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JLG 80HX, Руководство по техническому обслуживанию

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SECTION 2 - PROCEDURES

3120863

– JLG Lift –

2-11

2.9

CYLINDER REPAIR

NOTE:

The following are general procedures that apply to
all of the cylinders on this machine. Procedures that
apply to a specific cylinder will be so noted.

NOTE:

See Figure 2-5., Figure 2-6., Figure 2-7., and Figure
2-8. for the breakdown of typical hydraulic cylinders
used on this machine.

Disassembly

DISASSEMBLY OF THE CYLINDER SHOULD BE PERFORMED ON
A CLEAN WORK SURFACE IN A DIRT FREE WORK AREA.

1.

Connect a suitable auxiliary hydraulic power source
to the cylinder port block fitting.

DO NOT FULLY EXTEND THE CYLINDER TO THE END OF THE
STROKE. RETRACT THE CYLINDER SLIGHTLY TO AVOID TRAP-
PING PRESSURE. 

2.

Operate the hydraulic power source and extend the
cylinder. Shut down and disconnect the power
source. Adequately support the cylinder rod, if appli-
cable.

ON CYLINDERS WITH DOUBLE HOLDING VALVES, BEFORE
REMOVING HOLDING VALVES, CRACK THE BLEEDERS TO
RELEASE PRESSURE. 

3.

If applicable, remove the cartridge-type holding
valve and fittings from the cylinder port block. Dis-
card the o-rings.

NOTE:

    Step 4 applies only to the Telescope Cylinder.

4.

Remove the nuts which attach each cylinder rod
support block pull rod and withdraw the rods from
the forward end of the telescope cylinder.

5.

Place the cylinder barrel into a suitable holding fix-
ture. Tap around the outside of the cylinder head
retainer with a suitable hammer to shatter the loctite
seal.

6.

Using a suitable spanner wrench, loosen the cylin-
der head retainer, if applicable, and/or cylinder head
gland, and remove from cylinder barrel.

7.

Attach a suitable pulling device to the cylinder rod
port block end or cylinder rod end, as applicable.

EXTREME CARE SHOULD BE TAKEN WHEN REMOVING THE CYL-
INDER ROD, HEAD, AND PISTON. AVOID PULLING THE ROD OFF-
CENTER, WHICH COULD CAUSE DAMAGE TO THE PISTON AND
CYLINDER BARREL SURFACES. 

8.

With the barrel clamped securely, apply pressure to
the rod pulling device and carefully withdraw the
complete rod assembly from the cylinder barrel.

Figure 2-4.  Cylinder Barrel Support

Содержание 80HX

Страница 1: ...CE JLG INDUSTRIES EUROPE Kilmarting Place Tannochside Park Uddingston Scotland G71 5PH Telephone 01698 811005 Main Fax 01698 811055 Parts Fax 01698 811455 CORPORATE OFFICE JLG INDUSTRIES INC 1 JLG Dri...

Страница 2: ......

Страница 3: ...that the machines hydraulic systems operate at extremely high potentially dangerous pressures Every effort should be made to relieve any system pres sure prior to disconnecting or removing any portio...

Страница 4: ...INTRODUCTION A 2 JLG Lift 3120863 REVISON LOG October 1997 Original Issue March 1 1999 Revised September 7 2000 Revised May 14 2002 Revised...

Страница 5: ...formance Data 1 2 Travel Speed 1 2 Gradeability 1 2 Turning Radius Outside 1 2 Boom Speed Telescope 1 2 Boom Speed Lift 1 2 Swing Speed 360 1 2 Boom Elevation 1 2 Machine Weight 1 2 Machine Stowed Hei...

Страница 6: ...sting Procedures 2 6 Inspection Procedures 2 7 Auxiliary Boom Chains 2 8 2 7 Wear Pads 2 9 2 8 Cylinder Checking Procedure 2 9 Cylinders Without Counterbalance Valves Steer Cylinder and Master Cylinde...

Страница 7: ...rollers 2 60 PQ 2 60 OEM 2 60 VICKERS All Hydraulic 2 60 2 23 Oscillating Axle Bleeding Procedure 2 60 Lockout Cylinder Bleeding Without Holding Valves 2 60 Lockout Cylinder Bleeding With Holding Valv...

Страница 8: ...rs Proportional Valve Pressure Setting Mid 1992 to Present Sheet 4 of 4 2 36 2 22 Pressure Setting All Hydraulic Machines Sheet 1 of 4 2 37 2 23 Pressure Setting All Hydraulic Machines Sheet 2 of 4 2...

Страница 9: ...Specifications 1 11 1 9 Critical Stability Weights 1 11 2 1 Chain Stretch Tolerance 2 8 2 2 Cylinder Piston Nut Torque Specifications 2 19 2 3 Holding Valve Torque Specification 2 19 2 4 Preventive M...

Страница 10: ...vi JLG Lift 3120863 TABLE OF CONTENTS Continued THIS PAGE LEFT BLANK INTENTIONALLY...

Страница 11: ...Battery 85 Amphour 550 CCA 12 VDC Horsepower 70 2400 RPM no load Tires Foam Filled Tires 15 x 19 5 Drive Motor Displacement Machines Built Prior to Jan 1992 Cessna 82 6 cc rev Vickers 41cc rev 2 Speed...

Страница 12: ...ve Level Telescope Steer Rotate 36 LPM Clockwise Rotation Machines with Vickers Valves First Section to Proportional Valve Drive Lift Swing 57 LPM Second Section to High Drive 34 LPM Third Section to...

Страница 13: ...8484 0 5740 0 4623 0 3604 0 2700 0 1969 0 1331 0 0925 0 0508 0 0808 0 0445 0 0356 0 0232 0 0153 0 0374 0 0258 0 0168 2 7254 2 1742 1 6840 1 2929 0 9474 0 6502 0 5156 0 4061 0 3015 0 2230 0 1473 3 1750...

Страница 14: ...es as they may not contain the same required additives or be of comparable viscosities If use of hydraulic oil other than Mobilfluid 424 is desired contact JLG Indus tries for proper recommendations T...

Страница 15: ...x 213 Operating Temp 0 180 F 17 162 C Note Must be stored above 32 F 14 C Table 1 4 Mobil DTE 13M Specs Type Petroleum Base ISO Viscosity Grade 32 Specific Gravity 877 Pour Point Max 40 F 40 C Flash P...

Страница 16: ...SECTION 1 SPECIFICATIONS 1 6 JLG Lift 3120863 Figure 1 2 Lubrication Diagram...

Страница 17: ...tting A R MPG X Gainaccessthroughboomflysection 4 Platform Pivot 1GreaseFitting A R MPG X 5 Rotating Column Optional 2GreaseFittings A R MPG X 6 Rotary Worm Gear Optional N A A R MPG X Brushon 7 Platf...

Страница 18: ...R MPG X 23 King Pins 2GreaseFittings A R MPG X 24 Steer Cylinder Rod End 1GreaseFitting A R MPG X 25 Steer Cylinder Barrel End 1GreaseFitting A R MPG X 26 Wheel Bearings N A A R MPG X Repack 27 Swing...

Страница 19: ...k Slave Cylinder Pivot Point If Equipped 1GreaseFitting A R MPG X NOTES KEYTOLUBRICANTS Lubricationintervalsarebasedon machineoperationunder normalconditions Formachinesusedinmultishiftoperationsand o...

Страница 20: ...ar Pressure Reducing Pilot Press 41 Bar Hyd Controls Back Pressure Relief 8 6 Bar Press Red 5 5 to 8 2 Bar Drive 214 Bar Prop Tele 259 Bar Lift Up 207 Bar Lift Down 103 Bar Swing 103 Bar Telescope In...

Страница 21: ...ne 4WDNoOptions 29106 13200 CompleteMachine 80HX 6 2WDNoOptions 31856 14447 Table 1 8 Cylinder Specifications DESCRIPTION BORE STROKE ROD DIA Master Level 63 5 mm 387 mm 31 75 mm Slave Level 63 5 mm 3...

Страница 22: ...e serial number plate is damaged or miss ing the machine serial number is stamped on the left side of the frame between front and rear wheels below turnta ble bearing In addition the last five digits...

Страница 23: ...his Shields covers seals and filters are provided to keep air fuel and oil supplies clean however these items must be maintained on a scheduled basis in order to function properly 2 At any time when a...

Страница 24: ...ting or removing them from the unit This will assure that they are correctly reinstalled Hydraulic System 1 Keep the system clean If evidence of metal or rub ber particles are found in the hydraulic s...

Страница 25: ...der any condi tion Changing Hydraulic Oil 1 Use of any of the recommended crankcase or hydraulic oils eliminates the need for changing the oil on a regular basis However filter elements must be change...

Страница 26: ...urns to neutral prohibiting any flow through the circuit Proportional Control Valve Vickers See Figure 2 1 CMX series valves provide a power output matching that required by the load A small line conn...

Страница 27: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 5 Figure 2 1 Proportional Control Valve...

Страница 28: ...s Inc requires a complete boom disassem bly per instructions outlined in Section 2 12 Boom Main tenance every two years All boom chains and related components i e sheaves pins sprockets wear pads etc...

Страница 29: ...ion Rust and corrosion will cause a major reduction in the load carrying capacity of the chain because these are primary reasons for side plate cracking The initial lubrication at the factory is appli...

Страница 30: ...ors sheaves and pins Check chain anchors for wear breakage and misalignment Anchors with worn or broken fingers should be replaced They should also be adjusted to eliminate twisting the chain for an e...

Страница 31: ...Shut down the engine 2 Carefully disconnect the hydraulic hose from the retract port of the cylinder There will be initial weep ing of hydraulic fluid which can be caught in a suit able container Afte...

Страница 32: ...he boom prop from beneath the boom activate the hydraulic system and run the cyl inder through one complete cycle to check for leaks Cylinders With Dual Counterbalance Valves Platform Slave Level Cyli...

Страница 33: ...O RELEASE PRESSURE 3 If applicable remove the cartridge type holding valve and fittings from the cylinder port block Dis card the o rings NOTE Step 4 applies only to the Telescope Cylinder 4 Remove th...

Страница 34: ...SECTION 2 PROCEDURES 2 12 JLG Lift 3120863 Figure 2 5 Typical Hydraulic Cylinders Sheet 1 of 4...

Страница 35: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 13 Figure 2 6 Typical Hydraulic Cylinders Sheet 2 of 4...

Страница 36: ...SECTION 2 PROCEDURES 2 14 JLG Lift 3120863 Figure 2 7 Typical Hydraulic Cylinders Sheet 3 of 4...

Страница 37: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 15 Figure 2 8 Typical Hydraulic Cylinders Sheet 4 of 4...

Страница 38: ...ring grooves in the piston for burrs and sharp edges Dress applicable surfaces as necessary 8 Inspect the cylinder head inside diameter for scoring or other damage and for ovality and tapering Replace...

Страница 39: ...ully install the head gland on the rod ensuring that the wiper and rod seals are not damaged or dis lodged Push the head along the rod to the rod end as applicable 4 Carefully slide the piston spacer...

Страница 40: ...ation of any holding valve or valves 19 If applicable install the cartridge type holding valve and fittings in the rod port block using new o rings as applicable See Table 2 3 Holding Valve Torque Spe...

Страница 41: ...runnion pin covers from each side of the base boom 8 Remove the capscrews securing the trunnion pins from each side of the boom 9 Using a suitable slide hammer remove the trunnion pins attaching the t...

Страница 42: ...justing eyebolt 5 Attach the cylinder rod support bracket to the rod support block on the telescope cylinder 6 Install the chain adjust block with four 4 lock washer and bolts to the base boom section...

Страница 43: ...pin through the aligned holes taking care to align the grooved pin holes Secure the pin in place with attaching hardware 5 Remove the boom prop and overhead crane Acti vate the hydraulic system 6 Usi...

Страница 44: ...SECTION 2 PROCEDURES 2 22 JLG Lift 3120863 Figure 2 12 Boom Assembly Sheet 1 of 2...

Страница 45: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 23 Figure 2 13 Boom Assembly Sheet 2 of 2...

Страница 46: ...m base section as follows a Remove the jam nut and nut which secures the chain attachment clevis bolt to the chain adjust ment block b Remove the bolts and washers which secure the extension chain att...

Страница 47: ...ction on a suitable trestle 18 Remove the bolts which secure the wear pads to the aft ends of the fly and mid sections remove the wear pads from the boom sections Inspection 1 Inspect all sheaves exte...

Страница 48: ...e attach holes secure the clevis pin with a new cotter pin Place the chain block weldment in position at the aft end of the fly section secure the weldment by installing the bolts and washers WHEN ASS...

Страница 49: ...tween the clevis plates ensuring the attachment points are prop erly aligned Secure the block in position with bolts nuts and new cotter pins c Align the retraction chains with the clevis attach block...

Страница 50: ...ing the performance of the retraction cycle If chattering is apparent the retract chain system requires adjustment 11 Shut down all machine systems 12 Adjust the extend and retract chain systems as re...

Страница 51: ...repeat step 4 above 2 14 LIMIT SWITCH ADJUSTMENTS Boom Limit Switch The boom limit switch is located on the left side of the base section of the boom The switch will activate when the boom is extended...

Страница 52: ...gine limit switch at 1800 RPM Shut down engine 2 With the aid of an assistant start engine from basket and allow to come up to operating temperature Dis connect proportional dump valve wire Activate f...

Страница 53: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 31 Figure 2 16 Adeco Actuator Adjustments F4L912...

Страница 54: ...Too much air gap will result in loss of auxiliary power operation and less than full spool shift too little air will result in erratic operation it may be checked and adjusted using the procedure bel...

Страница 55: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 33 Figure 2 18 Vickers Proportional Valve Pressure Setting Mid 1992 to Present Sheet 1 of 4...

Страница 56: ...SECTION 2 PROCEDURES 2 34 JLG Lift 3120863 Figure 2 19 Vickers Proportional Valve Pressure Setting Mid 1992 to Present Sheet 2 of 4...

Страница 57: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 35 Figure 2 20 Vickers Proportional Valve Pressure Setting Mid 1992 to Present Sheet 3 of 4...

Страница 58: ...SECTION 2 PROCEDURES 2 36 JLG Lift 3120863 Figure 2 21 Vickers Proportional Valve Pressure Setting Mid 1992 to Present Sheet 4 of 4...

Страница 59: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 37 Figure 2 22 Pressure Setting All Hydraulic Machines Sheet 1 of 4...

Страница 60: ...SECTION 2 PROCEDURES 2 38 JLG Lift 3120863 Figure 2 23 Pressure Setting All Hydraulic Machines Sheet 2 of 4...

Страница 61: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 39 Figure 2 24 Pressure Setting All Hydraulic Machines Sheet 3 of 4...

Страница 62: ...SECTION 2 PROCEDURES 2 40 JLG Lift 3120863 Figure 2 25 Pressure Setting All Hydraulic Machines Sheet 4 of 4...

Страница 63: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 41 Figure 2 26 Solenoid Valve Pressure Settings Machines Built to Present...

Страница 64: ...SECTION 2 PROCEDURES 2 42 JLG Lift 3120863 Figure 2 27 Solenoid Valve Pressure Settings 4 Wheel Steer...

Страница 65: ...SECTION 2 PROCEDURES 3120863 JLG Lift 2 43 Figure 2 28 Extend A Reach Valve Pressure and Speed Settings...

Страница 66: ...eler gauge between the bolt head and hardened washer at the arrow indicated position 3 Assure that the 0 0015 feeler gauge will not pene trate under the bolt head to the bolt shank 4 Swing the turntab...

Страница 67: ...any of the following conditions exist the bearing should be removed disassembled and inspected for the following a Metal particles in the grease b Increased drive power required c Noise d Rough rotati...

Страница 68: ...SECTION 2 PROCEDURES 2 46 JLG Lift 3120863 Figure 2 32 Swing Bearing Torquing Sequence...

Страница 69: ...With seal removed outside bearing cone 4 can be removed 10 If necessary remove inner and outer bearing cones 3 5 using a suitable slide hammer puller WHEN REBUILDING TORQUE HUB REMOVE AND REPLACE ALL...

Страница 70: ...SECTION 2 PROCEDURES 2 48 JLG Lift 3120863 Figure 2 33 Torque Hub Assembly...

Страница 71: ...ct cap over cover cap with nipple fac ing out and secure with two bolts Torque bolts to 8 9 NM 11 Turn cover over and push disconnect rod into cover cap Rod will be held in place by friction from o ri...

Страница 72: ...n carrier outside diameter 13 While keeping thrust washers in place slide cluster gear into carrier with larger gear on side with small pin hole 14 Line up cluster gear and thrust washers with hole in...

Страница 73: ...r Clean ing and Inspection 4 Place washer 31 spring 32 and washer 31 in that order onto input shaft 5 Install retaining ring into input shaft groove to secure spacers and spring to shaft Assembly 1 Us...

Страница 74: ...f spindle and against bearing cone EYE PROTECTION SHOULD BE WORN DURING RETAINING RING INSTALLATION 7 Install new retaining ring 9 completely into spindle groove and against bearing shim Ensure retain...

Страница 75: ...er reamed holes in the face of the hub mark them for later identification 14 Place o ring 22 into hub counterbore Use petro leum or grease to hold o ring in place Slight stretch ing of o ring may be n...

Страница 76: ...es in hub NOTE If gears do not mesh easily or carrier assembly does not rotate freely then remove carrier and ring gear and check cluster timing 18 Install input gear 37 into carrier meshing with smal...

Страница 77: ...uce spring tension 2 Remove power plate 21 and gasket 2 3 Bearing 18 is pressed onto shaft 7 and must be removed before removal of rotating discs 11 and stationary discs 12 4 Further disassembly is no...

Страница 78: ...SECTION 2 PROCEDURES 2 56 JLG Lift 3120863 Figure 2 34 Drive Brake Ausco Machines Built Prior to 1992...

Страница 79: ...e replaced 4 Press bearings 3 into housing 1 Bearing must be seated against shoulder in housing 5 Using a shop press install seal 4 by pressing evenly around O D of seal Use care to avoid cock ing 6 I...

Страница 80: ...SECTION 2 PROCEDURES 2 58 JLG Lift 3120863 Figure 2 35 Drive Brake Mico Machines Built from 1992 to Present...

Страница 81: ...ote direction of seal 3 Install new bearing 2 and retaining ring 15 on shaft 4 4 Insert shaft assembly and retaining ring 3 in hous ing 7 5 Insert dowel pins 17 spring guide 16 and springs 5 6 in hous...

Страница 82: ...cm off the ground 7 Use a bar as a lever to press down on the cam valve plunger which will allow the axle to fully oscillate against the stop 8 With the aid of an assistant start the engine from groun...

Страница 83: ...4 Place DRIVE control lever to FORWARD position and carefully drive machine up ascension ramp until left front wheel is on top of block 5 Carefully activate SWING control lever and position boom over...

Страница 84: ...es with Lithium Soap Base Grease TEXACO CODE 1912 OR EQUIVALENT prior to assembly 2 30 DUAL FUEL SYSTEM IT IS POSSIBLE TO SWITCH FROM ONE FUEL SOURCE TO THE OTHER WITHOUT ALLOWING THE ENGINE TO STOP E...

Страница 85: ...inspection be performed in accordance with the Annual Machine Inspection Report form Forms are supplied with each new machine and are also available from JLG Customer Service Form must be completed an...

Страница 86: ...1 4 2 Platform Gate 1 4 12 3 Platform Rotator 5 11 4 Footswitch 1 11 5 Controllers 1 11 6 Switches 1 11 7 Placards and Decals 1 2 8 Control Tags 1 2 9 Valves 1 11 5 6 10 Carrier Hoses and Cables 1 4 8...

Страница 87: ...raulic Pump 1 5 10 Auxiliary Power Pump 1 5 11 Valves 1 11 5 12 Hydraulic Filters 14 5 13 Hydraulic Hoses 1 5 14 Hydraulic Oil Tank 3 5 4 15 Breather Hydraulic Tank 6 14 16 Fuel Tank 3 5 4 17 Cylinder...

Страница 88: ...acity Indicator Boom Tape Replacement Replacement of boom tape is required when tape is illegi ble or missing THE LOCATION DIMENSIONS AND COLORS ARE CRITICAL FOR AN ACCURATE READING OF THE CAPACITY IN...

Страница 89: ...he equipment and related systems It should also be recognized that the majority of the prob lems arising in the machine will be centered in the hydrau lic and electrical systems For this reason every...

Страница 90: ...Wornseal s inslavelevelormainliftcylinder Replaceseal s Damagedslavelevelormainliftcylinder Repairorreplacecylinder Noresponsetoplatformlevelingcontrols Levelfunctionnotactivatedwithin7seconds afterfo...

Страница 91: ...eliverytoandfromvalveand repairorreplaceasnecessary Valveleaking Dirtorotherforeignmaterialunderseal Removeandrepairvalveasnecessary Valvespoolscored Removevalveandrepairorreplaceasneces sary Excessiv...

Страница 92: ...assvalve dump notfunctioning Repairorreplacevalve Liftcylindernotfunctioningproperly Repairorreplacecylinder Bindingliftcylinderorboompivotpin Repairorreplacecylinderorpin Boomwillnotlower See Boomwil...

Страница 93: ...stemoillow Replenishoilasnecessary Damagedwiringoncontrolswitchorsolenoid valve Repairorreplacewiring Controlvalvenotfunctioningproperly Repairorreplacevalve Restrictedorbrokensupplylineonvalvebankor...

Страница 94: ...lylineonvalvebankor hydraulicpump Cleanorreplaceline Controlvalvenotfunctioningproperly Repairorreplacevalve Swingmotornotfunctioningproperly Repairorreplacemotor Restrictorvalve s plugged Cleanorrepl...

Страница 95: ...cantonswinggearorspeedreducer pinion Lubricateasrequired SeeLubricationChart Swingmotornotfunctioningproperly Repairorreplaceswingcontrolswitch Wornorbrokenteethonswinggearorswing motorpinion Replaceg...

Страница 96: ...Valvespoolscored Removevalveandrepairorreplaceasneces sary Returnspringweakorbroken Removevalveandrepairorreplaceasneces sary Reliefvalvemalfunctioningcausingexcessive pressurewithinvalve Checkpressu...

Страница 97: ...anandtightencable s Startlockoutnotworking Seewiringdiagram Checkrelay Enginewillnotstart ignitionOK Nofuel Replenishfuelasnecessary Cloggedfuelfilter Replacefuelfilter Chokesolenoidmalfunction Replac...

Страница 98: ...etor FRONTFRAMEAXLEAREA Oneorbothwheelswillnotsteer Steeringlinkortierodbrokenorattachinghard waremissing Replacesteeringlink tierodorhardwareasnec essary Oneorbothfrontwheelswillnotrotateor rotateerr...

Страница 99: ...rreplaceline Restrictedorbrokenlineonvalvebank Clean repairorreplaceline Drivemotor s notfunctioningproperly Repairorreplacemotor s Airinwheelbrakecircuit Bleedcircuit determineandcorrectcause Fuseisb...

Страница 100: ...ntroller Defectivepump lowoilvolume Repairorreplacepump Poorresponse functionshutsoffslowly whencommandisremoved Lowspoolspringpreload Checkforcorrectspringandshimsinendcaps Stickingspoolduetocontamin...

Страница 101: ...nder Steeringinoperative Damagedwiringoncontrolswitchorsolenoid valve Seeproperwiringdiagram Solenoidvalvenotfunctioningproperly Repairorreplacevalve Controlswitchnotfunctioningproperly Replaceswitch...

Страница 102: ...liefvalvesettoolowornotfunction ingproperly Reset repairorreplacevalveasrequired Steerlinkagesloose Tightenlinkage Steerwheeltoe innotsetproperly Adjusttoe infor1 4inchoverall Spindlebushingsbadlyworn...

Страница 103: ...Replacehydraulicoil Pumpcavitating Vacuuminpumpduetooil starvation Restrictedsuctionline Clean repair orreplaceline Restrictedreservoirairvent Cleanorreplacevent Oilviscositytoohigh Drainsystemandrepl...

Страница 104: ...oHydraulicOils Leakincomponent lineorfitting Repairorreplacecomponent lineorfitting Scoredvalvespool scoredcylinder Replacevalve replacecylinder Amperagetoolowoncontroller Correctlyadjustcontroller Lo...

Страница 105: ...ram Controlswitchnotfunctioningproperly Replaceswitch Restrictedorbrokenhydrauliclineorfitting Clean repairorreplacelineorfitting Pumpmotorsolenoidnotfunctioningproperly Replacesolenoid Pumpmotornotfu...

Страница 106: ...atteryterminals Starterrelayfaultyorfaultyrelayconnections Usingatestmeter checkrelaycoilterminalsfor presenceofelectricalpowerandforenergization ofrelaycoil Alsocheckrelayterminalsforcor rectswitchin...

Страница 107: ...ntiltalarmcircuit Repairorreplacewiring Seeproperwiringdia gram Tiltalarminoperative Replacetiltalarm Tiltalarmnotadjustedproperly Adjusttiltalarm Defectivebulbintiltlight Replacebulb Highenginespeedw...

Страница 108: ...SECTION 3 TROUBLESHOOTING 3 20 JLG Lift 3120863 Figure 3 1 Wiring Schematic Sheet 1 of 4...

Страница 109: ...SECTION 3 TROUBLESHOOTING 3120863 JLG Lift 3 21 Figure 3 2 Wiring Schematic Sheet 2 of 4 1870003A...

Страница 110: ...SECTION 3 TROUBLESHOOTING 3 22 JLG Lift 3120863 Figure 3 3 Wiring Schematic Sheet 3 of 4...

Страница 111: ...SECTION 3 TROUBLESHOOTING 3120863 JLG Lift 3 23 Figure 3 4 Wiring Schematic Sheet 4 of 4 1870003A...

Страница 112: ...SECTION 3 TROUBLESHOOTING 3 24 JLG Lift 3120863 Figure 3 5 Hydraulic Schematic Sheet 1 of 6...

Страница 113: ...SECTION 3 TROUBLESHOOTING 3120863 JLG Lift 3 25 Figure 3 6 Hydraulic Schematic Sheet 2 of 6 2792231...

Страница 114: ...SECTION 3 TROUBLESHOOTING 3 26 JLG Lift 3120863 Figure 3 7 Hydraulic Schematic Sheet 3 of 6...

Страница 115: ...SECTION 3 TROUBLESHOOTING 3120863 JLG Lift 3 27 Figure 3 8 Hydraulic Schematic Sheet 4 of 6 2792231...

Страница 116: ...SECTION 3 TROUBLESHOOTING 3 28 JLG Lift 3120863 Figure 3 9 Hydraulic Schematic Sheet 5 of 6...

Страница 117: ...SECTION 3 TROUBLESHOOTING 3120863 JLG Lift 3 29 Figure 3 10 Hydraulic Schematic Sheet 6 of 6 2792231...

Страница 118: ...SECTION 3 TROUBLESHOOTING 3 30 JLG Lift 3120863 This page left blank intentionally...

Страница 119: ......

Страница 120: ...nson 80 Suite 71 13092 310 Campinas SP Brazil Phone 55 19 3295 0407 Fax 55 19 3295 1025 JLG Europe B V Jupiterstraat 234 2132 HJ Foofddorp The Netherlands Phone 31 23 565 5665 Fax 31 23 557 2493 JLG I...

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