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PC270LC-7L | SN: A86001-UP | Komatsu | Heavy Equipment Manual PDF

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HYDRAULICEXCAVATOR

SERIALNUMBERS andUP

ThismaterialisproprietarytoKomatsuAmericaCorp.andisnottobereproduced,used,ordisclosedexceptinaccordance withwrittenauthorizationfromKomatsuAmericaCorp.

Itisourpolicytoimproveourproductswheneveritispossibleandpracticaltodoso.Wereservetherighttomakechangesor addimprovementsatanytimewithoutincurringanyobligationtoinstallsuchchangesonproductssoldpreviously.

Duetothiscontinuousprogramofresearchanddevelopment,periodicrevisionsmaybemadetothispublication.Itis recommendedthatcustomerscontacttheirdistributorforinformationonthelatestrevision.

November2009

FOREWORD

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SafetyNotice

IMPORTANTSAFETYNOTICE

Properserviceandrepairisextremelyimportantforthesafeoperationofyourmachine.Theserviceandrepairtechniques recommendedanddescribedinthismanualarebotheffectiveandsafemethodsofoperation.Someoftheseoperations requiretheuseoftoolsspeciallydesignedforthepurpose.

Topreventinjurytoworkers,thesymbolsandareusedtomarksafetyprecautionsinthismanual.Thecautions accompanyingthesesymbolsshouldalwaysbefollowedcarefully.Ifanydangeroussituationarisesormaypossiblyarise, firstconsidersafety,andtakethenecessaryactionstodealwiththesituation.

GeneralPrecautions

WARNING!Mistakesinoperationare extremelydangerous.Read theOPERATION& MAINTENANCEMANUAL carefullyBEFOREoperating themachine.

1.Beforeperforminganygreasingorrepairs,readallthe precautionsgivenonthedecalswhicharefixedtothe machine.

2.Whenperforminganyoperation,alwayswearsafety shoesandhelmet.Donotwearlooseworkclothes,or clotheswithbuttonsmissing.

•Alwayswearsafetyglasseswhenhittingpartswith ahammer.

•Alwayswearsafetyglasseswhengrindingparts withagrinder,etc.

3.Ifweldingrepairsareneeded,alwayshaveatrained, experiencedwelderperformthework.Whenperformingweldingwork,alwayswearweldinggloves,apron, glasses,capandotherclothessuitedforweldingwork.

WARNING!Nevermodify,weld,cut,ordrill onanypartofaROPS structure.Doingsomay weakenthestructurewhich couldleadtopossiblefailurein arolloversituation

4.Whenperforminganyoperationwithtwoormore workers,alwaysagreeonoperatingproceduresbefore starting.Alwaysinformyourfellowworkersbefore startinganystepoftheoperation.Beforestartingwork, hang"UNDERREPAIR"signsonthecontrolsinthe operator'scompartment.

5.Keepalltoolsingoodconditionandlearnthecorrect waytousethem.

6.Decideaplaceintherepairworkshoptokeeptoolsand removedparts.Alwayskeepthetoolsandpartsintheir correctplaces.Alwayskeeptheworkareacleanand

makesurethatthereisnodirtoroilonthefloor.Smoke onlyintheareasprovidedforsmoking.Neversmoke whileworking.

PreparationsForWork

1.Beforeaddingoilormakingrepairs,parkthemachine onhard,levelground,andblockthewheelsortracksto preventthemachinefrommoving.

2.Beforestartingwork,lowerblade,ripper,bucketorany otherworkequipmenttotheground.Ifthisisnot possible,insertthesafetypinoruseblockstoprevent theworkequipmentfromfalling.Inaddition,besureto lockallthecontrolleversandhangwarningsignson them.

3.Whendisassemblingorassembling,supportthe machinewithblocks,jacksorstandsbeforestarting work.

4.Removeallmudandoilfromthestepsorotherplaces usedtogetonandoffthemachine.Alwaysusethe handrails,laddersorstepswhengettingonoroffthe machine.Neverjumponoroffthemachine.Ifitis impossibletousethehandrails,laddersorsteps,usea standtoprovidesafefooting.

PrecautionsDuringWork

1.Whenremovingoilfillercap,drainplug,orhydraulic pressuremeasuringplugs,loosenthemslowlyto preventoilfromspurtingout.Beforedisconnectingor removingcomponentsoftheoil,cooling,oraircircuits, firstcompletelyremovepressurefromthecircuit.

2.Thecoolantandoilinthecircuitsishotwhentheengine isstopped,sobecarefulnottogetburned.Waitforthe oilandcoolanttocooldownbeforeperformingany workontheoilorcoolingcircuits.

3.Beforestartingwork,removetheleadsfromthebattery. ALWAYSremoveleadfromthenegative(-)terminal first.

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