Thisshopmanualmaycontainattachmentsandoptionalequipmentthatarenotavailableinyourarea. PleaseconsultyourlocalKOMATSUdistributorforthoseitemsyoumayrequire.
Materialsandspecificationsaresubjecttochangewithoutnotice.
TheWheelLoaderWA70M-8E0isequippedwiththeengine4D98E-6SHA.
ABBREVIATIONLIST.........................................................................0-2
FOREWORD,SAFETY,BASICINFORMATION.....................................................0-8
HOWTOREADTHESHOPMANUAL....................................................0-8
SAFETYNOTICEFOROPERATION....................................................0-11
PRECAUTIONSTOPREVENTFIRE............................................................0-21
ACTIONSIFFIREOCCURS...................................................................0-23
PRECAUTIONSFORDISPOSINGOFWASTEMATERIALS.........................................0-24
ACTIONSTAKENTOMEETEXHAUSTGASREGULATIONS........................................0-25
PRECAUTIONSFORHANDLINGHYDRAULICEQUIPMENT.........................................0-26
PRECAUTIONSFORDISCONNECTIONANDCONNECTIONOFPIPINGS.............................0-29
PRECAUTIONSFORREMOVALANDDISASSEMBLINGWORK..............................0-29
INTRODUCTIONOFPARTSFORTHEDISASSEMBLYOFTHEFACESEALTYPEHOSESANDTUBES......0-31 INTRODUCTIONOFPARTSFORTHEDISCONNECTIONOFTHETAPERSEALTYPEHOSESANDTUBES...0-31 INTRODUCTIONOFPARTSFORTHEDISCONNECTIONOFTHESPLITFLANGETYPEHOSESANDTUBES.0-32 INTRODUCTIONOFPARTSFORTHEREMOVALOFO-RINGBOSSTYPEJOINT...............0-33 INTRODUCTIONOFPARTSFORTHEREMOVALOFTAPERPIPETHREADTYPEJOINT........0-34
PRECAUTIONSFORINSTALLATIONANDASSEMBLINGWORK.............................0-35
PRECAUTIONSATTHETIMEOFCOMPLETIONOFWORK.................................0-37
PRECAUTIONSFORHANDLINGELECTRICALEQUIPMENT........................................0-40
HANDLINGWIRINGHARNESSESANDCONNECTORS....................................0-40
MAINCAUSESOFFAILUREINWIRINGHARNESS........................................0-40
PRECAUTIONSFORHANDLINGFUELSYSTEMEQUIPMENT...............................0-43 PRECAUTIONSFORHANDLINGINTAKESYSTEMEQUIPMENT.............................0-44 PRACTICALUSEOFKOMTRAX.......................................................0-45
PRECAUTIONSFORDISCONNECTIONANDCONNECTIONOFCONNECTORS................0-47
PRECAUTIONSFORTROUBLESHOOTINGELECTRICALCIRCUITS..........................0-51
METHODFORDISCONNECTINGANDCONNECTINGDEUTSCHCONNECTOR................0-52
METHODFORDISCONNECTINGANDCONNECTINGSLIDELOCKTYPECONNECTOR.........0-53
METHODFORDISCONNECTINGANDCONNECTINGCONNECTORWITHLOCKTOPULL.......0-55
METHODFORDISCONNECTINGANDCONNECTINGCONNECTORWITHLOCKTOPUSH......0-56
METHODFORDISCONNECTINGANDCONNECTINGCONNECTORWITHHOUSINGTOROTATE.0-58
HOWTOREADELECTRICALWIRECODE......................................................0-60
EXPLANATIONOFTERMSFORMAINTENANCESTANDARD.......................................0-62
STANDARDDIMENSIONANDTOLERANCE..............................................0-62
STANDARDCLEARANCEANDSTANDARDVALUE........................................0-63
STANDARDINTERFERENCE..........................................................0-63
REPAIRLIMITANDALLOWABLEVALUEORALLOWABLEDIMENSION.......................0-63
ALLOWABLECLEARANCE............................................................0-64
ALLOWABLEINTERFERENCE.........................................................0-64
STANDARDTIGHTENINGTORQUETABLE......................................................0-65
CONVERSIONTABLE.......................................................................0-73
TEMPERATURE............................................................................0-77
Thislistofabbreviationsincludestheabbreviationsusedin thetextoftheshopmanualforparts,components,andfunctionswhosemeaningisnotimmediatelyclear.Thespelling isgiveninfullwithanoutlineofthemeaning.
Abbreviationsthatareusedingeneralsocietymaynotbe included.
Specialabbreviationswhichappearinfrequentlyarenotedin thetext.
Thislistofabbreviationsconsistsoftwoparts.Thefirstpart isalistoftheabbreviationsusedinthetextofthemanual, andthesecondpartisalistoftheabbreviationsusedinthe circuitdiagrams.
Thesearegeneralabbreviationsoftheseries,whichmay notallbeused.
Listofabbreviationsusedinthetext
Abbrevia-tionActualwordspelledout
ABSAntilockBrakeSystem
Purposeofuse(majorapplicablemachine(*1),orcomponent/system)
Travelandbrake (HD,HM)
AISSAutomaticIdlingSetting System Engine
AJSSAdvancedJoystick SteeringSystem
ARACAutomaticRetarder AcceleratorControl
ARSCAutomaticRetarder SpeedControl
ASRAutomaticSpinRegulator
Steering (WA)
Travelandbrake (HD,HM)
Travelandbrake (HD,HM)
Travelandbrake (HD,HM)
ATTAttachmentWorkequipment
BCVBrakecoolingoilcontrol valve BRAKE (HD)
CANControllerAreaNetworkCommunicationandelectroniccontrol
CDRCrankcaseDepression Regulator Engine
CLSSClosed-centerLoadSensingSystemHydraulicsystem
Explanation
Thisisafunctionthatreleasesthebrakewhenthe tiresskid(tiresarenotrotated).Thisfunctionapplies thebrakeagainwhenthetiresrotate.
Thisisafunctionthatautomaticallysetstheidle speed.
Thisisafunctionthatperformsthesteeringoperationswithaleverinsteadofusingasteeringwheel. Thisfunctionperformsgearshiftingandchanging forwardandreversedirection.
Thisisafunctionthatautomaticallyoperatesthe retarderwithaconstantbrakingforcewhenletting gooftheacceleratorpedalonthedownhill.
Thisisafunctionthatautomaticallyoperatesthe retardertoensurethatthemachinespeeddoesnot accelerateabovethespeedsetbytheopera-tor whenlettinggooftheacceleratorpedalon thedownhill.
Thisisafunctionthatdrivesbothwheelsautomaticallyusingtheoptimumbrakingforcewhenthetire ononesidespinsonthesoftgroundsur-faces.
Afunctionorcomponentthatcanbeaddedtothe standardspecification.
Thisisavalvethatbypassesapartofthebrake coolingoiltoreducetheloadappliedtothehydraulic pumpwhentheretarderisnotbeingused.
Thisisoneofcommunicationstandardsthatare usedinthenetworkonthemachine.
ThisisaregulatorvalvethatisinstalledtoCCVventilator.ItiswrittenasCDRvalveandisnotused independently.
Thisisasystemthatcanactuatemultipleactuators simultaneouslyregardlessoftheload(providesbettercombinedoperationthanOLSS).
Abbreviation
Actualwordspelledout
Purposeofuse(major applicablemachine(*1), orcomponent/system)
CommonRailInjectionEngine
CRI
ECM
ElectronicControl Module
ECMVElectronicControl ModulationValve
ECSSElectronicallyControlled
ECU
EGR
ElectronicControl Unit
Electroniccontrolsystem
Transmission (D,HD,WA,etc)
Travel (WA)
Electroniccontrolsystem
ExhaustGasRecirculation Engine
EMMS EquipmentManagementMonitoringSystem
EPCElectromagneticProportionalControl
FOPS
F-N-R
FallingObjectProtectiveStructure
Machinemonitor
Hydraulicsystem
Cabandcanopy
Explanation
Thisisafunctionthatmaintainsoptimumfuel injectionamountandfuelinjectiontiming.This isperformedtheenginecontrollerwhichelectronicallycontrolssupplypump,commonrail, andinjector.
Thisisanelectroniccontroldevicethatsend thecommandtoactuatorsusingthesignals fromthesensorsonthemachinesothatthe optimumactuationisperformed.(Sameas
Thisisaproportionalelectromagneticvalve thatdecreasesthetransmissionshockbygraduallyincreasingoilpressureforengaging
Thisisadevicethatensuressmoothhighspeedtravelbyabsorbingvibrationofmachine duringtravelwithhydraulicspringeffectof
Thisisanelectroniccontroldevicethatsend thecommandtoactuatorsusingthesignals fromthesensorsonthemachinesothatthe optimumactuationisperformed.(Sameas
Thisisafunctionthatrecirculatesapartof exhaustgastocombustionchamber,sothatit reducescombustiontemperature,andreduces emissionofNOx.
Thisisafunctionwithwhichoperatorcan checkinformationfromeachsensoronthe machine(filter,oilreplacementinterval,malfunctionsonmachine,failurecode,andfailure
ElectromagneticproportionalcontrolThisisa mechanismwithwhichactuatorsoperatein proportiontothecurrent.
Thisstructureprotectstheoperator'sheadfrom fallingobjects.(Fallingobjectprotectivestructure)
ThisperformanceisstandardizedasISO3449.
Forward-Neutral-ReverseOperationForward-Neutral-Reverse
GPS GlobalPositioningSystem Communication (KOMTRAX,KOMTRAX
GNSS GlobalNavigationSatelliteSystem Communication (KOMTRAX,KOMTRAX
HSS
HydrostaticSteering System
HSTHydroStaticTransmission
Steering (DSeries)
Transmission (D,WA)
Thissystemusessatellitestodeterminethe cur-rentlocationontheearth.
Thisisageneraltermforsystemusessatellites suchasGPS,GALILEO,etc.
Thisisafunctionthatenablesthemachineto turnwithoutsteeringclutchbycontrollingadifferenceintravelspeedofrightandlefttracks withacombinationofhydraulicmotorand
Hydraulictransmissionsystemthatusesa combinationofhydraulicpumpandhydraulic motorwithoutusinggearsforsteplessgear
Abbreviation
Actualwordspelledout
Purposeofuse(major applicablemachine(*1), orcomponent/system)
ICTInformationandCommunicationTechnology Communicationandelectroniccontrol
IMAInletMeteringActuatorEngine
IMUInertialMeasurement Unit Engine
IMVInletMeteringValveEngine
CCVClosedCrankcase Ventilation Engine
KCSFKomatsuCatalyzedEngine
DOCKomatsuDieselOxidationCatalyst Engine
DPFKomatsuDieselParticulateFilter Engine
KTCS KomatsuTractionControlSystem Travelandbrake (HM)
LCDLiquidCrystalDisplayMachinemonitor
Explanation
Ageneraltermfortheengineeringandits sociallyappliedtechnologyofinformationprocessingandcommunication.
Thisisavalvethatadjuststhefuelintake amountatthepumpinletinordertocontrolthe supplypumpfueldischargedvolume.(Same
Thisisadevicetodetecttheangle(orangular velocity)andaccelerationofthe3axesthat controlmotions.
Thisisavalvethatadjuststhefuelintake amountatthepumpinletinordertocontrolthe supplypumpcombustiondischargedvolume. (SameasIMA)
Thisisamechanismthatburnstheblowbygas againbyseparatingoilfromblowbygasandreturningittotheintakeside.Itprimarilyconsists offilters.
Thisisafilterthatcapturessootinexhaust gas.
Thisisacatalystthatisusedforpurifyingexhaust gas.
ItisbuiltintoDPForassembledwiththemuffler.
Thisisacomponentthatisusedtopurifythe exhaustgas.DOC(catalyst)andKCSF(filterto capturesoot)arebuilt-init. Itisinstalledinsteadoftheconventionalmuffler.
Thisisafunctionthatperformsbrakingwiththe optimumforceandrecoversthedrivingforceof thewheelsbyactuatingtheinter-axledifferentiallockwhenthewheelsrunsidlewhilethe machinetravelsonthesoftground.
Thisisanimagedisplayequipmentsuchasa monitorinwhichtheliquidcrystalelementsare assembled.
LEDLightEmittingDiodeElectronicpartsThisisasemiconductorelementthatemitslight whenthevoltageisappliedinforwarddirection.
LINLocalInterconnectNetwork
Communicationandelectroniccontrol
LSLoadSensingHydraulicsystem
LVDSLowVoltageDifferential
Communicationandelectroniccontrol
MAFMassAirFlowEngine
Thisisoneofcommunicationstandardsthat areusedinthenetworkonthemachine.
Thisisafunctionthatdetectsdifferentialpressureofpump,andcontrolsdischargedvolume correspondingtoload.
Thisisoneofcommunicationstandardsthat areusedinthenetworkonthemachine.
Thisindicatesengineintakeairflow.Thisisnot usedindependentlybutisusedascombined withsensor.Massairflowsensorcanbecalled asMAFsensor.
Abbreviation
Actualwordspelledout
Purposeofuse(major applicablemachine(*1), orcomponent/system)
MMSMultimediaMessaging Service
Communication
NCNormallyClosedElectricalsystem,hydraulicsystem
NONormallyOpenElectricalsystem,hydraulicsystem
OLSSOpen-centerLoad SensingSystem
PCPressureCompensation
PCCS
Palmcommandcontrolsystem
Hydraulicsystem
Explanation
Thisisaservicethatallowstransmissionand receptionofshortmessagesconsistingofcharactersorvoiceorimagesbetweencellphones.
Thisisacharacteristicofelectricalorhydraulic circuits.Circuitisnormallyclosedifitisnot actuated,anditopenswhenitisactuated.
Thisisacharacteristicofelectricalorhydraulic circuits.Circuitisnormallyopenifitisnotactuated,anditcloseswhenitisactuated.
Thisisahydraulicsystemthatcanoperate multipleactuatorsatthesametimeregardless oftheload.
HydraulicsystemThisisafunctionthatcorrectstheoilpressure.
Steering (DSeries)
PCVPre-strokeControl Valve Engine
PPC
PPM
ProportionalPressure ControlHydraulicsystem
PistonPumpand Motor
Thisisafunctionthatelectricallycontrolsthe engineandtransmissioninanoptimalwaywith thecontrollerinstantlyanalyzingdatafrom levers,pedals,anddials.
Thisisavalvethatadjuststhefuelintake amountatthepumpinletinordertocontrolfuel dis-chargedvolumeofsupplypump.
Thisisasystemthatoperatesactuatorsinproportiontotheoilpressure.
Hydraulicsystem (D,PC,etc)Pistontypehydraulicpumpandmotor.
PTOPowerTakeOffPowertrainsystemPowertake-offmechanism
PTPPowerTiltandpower Pitchdozer
ROPS
Workequipment (DSeries)
Roll-OverProtective Structure Cabandcanopy
SelectiveCatalytic Reduction UreaSCRsystem
SCR
SI
LeSystemeInternationald'Unites(Internationalunitsystem) Unit
Thisisafunctionthatperformshydrauliccontrolofthetiltandpitchofthedozerbladeofthe bull-dozer.
ROPSisaprotectivestructurethatintendedto protecttheoperatorwearingseatbeltfromsufferinginjurywhichmaybecausedifthecabis crushedwhenthemachinerollsover.(Rolloverprotectivestructure)
ThisperformanceisstandardizedasISO3471 orISO12117-2.
Thisisanexhaustgaspurifierusingureawater thatconvertsnitrogenoxides(NOx)intoharmlessnitrogenandwaterbyoxidation-reduction re-action.Itmayalsobementionedasexhaust gaspurificationcatalystorpartofthenameof relateddevices.
Abbreviationfor"InternationalSystemofUnits" Itistheuniversalunitsystemand"asingleunit forasinglequantity"isthebasicprinciple applied.
Thisisanactuatorthatconsistsofasolenoid andanironcorethatisoperatedbythemagneticforcewhenthesolenoidisenergized.
Abbrevia-tionActualwordspelledout
Purposeofuse(major applicablemachine(*1), orcomponent/system)
TOPSTip-OverProtectiveStructureCabandcanopy
Explanation
Thisisaprotectivestructurethatintendedto protecttheoperatorwearingseatbeltfromsufferinginjurywhichmaybecausedifthecabis crushedwhenthemachinetipsover.(Roll-over protectivestructureofhydraulicexcavator) ThisperformanceisstandardizedasISO 12117.
TWV2-WayValveHydraulicsystemThisisasolenoidvalvethatswitchesover directionofflow.
VGTVariableGeometryTurbocharger EngineThisisaturbochargeronwhichthecross-sectionareaoftheexhaustpassageisvariable.
VHPCVariableHorsePower ControlEnginecontrol
*1:Codeforapplicablemachinemodel
D:Bulldozer
HD:Dumptruck
HM:Articulatedumptruck
PC:Hydraulicexcavator
WA:Wheelloader
Thisisafunctionthatfinelycontrolsthemaximumoutputofthemachinesothathighwork efficiencyandlowfuelconsumptionrateare bothachieved.
Listofabbreviationsusedinthecircuitdiagrams
AbbreviationActualwordspelledout
A/CAirConditioner
A/DAnalogue-to-Digital
A/MAirMixDamper
ACCAccessory
ADDAdditional
AUXAuxiliary
BRBatteryRelay
CWClockwise
CCWCounterClockwise
ECUElectronicControlUnit
ECMElectronicControlModule
ENGEngine
EXGNDExternalGround
F.G.FrameGround
GNDGround
IMAInletMeteringActuator
NCNoConnection
S/T
STRGSteering
SIGSignal
SOLSolenoid
STDStandard
OPT
OPOption
PRESSPressure
SPECSpecification
SWSwitch
TEMPTemperature
T/CTorqueConverter
T/MTransmission
Someoftheattachmentsandoptionsdescribedinthisshop manualmaynotbeavailableinsomeareas.Iftheyarerequired,consultyourKomatsudistributor.
Thematerialsandspecificationsaresubjecttochangewithoutnotice.
ShopManualsareavailablefor"machinepart"and"engine part".Fortheengineunit,seetheshopmanualforthemachinewhichhasthesameenginemodel.
Actualmachinemaydifferfromtheimageswhicharecontainedinthismanual.Atypicalmodelisshownintheillustrationsofthisshopmanual.
Thisshopmanualcontainstechnicalinformationnecessaryto performservicesinworkshops.Itisdividedintothefollowing chaptersfortheeaseofuse.
00INDEXANDFOREWORD
Thissectiondescribestheindex,foreword,safety,andbasicinformation.
STRUCTUREANDFUNCTION
Thissectiondescribesthestructureandoperationofeachcomponentwithrespecttoeachsystem."STRUCTUREANDFUNCTION"ishelpfulinnotonlyunderstandingthestructureofeach componentbutperformingtroubleshooting.
Thissectiondescribesthestandardvaluesfornewmachineand failurecriteriafortestingandadjusting,andtroubleshooting.Use thestandardvaluestabletocheckthestandardvaluesfortestingandadjusting,andjudgetroublesintroubleshooting.
Thissectiondescribesthemeasuringtoolsandmeasuring methodsfortestingandadjustingaswellastheadjustingmethodofeachpart.ThestandardvaluesandrepairlimitforTESTINGANDADJUSTINGaredescribedin"STANDARDVALUE TABLE".
40TROUBLESHOOTING
Thissectiondescribestroubleshootingoffailurepartandits remedymethodontheoccurrenceofthefailure.Descriptionsof troubleshootingaresortedbyfailuremode.
50DISASSEMBLYANDASSEMBLY
Thissectiondescribesthespecialtools,workprocedures,and safetyprecautionsnecessaryforremoval,installation,disassembly,andassemblyofthecomponentsandparts.Inaddition, tighteningtorques,quantity,andweightofthecoatingmaterials, lubricants,andcoolantnecessarytotheseworksareshown.
60MAINTENANCESTANDARDS
Thissectiondescribesthemaintenancestandardvalueofeach component.Themaintenancestandardshowsthecriteriaand remediesfordisassemblyandassembly.
80THEOTHERINFORMATION
Thissectiondescribesthestructureandfunction,testingand adjusting,andtroubleshootingforalloftheothercomponentsor equipmentwhichcannotbeseparatelyclassifiedintheappendix.
90Circuitdiagrams
Thissectiondescribeshydrauliccircuitdiagramsandelectrical circuitdiagrams.
Symbols
Importantsafetyandqualityportionsaremarkedwiththefollowingsymbolssothatshopmanualisusedeffectively.
SymbolItem
4 3 2 5 6 ,
Signalword
DangerThissignalindicatesanextremelyhazardoussituationwhichwillresultin deathorseriousinjuryifitisnotavoided.
WarningThissignalindicatesapotentiallyhazardoussituationwhichwillresultin deathorseriousinjuryifitisnotavoided.
CautionThissignalindicatesapotentiallyhazardoussituationwhichwillresultin injuryorpropertydamagearoundthemachineifitisnotavoided.
Weight
Tightening torque
Thissignalindicatestheweightofpartsandcomponents,anditemswhich requiresgreatattentiontoaselectionofwiresandworkingposturefor slingingwork.
Thissignalindicatesthetighteningtorqueforportionswhichrequiresspecialcareinassemblingwork.
CoatThissignalindicatesaplacetobecoatedwithadhesive,grease,etc.in assemblingwork.
OilandcoolantThissignalindicatesaplacetosupplyoil,coolant,etc.andthequantity
DrainingThissignalindicatesaplacetodrainoil,coolant,etc.andthequantity.
SafetyThissymbolindicatestheworkswhichrequirespecialcautionforthe machinesafetywhenassembling.
Signalwordfornoticeandremarkdescribesthefollowing.
SymbolItemRemark
NOTICENoticeIftheprecautionofthissignalwordisnotobserved,themachinedamageorshorteningofservicelifemayoccur.
REMARKRemarkThissignalwordcontainsusefulinformationtoknow.
Unit
InternationalSystemofUnits(SI)isusedinthismanual.Forreference,unitsthathavebeenusedinthepastaregivenin{}.
Appropriateservicingandrepairareextremelyimportantto ensuresafeoperationofthemachine.Theshopmanuals describetheeffectiveandsafeservicingandrepairmethods recommendedbyKomatsu.Someoftheservicingandrepairmethodsrequiretheuseofspecialtoolsdesignedby Komatsuforspecialpurposes.
Thesymbolmarkisindicatedforsuchmattersthatrequirespecialprecautions.Theworkindicatedwiththiswarningmarkshouldbeperformedaccordingtothe instructionswithspecialattention.Shouldahazardoussituationoccurorbeanticipatedduringsuchwork,besureto keepsafefirstandtakeeverynecessarymeasure.
Wellorganizedworkplace
Correctworkclothes
Observanceofworkstandard
Enforcementofhandsignals
Prohibitionagainstunlicensedpersonsoperatingandhandlingthemachine
Safetycheckbeforestartingwork
Wearofdustglasses(forcleaningorgrindingwork)
Wearofweldinggogglesandprotectors(forweldingwork)
Beingingoodphysicalcondition,andgoodpreparation
Alwaysbealertandcareful.
kIfthemachineishandledincorrectly,itisdangerous. Readandunderstandwhatisdescribedintheoperationandmaintenancemanualbeforeoperation.Read andunderstandwhatisdescribedinthismanualbefore operation.
Readandunderstandthemeaningofallthesafetylabels stucktothemachinebeforeperforminganygreasingorrepairs.Forthelocationsofthesafetylabelsanddetailedexplanationofprecautions,seeOperationandMaintenance Manual.
Toolsandremovedpartsintheworkshopshouldbewellorganized.Alwayskeepthetoolsandpartsintheircorrect places.Alwayskeeptheworkareacleanandmakesure thatthereisnodust,dirt,oil,orwateronthefloor.Smoke onlyinthedesignatedareas.Neversmokewhileworking.
Keepalltoolsingoodcondition,learnthecorrectwaytouse them,andusetheproperones.Checkthetools,machine, forklifttruck,servicecar,etc.thoroughlybeforestartingthe work.
Alwayswearsafetyshoesandhelmetwhenperformingany operation.Donotwearlooseclothes,orclotheswithbuttons missing.
Alwaysweartheprotectiveeyeglasseswhenhittingparts withahammer.
Alwaysweartheprotectiveeyeglasseswhengrindingparts withagrinder,etc.
Whenperforminganyoperationwithmultipleworkers,alwaysagreeontheoperatingprocedurebeforestarting.Be clearinverbalcommunicationandobservehandsignals. Hang"UNDERREPAIR"warningtagintheoperator'scompartmentBeforestartingwork.
Workandoperationwhichrequirelicenseorqualification shouldbeperformedbyqualifiedworkers.
Weldingrepairsshouldbeperformedbytrainedandexperiencedwelders.Whenperformingweldingwork,always wearweldinggloves,apron,weldinggoggles,capandother clothessuitedforweldingwork.
Warmupbeforestartingtheworkwithexercisewhichincreasesalertnessandtherangeofmotioninordertopreventinjury.
Avoidprolongedworkandtakearestattimestokeepupa goodcondition.Takearestatdesignatedsafearea.
Placethemachineonafirmandlevelgroundandapplythe parkingbrakeandchockthewheelsortrackstopreventthe machinefrommovingbeforeaddingoilormakinganyrepairs.
Lowertheworkequipment(blade,ripper,bucket,etc.)tothe groundbeforestartingwork.Ifthisisnotpossible,insertthe lockpinoruseblockstopreventtheworkequipmentfrom falling.Inaddition,besuretolockallthecontrolleversand hang"UNDERREPAIR"warningtagonthem.
Whenperformingthedisassemblingorassemblingwork, supportthemachinesecurelywithblocks,jacks,orstands beforestartingthework.
Removeallmudandoilfromthestepsorotherplacesforgoingupanddownonthemachine.Alwaysusethehandrails, laddersorstepswhenforgoingupanddownonthemachine. Neverjumponoroffthemachine.Whenthescaffoldisnot provided,usestepsorstepladdertosecureyourfooting.Do notusehandrails,ladders,orstepsiftheyaredamagedor deformed.Repairitorreplaceitimmediately.
Forthemachinewiththebatterydisconnectswitch,checkbeforestartingtheworkthatthesystemoperatinglampisnotlit. Then,turnthebatterydisconnectswitchtoOFF()position
RemovethekeyafteritisturnedtoOFF()positionifthe batterydisconnectswitchisaswitchkeytype.Forthemachinewithoutthebatterydisconnectswitch,turnthestarting switchtoOFFposition,waitfortwominutesormorebefore startingthework.Disconnectthebatterycablebystarting fromthenegative(-)terminalfirst.
Forthemachinewiththequickreleasebatteryterminal(-), checkbeforestartingtheworkthatthesystemoperatinglamp isnotlit.Then,disconnectthequickreleasebatteryterminal (-).
Forthemachinewithoutthesystemoperatinglamp,turnthe startingswitchtoOFFposition,waitfortwominutesormore beforestartingthework.Disconnectthequickreleasebattery terminal(-).
Releasetheremainingpressurefromthecircuitbeforestartingtheworkofdisconnectingandremovingofoil,fuel,water, orairfromthecircuit.Whenremovingthecapofoilfilter, drainplug,oroilpressureplug,itshouldbedoneslowlyotherwisetheoilspills.