General
Thissectionhasthedescriptionandrepairproceduresforthedriveaxle,wheelbearings,and mountsfortheaxlehousing.Informationforthe
differentialandtheringandpiniongearsisinthe section Single-SpeedPowershiftTransmission, TroubleshootingandRepair 1300SRM501.
Description
Thedriveaxleisheldtothelifttruckbyaxlemounts. SeeFigure1.Theseaxlemountsarefastenedto theframeofthelifttruckbynutsandbolts.The differentialhousingandspindlescanrotateasmall amountintheaxlemounts.Theouterendsofthe spindlesarethemountsforthewheelbearings.The wheelbearingsaretaperedrollerbearingswiththe cupspressedintothehub/brakedrum.Thenuton theendofthespindleholdsandadjuststhewheel
REMOVEANDDISASSEMBLE
WARNING
bearings.Theaxleshaftsarefastenedtothehubs bycapscrews.
Thebackplateandbrakeassemblyarefastenedto theaxlehousingmounts.Theaxlehousingmounts arealsothehangersforthemast.
Theouterwheelbearingislubricatedwithgearoil fromthedifferentialhousing.Theinnerwheelbearingislubricatedwithwheelbearinggrease.
DriveAxleRepair
Neverloosenthenutsthatholdtheinnerand outerwheelhalvestogetherwhenthereisair pressureinthetire.
Whenputtingthelifttruckonblocks,make surethesurfaceissolid,even,andlevel.Any blocksusedtosupportthelifttruckmustbe solid,one-pieceunits.
1. Putblocksoneachside(frontandback)ofthe steeringtirestopreventmovementofthelift truck.SeeFigure1.
2. Raisethelifttruckandputblocksunderthe framesothatthedrivewheelsjusttouchthe floor.Putblocksunderthecounterweightfor stability.
3. Removethemastassemblyasdescribedinthe section Mast, Repairs 4000SRM522.
4. Draintheoilfromthedifferential.
WARNIN G
DeflatetheH2.00-3.20XM(H40-65XM)tires completelybeforeremovingthemfromthelift truck.Airpressureinthetirescancausethe tireandrimpartstoexplodecausingserious injuryordeath.
5. Removethewheels.Removethecapscrewsthat holdtheaxleshaftstothebrakedrums.Remove theaxleshafts.
6. Bendthelockplateandremovethenutfromthe spindle.Removethewasherandbearingcone. Slidethehub/brakedrumfromthespindle.Ifthe assemblycannotberemovedeasily,loosenthe brakeshoes.Putascrewdriverthroughthehole inthebackplatetoturntheadjusterwheeland loosenthebrakeshoes.Pulltheactuatoraway fromtheadjusterwheelwhiletheadjusterwheel isturnedup.
7. Disconnectthebrakelinestothewheelcylinders. Disconnecttheparkingbrakecablesattheparkingbrakelever.Loosenthecableclampsforthe parkingbrakecables.
8. Putblocksunderthedifferentialhousing.Removetheboltsandnutsthatholdtheaxlehousingmountstotheframeofthelifttruck.Remove theaxlehousingmounts.
CLEANANDINSPECT
WARNING
Cleaningsolventscanbeflammableandtoxic andcancauseskinirritation.Whenusing cleaningsolvents,alwaysfollowthesolvent manufacturer’srecommendedsafetyprecautions.
1. Cleanallthepartsofthedriveaxlewithsolvent.
2. Inspectthebearingsandsealsfordamage.The spindlesmustturnfreelyinthemounts.The splinesfortheaxleshaftsmustnotbedamaged.
ASSEMBLEANDINSTALL
1. InstallnewO-ringsonthespindles.SeeFigure1 andFigure3.Installthespindleintothedifferentialhousing.Installthecapscrewsandlockwashers.Tightenthecapscrewsasshowninthe TorqueSpecifications.
2. Assemblethebrakeassemblytothemountfor theaxlehousingasdescribedinthesection BrakeSystem 1800SRM506.
3. LubricatethespindleswithNeverSeez® and slidethemountswiththebrakeassemblyonthe spindle.SeeFigure4.Installandtightenthe boltsandnutsasshownintheTorqueSpecifications.
4. Installnewgreasesealsinthehub.SeeFigure5.Installtheoutersealwiththeliptoward
theouterbearing.Installtheinnerbearingand seal.SeeFigure6.Putwheelbearinggreasein thebearingthatisbetweentheseals.
5. Installthehub/brakedrumassemblyontheaxle housing.
6. Installtheouterbearingconeontheaxlehousing.Installthewasherandlockplate.Install thenut.Tightenthenutto205N•m(150lbfft) torquewhilerotatingthehub.Loosenthenut untilthehubturnsfreely.Thetorquemustbe lessthan25N•m(20lbfft).Tightenthenut to35N•m(25lbfft)oruntilthefirstalignment positionafter35N•m(25lbfft).Bendthelock plateoverthenut.SeeFigure7.
7. Adjusttheclearanceofthebrakeshoesasdescribedinthesection BrakeSystem 1800SRM 506.
8. Installthewheelsandnutsandtightenthenuts forthewheelsasshownintheTorqueSpecifications.
9. Putsealantontheflangeoftheaxleshaft.Installtheaxleshaftsandcapscrews.Tightenthe capscrewsasshownintheTorqueSpecifications.
10. Installandtightenthedrainplug.FillthedifferentialhousingwithSAE90EPgearoilthrough thefillhole.Installthefillplug.Connectthe brakelinesandparkingbrakecables.Remove theairfromthebrakesystemasdescribedinthe section BrakeSystem 1800SRM506.
11. Installthemastasdescribedinthesectionfor Mast, Repairs 4000SRM522.
TorqueSpecifications
BackPlatetoAxleMountCapscrews 225N•m(166lbfft)
WheelCylinderCapscrews 18to27N•m(13to20lbfft)
SpindletoDifferentialHousing 66N•m(49lbfft)
AxleShaftCapscrews 98N•m(75lbfft)
AxleMountstoFrame
325to380N•m(240to280lbfft)Torque wrenchonheadofcapscrew.
WheelNuts 490to510N•m(361to376lbfft)
BackPlatetoAxleMountCapscrews 255N•m(188lbfft)
WheelCylinderCapscrews 18to27N•m(13to20lbfft)
SpindletoDifferentialHousing 90N•m(66lbfft)
AxleShaftCapscrews 90N•m(66lbfft)
AxleMountstoFrame 473N•m(350lbfft)Torquewrenchonnut.
WheelNuts 237to305N•m(175to225lbfft)
Troubleshooting
PROBLEMPOSSIBLECAUSEPROCEDUREORACTION
Thelifttruckwillnotmove.Anaxleshaftisbroken.Installnewaxleshaft.
Thedriveaxlehasleaks.Thedrainorfillplugislooseormissing. Repairthreads.Tightenplug.Install missingpart.
Thesealshavedamage.Installnewseals.
TheO-ringshavedamage.InstallnewO-rings.
Thedriveaxlemakesnoise.Thebearingshavedamage.Installnewparts.
Thebrakeassemblyisdamaged.Repairbrakeassembly. Theoillevelistoolow.Fillasrequired.Checkforleaks. Theaxlecapscrewsareloose.Tightencapscrewstospecified torque.
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General
Thissectionhasthedescriptionandrepairproceduresforthesteeringaxle.Seethefollowingsections foradditionalinformationonthepartsofthesteeringsystem:
•SteeringControlUnit(RossHGF) 1600SRM 257forlifttruckmodelsS/E2.00-3.20XL(S/E4060XL)(A187,B187,C187,andC108)
•SteeringHousingandControlUnit 1600SRM 720forlifttruckmodelsE2.00-3.20XM(E45-65Z) (G108),E2.00-3.20XM(E45-65XM 2)(F108),and V30ZMD(D210/E210)
•SteeringHousingandControlUnit 1600 SRM512forlifttruckmodelsE2.00-3.20XM (E45-65XM)(F108),S2.00-3.20XM(S40-65XM) (D187),andN30XMH,N30XMH 2H (A210,C210)
•HydraulicSystemandGearPump 1900SRM 130forlifttruckmodelsS2.00-3.20XL(S40-60XL) (A187,B187,andC187)
•HydraulicSystem 1900SRM286forlifttruck modelsE2.00-3.20XL(E40-60XL)(C108)
•HydraulicSystem 1900SRM513forlifttruck modelsS2.00-3.20XM(S40-65XM)(D187)
•HydraulicSystem 1900SRM559forlifttruck modelsN30XMH,N30XM 2H(A210,C210), V30ZMD(D210/E210),E2.00-3.20XM(E45-65XM, E45-65XM 2 (F108)andE2.00-3.20XM(E45-65Z) (G108)
•SteeringSystem 1600SRM459forlifttruck modelsS2.00-3.20XL(S40-60XL)(A187,B187, andC187)
•SteeringSystemforElectricLiftTrucks 1600 SRM485forlifttruckmodelsE2.00-3.20XL(E4060XL)(C108),E2.00-3.20XM(E45-65XM 2)(F108), andN30XMH,N30XM 2H(A210,C210)
•SteeringSystemforACElectricLiftTrucks 1600SRM1054forlifttruckmodelsV30ZMD (D210/E210)andE2.00-3.20XM(E45-65Z)(G108)
Description
Thesteeringaxleassemblyincludesanaxleframe, steeringcylinder,andtwospindleassemblies.See Figure1.Thesteeringaxleisarticulatedandisconnectedtotheframebycenterpivotmounts.Thecenterpivotmountspermitthesteeringaxletomove intheframemountwhenthelifttrucktravelsover roughsurfaces.
Theendcapsofthesteeringcylinderarealsothe mountsforthecylinderandareheldtotheshellby themountcapscrews.ThereareO-rings,seals,and wipersintheendcapstosealthecapstotheshell androd.Theendsofthepistonrodextendfromboth endsofthecylinder.Asinglepistonandthesealare atthecenteroftherod.Oilpressureononesideof thepistonmovesthepistoninthebore.Thepiston pushesanequalamountofoilfromtheoppositeside ofthecylinder.
Whenthepistonreachestheendofthestroke,areliefvalveinthesteeringcircuitcontrolstheoilpressure.Thetierodsthatconnectthespindlearmsto thecylinderarenotadjustable.
Eachspindleturnsontwotaperedrollerbearingsin mountsintheaxleframe.Thepreloadonthebearingsiscontrolledbyshimsatthelowerbearingcap. Thewheelsrotateontwotaperedrollerbearingsand areheldonthespindlesbyacastlenut.Thebearing preloadofthewheelsisadjustedbythecastlenut. Thegreasesealsprotectthebearingsfromdirtand water.
1.SPINDLEASSEMBLY
4.RUBBERMOUNT
5.STEERINGCYLINDER
6.NUTANDBOLT