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PC300HD-6LE, PC300LC-6LE | Komatsu | Heavy Equipment Manual PDF

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PC300LC-6 PC300HD-6

HYDRAULICEXCAVATOR

SERIALNUMBERSPC300LC-6-A83001andup

SERIALNUMBERSPC300HD-6-A83001andup

ThismaterialisproprietarytoKomatsuAmericaInternationalCompanyandisnottobereproduced,used,ordisclosed exceptinaccordancewithwrittenauthorizationfromKomatsuAmericaInternationalCompany.

Itisourpolicytoimproveourproductswheneveritispossibleandpracticaltodoso.Wereservetherighttomake changesoraddimprovementsatanytimewithoutincurringanyobligationtoinstallsuchchangesonproductssold previously.

Duetothiscontinuousprogramofresearchanddevelopment,periodicrevisionsmaybemadetothispublication.Itis recommendedthatcustomerscontacttheirdistributorforinformationonthelatestrevision.

TheaffectedpagesareindicatedbyusingtheMarkIndicationAction followingmarks.Itisrequestedthatnecessaryactions betakentothesepagesaccordingtothetablebelow.•NewpagetobeaddedAdd •PagetobereplacedReplace ()PagetobedeletedDiscard Pageswithoutmarkswerepreviousadditionsorrevised pages.

MARKPAGEREVMARKPAGEREVMARKPAGEREVMARKPAGEREV •0-1• 0-210-910-6210-115 •0-3•10-1010-6310-116 •0-4•10-1110-6410-117 •0-5•10-1210-6510-118 •0-6•10-1310-6610-119 •0-7•10-1410-6710-120 •0-8•10-1510-6810-121 00-110-1710-7010-123 00-210-1810-7110-124 00-310-1910-7210-125 00-410-2010-7310-126 00-510-2110-7410-127 00-610-2210-7510-128 00-710-2310-7610-129 00-810-2410-7710-130 00-910-2510-7810-131 00-1010-2610-7910-132 00-1110-2710-8010-133 00-1210-2810-8110-134 00-1310-2910-8210-135 00-1410-3010-8310-136 00-1510-3110-8410-137 00-1610-3210-8510-138 00-1710-3310-8610-139 00-1810-3410-8710-140 00-1910-3510-8810-141

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•20-218••20-414••20-561•

MARKPAGEREVMARKPAGEREVMARKPAGEREVMARKPAGEREV

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•30-65••30-130••30-195•

•30-1••30-66••30-131••30-196• •30-2••30-67••30-132••30-197• •30-3••30-68••30-133••30-198• •30-4••30-69••30-134••30-199• •30-5••30-60••30-135••30-200• •30-6••30-71••30-136••30-201• •30-7••30-72••30-137••30-202• •30-8••30-73••30-138••30-203• •30-9••30-74••30-139••30-204• •30-10••30-75••30-140••30-205• •30-11••30-76••30-141••30-206• •30-12••30-77••30-142••30-207• •30-13••30-78••30-143••30-208• •30-14••30-79••30-144••30-209• •30-15••30-80••30-145••30-210• •30-16••30-81••30-146••30-211• •30-17••30-82••30-147••30-212• •30-18••30-83••30-148••30-213• •30-19••30-84••30-149••30-214• •30-20••30-85••30-150••30-215• •30-21••30-86••30-151••30-216• •30-22••30-87••30-152••30-217• •30-23••30-88••30-153••30-218• •30-24••30-89••30-154••30-219• •30-25••30-90••30-155••30-220• •30-26••30-91••30-156••30-221• •30-27••30-92••30-157••30-222• •30-28••30-93••30-158••30-223• •30-29••30-94••30-159••30-224• •30-30••30-95••30-160••30-225• •30-31••30-96••30-161• •30-32••30-97••30-162•40-1 •30-33••30-98••30-163•40-2 •30-34••30-99••30-164•40-3 •30-35••30-100••30-165•40-4 •30-36••30-101••30-166•40-5 •30-37••30-102••30-167•40-6 •30-38••30-103••30-168•40-7 •30-39••30-104••30-169•40-8

VARIOUSPRODUCTPARTS&SERVICEPUBLICATIONSAREAVAILABLETOALLKOMATSUCONSTRUCTION EQUIPMENTOWNERS,INCLUDINGOPERATIONANDMAINTENANCEMANUALS,PARTSBOOKSANDSHOP MANUALS.

SPECIALPUBLICATIONSSUCHASSERVICETOOL,AIRCONDITIONING,ANDTURBOCHARGERSERVICE MANUALSAREALSOAVAILABLEASWELLASSELECTEDOPERATION&SERVICEMANUALSINFOREIGN LANGUAGES.

THEPUBLICATIONSLISTEDBELOWAREAVAILABLEFORTHISPARTICULARMACHINE(S).

PARTSANDSERVICEPUBLICATIONSCANONLYBEACQUIREDBYAUTHORIZEDKOMATSUDISTRIBUTORS, USINGTHEKOMATSUAMERICAINTERNATIONALCOMPANYPARTSINVENTORYPROCESSINGSYSTEM (PIPS).

IFTHEPIPSSYSTEMISNOTAVAILABLEATTHEDISTRIBUTORLOCATION,THENTHEFOLLOWING REQUISITIONFORTECHNICALSERVICEPUBLICATIONSANDSERVICEFORMSCANBEUSED.FORMKDC91D ISSHOWNONTHEREVERSESIDEOFTHISPAGE.

COMPLETEFORM ANDRETURNTO

KomatsuAmericaInternationalCompany

440NorthFairwayDrive

VernonHills,IL60061-8112U.S.A.

Attn:TechnicalPublications

FaxNo.(847)970-4186

TelNo.(847)970-5887

COMPANYNAME

SHIPTO TYPEorPRINT ONLY

ATTN.

STREET

IMPORTANT-TOASSURESHIPMENTOFTHECORRECTPUBLICATION(S),THEMODELNUMBERANDMACHINE SERIALNUMBERMUSTBESHOWN.

SAFETY

SAFETYNOTICE

IMPORTANTSAFETYNOTICE

Properserviceandrepairisextremelyimportantforthesafeoperationofyourmachine.Theserviceandrepair techniquesrecommendedanddescribedinthismanualarebotheffectiveandsafemethodsofoperation. Someoftheseoperationsrequiretheuseoftoolsspeciallydesignedforthepurpose.

Topreventinjurytoworkers,thesymbolsandareusedtomarksafetyprecautionsinthismanual.The cautionsaccompanyingthesesymbolsshouldalwaysbefollowedcarefully.Ifanydangeroussituationarises ormaypossiblyarise,firstconsidersafety,andtakethenecessaryactionstodealwiththesituation.

GENERALPRECAUTIONSPREPARATIONSFORWORK

Mistakesinoperationareextremelydangerous.Readthe7.Beforeaddingoilormakingrepairs,parkthemaOPERATION&MAINTENANCEMANUALcarefullychineonhard,levelground,andblockthewheelsor BEFOREoperatingthemachine.trackstopreventthemachinefrommoving.

1.Beforecarryingoutanygreasingorrepairs,readall8.Beforestartingwork,lowerblade,ripper,bucketor theprecautionsgivenonthedecalswhicharefixedtoanyotherworkequipmenttotheground.Ifthisisnot themachine.possible,insertthesafetypinoruseblockstoprevent

theworkequipmentfromfalling.Inaddition,besure

2.Whencarryingoutanyoperation,alwayswearsafetytolockallthecontrolleversandhangwarningsigns shoesandhelmet.Donotwearlooseworkclothes,onthem. orclotheswithbuttonsmissing.

•Alwayswearsafetyglasseswhenhittingpartsmachinewithblocks,jacksorstandsbeforestarting withahammer.work.

•Alwayswearsafetyglasseswhengrindingparts10.Removeallmudandoilfromthestepsorother withagrinder,etc.placesusedtogetonandoffthemachine.Always

9.Whendisassemblingorassembling,supportthe usethehandrails,laddersorstepswhengettingonor

3.Ifweldingrepairsareneeded,alwayshaveatrained,offthemachine.Neverjumponoroffthemachine. experiencedweldercarryoutthework.Whencarry-Ifitisimpossibletousethehandrails,laddersor ingoutweldingwork,alwayswearweldinggloves,steps,useastandtoprovidesafefooting. apron,glasses,capandotherclothessuitedfor weldingwork.

PRECAUTIONSDURINGWORK

4.Whencarryingoutanyoperationwithtwoormore11.Whenremovingtheoilfillercap,drainplugorhyworkers,alwaysagreeontheoperatingproceduredraulicpressuremeasuringplugs,loosenthem beforestarting.Alwaysinformyourfellowworkersslowlytopreventtheoilfromspurtingout.Before beforestartinganystepoftheoperation.Beforedisconnectingorremovingcomponentsoftheoil, startingwork,hangUNDERREPAIRsignsonthewateroraircircuits,firstremovethepressurecomcontrolsintheoperator'scompartment.pletelyfromthecircuit.

5.Keepalltoolsingoodconditionandlearnthecorrect12.Thewaterandoilinthecircuitsarehotwhenthe waytousethem.engineisstopped,sobecarefulnottogetburned.

Waitfortheoilandwatertocoolbeforecarryingout

6.Decideaplaceintherepairworkshoptokeeptoolsanyworkontheoilorwatercircuits. andremovedparts.Alwayskeepthetoolsandparts intheircorrectplaces.Alwayskeeptheworkarea13.Beforestartingwork,removetheleadsfromthe cleanandmakesurethatthereisnodirtoroilonthebattery.ALWAYSremovetheleadfromthenegative floor.Smokeonlyintheareasprovidedforsmoking.(-)terminalfirst. Neversmokewhileworking.

14.Whenraisingheavycomponents,useahoistor•Wheninstallinghosesandwires,besurethatthey crane.Checkthatthewirerope,chainsandhookswillnotbedamagedbycontactwithotherpartswhen arefreefromdamage.Alwaysuseliftingequipmentthemachineisbeingoperated. whichhasamplecapacity.Installtheliftingequipment atthecorrectplaces.Useahoistorcraneand20.Wheninstallinghighpressurehoses,makesurethat operateslowlytopreventthecomponentfromhittingtheyarenottwisted.Damagedtubesaredangerous, anyotherpart.Donotworkwithanypartstillraisedsobeextremelycarefulwheninstallingtubesforhigh bythehoistorcrane.pressurecircuits.Alsocheckthatconnectingparts

15.Whenremovingcoverswhichareunderpressureor underpressurefromaspring,alwaysleavetwobolts21.Whenassemblingorinstallingparts,alwaysusethe inpositiononoppositesides.Slowlyreleasethespecifiedtighteningtorques.Wheninstallingprotecpressure,thenslowlyloosentheboltstoremove.tivepartssuchasguards,orpartswhichvibrate

16.Whenremovingcomponents,becarefulnottobreakcarefultocheckthattheyareinstalledcorrectly. ordamagethewiring,Damagedwiringmaycause electricalfires.22.Whenaligningtwoholes,neverinsertyourfingersor

17.Whenremovingpiping,stopthefueloroilfromhole. spillingout.Ifanyfueloroildripsontothefloor,wipe itupimmediately.Fueloroilonthefloorcancause23.Whenmeasuringhydraulicpressure,checkthatthe youtoslip,orcanevenstartfires.measuringtooliscorrectlyassembledbeforetaking

18.Asageneralrule,donotusegasolinetowashparts. Inparticular,useonlytheminimumofgasolinewhen24.Takecarewhenremovingorinstallingthetracksof washingelectricalparts.track-typemachines.Whenremovingthetrack,the

19.Besuretoassembleallpartsagainintheiroriginalateitherendofthetrack. places.Replaceanydamagedpartwithnewparts. arecorrectlyinstalled. violentlyorrotateathighspeed,beparticularly hand.Becarefulnottogetyourfingerscaughtina anymeasurements. trackseparatessuddenly,soneverletanyonestand

GENERAL

Thisshopmanualhasbeenpreparedasanaidtoimprovethequalityofrepairsbygivingtheservicemananaccurate understandingoftheproductandbyshowinghimthecorrectwaytoperformrepairsandmakejudgements.Makesure youunderstandthecontentsofthismanualanduseittofulleffectateveryopportunity.

Thisshopmanualmainlycontainsthenecessarytechnicalinformationforoperationsperformedinaserviceworkshop. Foreaseofunderstanding,themanualisdividedintothefollowingsections.Thesesectionsarefurtherdividedintoeach maingroupofcomponents.

GENERAL

Thissectionliststhegeneralmachinedimensions,performancespecifications,componentweights,andfuel, coolantandlubricantspecificationcharts.

STRUCTUREANDFUNCTION

Thissectionexplainsthestructureandfunctionofeachcomponent.Itservesnotonlytogiveanunderstanding ofthestructure,butalsoservesasreferencematerialfortroubleshooting.

TESTING,ADJUSTINGANDTROUBLESHOOTING

Thissectionexplainscheckstobemadebeforeandafterperformingrepairs,aswellasadjustmentstobe madeatcompletionofthechecksandrepairs.Troubleshootingchartscorrelating"Problems"to"Causes"are alsoincludedinthissection.

DISASSEMBLYANDASSEMBLY

Thissectionexplainstheordertobefollowedwhenremoving,installing,disassemblingorassemblingeach component,aswellasprecautionstobetakenfortheseoperations.

MAINTENANCESTANDARD

Thissectiongivesthejudgementstandardswheninspectingdisassembledparts.

NOTICE

Thespecificationscontainedinthisshopmanualaresubjecttochangeatanytimeandwithoutanyadvance notice.Contactyourdistributorforthelatestinformation.

HOWTOREADTHESHOPMANUAL

VOLUMES

Shopmanualsareissuedasaguidetocarryingout repairs.Theyaredividedasfollows:

Chassisvolume:Issuedforeverymachinemodel

Enginevolume:Issuedforeachengineseries

Electricalvolume:Eachissuedasonetocoverall models

Attachmentvolume:Eachissuedasonetocoverall models

Thesevariousvolumesaredesignedtoavoidduplication ofinformation.Thereforetodealwithallrepairsforany model,itisnecessarythatchassis,engine,electricaland attachmentbeavailable.

DISTRIBUTIONANDUPDATING

Anyadditions,amendmentsorotherchangeswillbesent toyourdistributor.Getthemostup-to-dateinformation beforeyoustartanywork.

FILINGMETHOD

1.Seethepagenumberonthebottomofthepage.File thepagesincorrectorder.

2.Followingexamplesshowhowtoreadthepage number:

Example1(Chassisvolume):

10-3

REVISEDEDITIONMARK

Whenamanualisrevised,aneditionmark(....)is recordedonthebottomoutsidecornerofthepages.

REVISIONS

RevisedpagesareshownattheLISTOFREVISED PAGESbetweenthetitlepageandSAFETYpage.

SYMBOLS

Sothattheshopmanualcanbeofamplepracticaluse, importantplacesforsafetyandqualityaremarkedwith thefollowingsymbols.

SymbolItemRemarks

SafetySpecialsafetyprecautionsarenecessarywhenperformingthework.

Caution

Weight

Tightening torque

Coat

Oil,water

Specialtechnicalprecautionsorother precautionsforpreservingstandards arenecessarywhenperformingthe work.

Weightofpartsorsystems.Caution necessarywhenselectinghoisting wireorwhenworkingpostureis important,etc.

Placesthatrequirespecialattention fortighteningtorqueduringassembly.

Placestobecoatedwithadhesives andlubricantsetc.

Placeswhereoil,waterorfuelmust

beadded,andthe Itemcapacity. number(10.Structure andFunction)

Consecutivepagenumber foreachitem

Example2(Enginevolume):

Refertothepertinentenginemanual.

3.Additionalpages:Additionalpagesareindicatedbya hyphen(-)andnumberedafterthepagenumber.File asintheexample.

Example: 10-4

10-4-1Addedpages10-4-2 10-5

Drain

Placeswhereoilorwatermustbe drained,andquantitytobedrained.

HOISTINGINSTRUCTIONS

HOISTING

Heavyparts(25kgormore)mustbeliftedwith ahoistetc.IntheDISASSEMBLYANDASSEMBLYsection,everypartweighing25kgormore isindicatedclearlywiththesymbol

•Ifapartcannotbesmoothlyremovedfromthe machinebyhoisting,thefollowingchecksshouldbe made:

1)Checkforremovalofallboltsfasteningthepart totherelativeparts.

2)Checkforexistenceofanotherpartcausing interfacewiththeparttoberemoved.

WIREROPES

1)Useadequateropesdependingontheweightofparts tobehoisted,referringtothetablebelow:

Wireropes

(Standard"Z"or"S"twistropeswithoutgalvanizing

Ropediameter(mm)Allowableload(tons)

3)Donotslingaheavyloadwithoneropealone,but slingwithtwoormoreropessymmetricallywoundon totheload.

Slingingwithoneropemaycauseturningof theloadduringhoisting,untwistingoftherope, orslippingoftheropefromitsoriginalwindingpositionontheload,whichcanresultinadangerous accident.

4)Donotslingaheavyloadwithropesformingawide hanginganglefromthehook.Whenhoistingaload withtwoormoreropes,theforcesubjectedtoeach ropewillincreasewiththehangingangles.Thetable belowshowsthevariationofallowableload(kg) whenhoistingismadewithtworopes,eachofwhich isallowedtoslingupto1000kgvertically,atvarious hangingangles.Whentworopesslingaloadvertically,upto2000kgoftotalweightcanbe suspended.Thisweightbecomes1000kgwhentwo ropesmakea120hangingangle.Ontheother hand,tworopesaresubjecttoanexcessiveforceas largeas4000kgiftheyslinga2000kgloadata liftingangleof150

Theallowableloadvalueisestimatedtobe1/6or 1/7ofthebreakingstrengthoftheropeused.

2)Slingwireropesfromthemiddleportionofthehook. Slingingneartheedgeofthehookmaycausethe ropetoslipoffthehookduringhoisting,andaserious accidentcanresult.Hookshavemaximumstrength atthemiddleportion.

COATINGMATERIALS

Therecommendedcoatingmaterialsprescribedintheshopmanualsarelistedbelow.

CategoryCodePartNo.QtyContainerMainapplications,features

LT-1A790-129-9030150gTube

•Usedtopreventrubbergaskets,rubbercushionsandcorkplugs fromcomingout

LT-1B790-129-905020g(x2)Usedforplastics(exceptpolyethylene, Polyethylenepolypropylene, container

•Usedinplacesrequiringanimmediatelyeffective,strongadhesive. tetrafluoroethylene,andvinylchloride),rubber,metalandnon-metal.

LT-209940-0003050gPolyethylene•Features:Resistancetoheat,chemicals container•Usedforanti-looseningandsealantpurposesforboltsandplugs.

LT-3HardagtCan•Usedasadhesiveorsealantformetal,glassorplastic.

790-129-9060 Setofadhesive andhardening agent Adh1kg 500kg

AdhesivePolyethylene

LT-4790-129-9040250g•Usedassealantformachined containerholes.

Holtz MH705

790-126-912075gTube•Usedasheatresistingsealantforrepairingengine.

•Quickhardeningtypeadhesive.

ThreePolyethylene bond1735container 790-129-914050g•Curetime:5sec.to3min.

•Usedmainlyforadhesionofmetals,rubbers,plasticsandwoods.

•Quickhardeningtypeadhesive.

Aron-alphaPolyethylene 201container 790-129-91302g•Quickcuretime,max.strengthafter30minutes.

•Usedmainlyforadhesionofmetals,rubbersandplastics.

LoctitePolyethylene•Features:Resistancetoheat,chemicals 648-50container•Usedatjointportionssubjecttohigh 79A-129-911050temperature. cc

LG-1790-129-9010200gTube

Gasket

Molybdenum disulfide lubricant

•Usedasadhesiveorsealantforgasketsandpackingofpowertrain case,etc.

•Features:Resistancetoheat

•Usedassealantforflangesurfacesandboltsathightemperature

LG-3790-129-90701kgCanlocations;usedtopreventseizure.

•Usedassealantforheatresistantgasketforathightemperature locationssuchasenginepre-combustionchamber,exhaustpipe.

•Features:Resistancetowater,oil

•Usedassealantforflangesurface,thread.

LG-4790-129-9020200gTube•Alsopossibletouseassealantforflangeswithlargeclearance.

•Usedassealantformatingsurfacesoffinaldrivecase,transmission case.

LG-5790-129-90801kg•Usedassealantfortaperedplugs,elbows,nipplesof Polyethylenehydraulic container

•Usedassealantforvariousthreads,pipejoints,flanges. piping.

•Features:Siliconbased,resistanttoheat,cold.

LG-609940-00011250gTube•Usedassealantforflangesurface,thread.

•Usedassealantforoilpan,finaldrivecase,etc.

LG-709920-00150150gTube•Usedassealantforflywheelhousing,intakemanifold,oilpan,

•Features:Siliconbased,quickhardeningtype. thermostathousing,etc.

Three bond1211790-129-9090100gTube•Usedasheatresistingsealantforrepairingengine.

LM-G09940-0005160gCan•Usedaslubricantforslidingparts(topreventsqueaking).

•Usedtopreventseizureorscuffingofthethreadwhenpressfitting

LM-P09940-00040200gTubeorshrinkfitting.

•Usedaslubricantforlinkage,bearings,etc.

SYG-350Ll

SYG-400Ll

LithiumgreaseG2-L1SYG-400Ll-AVariousVarious•Generalpurposetype

SYG-160Ll

SYGA-160CNLl

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