница 47: ...engine move the blades by turning them with hands within the angular play If excessive friction exist the blade retention system has to be inspected contact factory 8 3 Surging rpm Cause 1 Trapped air...

Страница 48: ...l indicate high leakage in the oil transfer system on the propeller shaft Repair turbine 3 Contact manufacturer 4 Check governor drive and governor on the test bench 8 6 Rpm increase during normal ope...

Страница 49: ...n the rotating propeller and the turbine must be inspected If necessary inspect the carbon brush block and the brass slip ring for damage or wear or check the beta valve Relief valve pressure is too l...

Страница 50: ...HE PROPELLER IS PACKED IN A SPECIAL FOIL IMPREGNATED WITH CORROSION INHIBITORS DO NOT REMOVE THE FOIL WITH NO INTENTION TO INSTALL THE PROPELLER ON ENGINE 9 3 It is expected that the propeller will be...

Страница 51: ...l Calibrated torque wrench Compatible torque wrench inserts 22 mm or 7 8 inch all models 19 mm or 3 4 inch AV 725 series only Compatible breaker bar Wire twisting pliers Cross head screwdriver flat he...

Страница 52: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 0 DRAWINGS AND PARTLISTS 11 1 AV 725 1 E C F R P Figure 11 1 AV 725 1 E C F R P Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 1 2017 10 06...

Страница 53: ...ring 2 17 Bushing 7 2 Cable 2 18 Pin 7 3 Cable 2 19 Bushing 7 4 Cushion clamp 2 20 Selflocking nut 7 5 Screw 2 21 Spring guide 7 6 Selflocking nut 2 22 Screw 7 7 Washer 2 23 Beta rod 7 8 Screw 2 24 Be...

Страница 54: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 2 AV 725 1 E C F R W Figure 11 2 AV 725 1 E C F R W Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 3 2017 10 06...

Страница 55: ...21 O ring or Spacer ring 2 22 O ring 7 2 Cable 2 23 O ring 7 3 Cushion clamp 2 24 O ring 7 4 Screw 2 25 Beta ring 7 5 Selflocking nut 2 26 O ring 7 6 Washer 2 27 O ring 7 7 Cable clip 2 28 Bearing rac...

Страница 56: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 3 AV 803 1 E C F R W Figure 11 3 AV 803 1 E C F R W Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 5 2017 10 06...

Страница 57: ...14 Screw 7 1 Slip ring 2 15 Oil tube or Spacer ring 2 16 Screw 7 2 Cable 2 17 Washer 7 3 Lead clip 2 18 O ring 7 4 Screw 7 5 Selflocking nut 2 20 Guide ring 7 6 Washer 2 21 O ring 7 7 Screw 2 22 O rin...

Страница 58: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 4 AV 844 1 E C F R G Figure 11 4 AV 844 1 E C F R G Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 7 2017 10 06...

Страница 59: ...ck 3 10 Screw 2 9 Guide block 3 11 Washer 2 10 Guide bushing 6 0 Counterweight 2 11 Spring 6 1 Screw 2 13 Nut 2 14 Screw 2 15 Screw 2 16 Washer 2 17 O ring 2 18 Backup ring 2 19 O ring 2 20 O ring 2 2...

Страница 60: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 5 AV 844 1 E C F R P Figure 11 5 AV 844 1 E C F R P Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 9 2017 10 06...

Страница 61: ...5 Selflocking nut 6 1 Screw 2 16 Beta rod 7 1 Cable 2 17 Nut 7 3 Cover tube 2 18 Bushing 7 5 Cushion clamp 2 19 Bushing 7 6 Bushing 2 20 Beta ring 7 7 Screw 2 21 Carbon block 7 8 Washer 2 22 Retaining...

Страница 62: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 6 AV 844 1 E C F R W Figure 11 6 AV 844 1 E C F R W Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 11 2017 10 06...

Страница 63: ...ip ring 2 13 Retaining ring or Spacer ring 2 14 Front fork 7 2 Brush block assy 2 15 Oil tube 2 16 Screw 2 17 Washer 2 18 O ring 2 19 Backup ring 2 20 Guide ring 2 21 O ring 2 22 O ring 2 23 O ring 2...

Страница 64: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 7 AV 804 1 E C F R W Figure 11 7 AV 804 1 E C F R W Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 13 2017 10 06...

Страница 65: ...late 2 14 Screw 3 5 Rivet 2 15 Oil tube 3 6 Selflocking nutplate 2 16 Screw 3 7 Screw 2 17 Washer 3 8 Washer 2 18 O ring 3 9 Rubber ring 2 19 Front fork 7 1 Slip ring 2 20 Guide ring or Spacer ring 2...

Страница 66: ...EN 1320 OPERATION AND INSTALLATION MANUAL 11 8 AV 723 1 D C F R P Figure 11 8 AV 723 1 D C F R P Propeller Assembly 61 10 20 DRAWINGS AND PARTLISTS Page 11 15 2017 10 06...

Страница 67: ...r ring 3 8 Rivet 2 12 Washer 2 13 Flange bolt 2 14 Selflocking nut 2 15 Screw 2 16 Nut 2 17 Cotter pin 2 18 O ring 2 19 Rear spring guide 2 20 Spring 2 21 Spring 2 22 Pitch change block 2 23 Guide bus...

Страница 68: ...ircraft cockpit Position of the adjusting lever determines loading of the speeder spring This loading represents RPM requested The governor shaft which is driven from engine gear box and which RPM are...

Страница 69: ...tch and maximum reverse at control of engine power simultaneously For the propeller governors LUN 7815 01 and 02 the engine power increases up to maximum reverse power depending on the blade position...

Страница 70: ...d propeller moves to feather This action is indicated by feathering lamp in the cockpit After engine restart and idle setting the propeller moves out from feather position b Automatic feathering Actio...

Страница 71: ...AND 12 5 LOCKING WIRE AND COTTER PIN LEFT THREAD IS MARKED WITH L THE STOP FIGURE 12 4 MUST HAVE THE SAFETY WIRE ACROSS THE HEXAGON HEAD OF THE BOLT STOP MUST NOT BE RELEASED AND RE ADJUSTED IT IS ADJ...

Страница 72: ...r LUN7815 02 View from propeller 6 Remove cotter pin nut and remove pin from rod Sv 65 Then place the rod out from slotted piece Sv see figure 12 4 7 Secure with suitable manner the rod Sv 65 against...

Страница 73: ...bricate the bearings of elements 29 32 and 65 and other appropriate surfaces with Aeroshell Grease 5 6 or 22 Figure 12 6 Carbon block assembly 13 Verify function of the pilot valve locking by pressing...

Страница 74: ...procedure NOTE Refer to figure 12 8 a Remove the safety wire from the turning screw Loosen the turning screw to allow rotation of the fitting Do not remove NOTE The turning screw could be modified wit...

Страница 75: ...2 11 4 Verify seals and securing figures 12 9 12 10 CAUTION BE CAREFUL AT SECURING ELEMENT 32 FIGURES 12 10 AND 12 11 LOCKING WIRE AND COTTER PIN LEFT THREAD IS MARKED WITH L THE STOP FIGURE 12 10 MUS...

Страница 76: ...INSTALLATION MANUAL Figure 12 9 Governor LUN7815 03 View to engine Figure 12 10 Governor LUN7815 03 View from engine 61 10 20 PROPELLER CONTROL SYSTEM Installation With Jihostroj LUN Series Governor...

Страница 77: ...IFIED WITH GOVERNOR S N 13 If the propeller is installed remove carbon block assembly from lever Zv figure 12 6 CAUTION DO NOT INSTALL THE GOVERNOR WITH THE CARBON BLOCK ASSEMBLY INSTALLED WHEN THE PR...

Страница 78: ...ng figures 12 12 12 13 CAUTION BE CAREFUL AT SECURING ELEMENT 32 FIGURES 12 13 AND 12 14 LOCKING WIRE AND COTTER PIN LEFT THREAD IS MARKED WITH L NOTE Parts 15 16 and 32 are adjustable 5 With Bc lever...

Страница 79: ...LLATION MANUAL EN 1320 Figure 12 12 Governor LUN7816 View to engine Figure 12 13 Governor LUN7816 View from engine 61 10 20 PROPELLER CONTROL SYSTEM Installation With Jihostroj LUN Series Governor Pag...

Страница 80: ...ler is not in feather move it to feather by turning blades to move the beta ring that it seats at the propeller hub CAUTION CATCH THE BLADES AT ITS SHANK NEVER AT BLADE TIP NOTE It is recommended to m...

Страница 81: ...p figure 12 12 and secure 21 Connect plug to the beta switch and secure 22 Adjust the governor according to procedure in this section 12 5 GOVERNOR REMOVAL FROM ENGINE 1 Disconnect control rod from go...

Страница 82: ...lade shank in flight direction to eliminate axial play and keep this arrangement during adjustment e Insert gage 1531 042 engine toolkit between stop and stop pin figure 12 15 When the clearance betwe...

Страница 83: ...e 12 18 guideline at the lever aligns with reverse range at governor scale WARNING IT IS FORBIDDEN TO MOVE ENGINE CONDITION LEVER INTO REVERSE POSITION WHEN PROPELLER CONDITION LEVER IS NOT IN MAXIMUM...

Страница 84: ...deline on the lever with cam aligns with guideline Sv onto the governor scale figure 12 19 If the guidelines are not aligned loosen rod safety nut which is at yoke side with wrench Sv 1532 924 from en...

Страница 85: ...fter removing the carrier of the slide blocks or with help of two mechanics by manual adjustment of the propeller blades Set the propeller control lever in the cockpit to position feather carbon block...

Страница 86: ...stment c Adjust maximum reverse power according to engine operational manual d Place the engine condition lever to maximum reverse position after reverse power adjustment Guideline on the cam lever sh...

Страница 87: ...f the propeller is not in feather position feather it Figure 12 22 Dimension Y adjustment Figure 12 23 Lever Bc basic position b Remove lock wire at both ends of 32 securing both nuts to the rod and l...

Страница 88: ...48 mm 0 1764 inch 3 4 8 21 mm 0 3232 inch AV 803 1 E C F R W 7 0 4 48 mm 0 1764 inch 3 4 8 21 mm 0 3232 inch AV 725 1 E C F R W 7 0 4 48 mm 0 1764 inch 3 4 8 21 mm 0 3232 inch Table 12 2 Minimum flig...

Страница 89: ...gaged carrier of the slide blocks CAUTION HOLD BLADES NEAR BLADE SHANK NEVER AT BLADE TIP c Make sure that during the reverse motion to the initial position after breaking the electric circuit the top...

Страница 90: ...erify at the governor where linkage to the lever Bc is not connected following items 1 Lever Sv touching the idle stop verify with feeler gauge 0 05 mm 0 002 inch for compression figure 12 25 2 At the...

Страница 91: ...ual Then recheck stops for idle and maximum reverse position i Slip the lever Sv to its original position after adjustment and reinstall the screw with securing washer tighten and secure NOTE Attend t...

Страница 92: ...UTION IF THE ENGINE CONDITION LEVER IS PLACED OVER IDLE STOP INTO BETA RANGE DON T MOVE THE PROPELLER CONDITION LEVER INTO FEATHER POSITION AND VICE VERSA f Place the engine condition lever into maxim...

Страница 93: ...n 12 6 Figure 12 28 Governor LUN7815 03 Basic adjustment check 3 Propeller control system ground testing for governors LUN7815 02 LUN7815 03 Perform after engine propeller or propeller governor exchan...

Страница 94: ...ion for period sufficient to read operational values Verify power in reverse mode of operation with engine operational manual 4 Observe switching on the BETA lamp during transition into reverse NOTE R...

Страница 95: ...placed in maximum RPM position and then the lever Rn must be at maximum RPM stop 15 b Place the propeller condition lever into the feather position and fix the lever Rn must be located at its feather...

Страница 96: ...ver propeller RPM to 1900 rpm then reduce propeller RPM to 1700 rpm using propeller control lever and back to previous position 3 Propeller speed must be adequate to position of propeller control leve...

Страница 97: ...rol lever propeller speed to 1900 rpm c Switch on the FEATHERING breaker d Press TEST FEATHERING button e Observe FEATHERING PUMP switching on f Immediately after energizing the FEATHERING PUMP lamp r...

Страница 98: ...ify this adjustment at next flight g Make a record in the logbook Figure 12 29 Maximum RPM stop adjustment 2 Feather position adjustment for governor LUN7815 02 Governor feather position adjustment is...

Страница 99: ...n i Loose and move propeller control lever to maximum RPM stop and turn counterclockwise the stop 16 another 0 75 1 turn NOTE This additional turning with the stop 16 by 0 75 1 turn ensures clearance...

Страница 100: ...RPM adjustment for governor LUN7815 02 LUN7815 03 twin engine aircrafts a Minimum flight angle and thus idle RPM is adjustable with the stop 58 b Perform this adjustment only if 1 Difference in idle...

Страница 101: ...f the stop 58 CAUTION TURNING WITH THE STOP 58 FOR MORE THAN 1 TURN IS NOT PERMITTED i Hold the screw in adjusted position with suitable wrench use the second wrench to tighten the securing nut and ag...

Страница 102: ...ircrafts a Perform this adjustment only if difference in idle RPM between propellers is higher than 40 rpm b Check basic adjustment for both governors according to process in section 12 6 c If the val...

Страница 103: ...kage between governor and gear box flange Probably cause a Loose mounting bolts b Defective sealing between the flanges Remedy a Tighten mounting bolts b Replace the sealing Trouble Leakage at turning...

Страница 104: ...12 34 NOTE For governor LUN7816 it concerns check of relief valve pressure for the valve No 1 RV I Loose and unscrew the nut 59 with ball 60 from the turning screw 78 Connect measuring hose 114 with...

Страница 105: ...fig 12 35 using a suitable wrench to prevent the valve body from turning then use a suitable wrench to remove the relief valve body cover 72 fig 12 35 WARNING The relief valve spring 75 fig 12 35 is...

Страница 106: ...ndard procedure If defective sealing is the cause remove lock wire hold the relief valve body 71 to fix it and remove the cover 72 NOTE Be careful when removing the cover to don t loose washers 73 and...

Страница 107: ...th the nut 59 and both tube cap nuts with lock wire using standard locking procedure Secure also the second end of the tubes Figure 12 36 Sealing ring replacement 6 Replacement of non return valve bod...

Страница 108: ...Remove the cotter pin 55 and the pin 52 with washer 54 from the lever Zv 21 Remove the worn carbon block assembly 22 Figure 12 38 Carbon block assembly Inspect the new carbon block assembly 22 from sp...

Страница 109: ...governor documentation Check the calendar time since overhaul TSO in the governor manufacturer s documents If required preservation and storage time is out of TSO limit follow governor manufacturer s...

Страница 110: ...t te em m f fu ul lf fi il ll le ed d r re eq qu ui ir re em me en nt ts s o of f t th he e E Eu ur ro op pe ea an n A Av vi ia at ti io on n S Sa af fe et ty y A Ag ge en nc cy y E EA AS SA A O Ou ur...

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