SK714-5 | SN: 37AF01876-UP and more| Komatsu | Heavy Equipment Manual PDF

Theaffectedpagesareindicatedbytheuseofthe followingmarks.Itisrequestedthatnecessaryactionsbetakentothesepagesaccordingtotablebelow.

Pageshavingnomarksarethosepreviouslyrevisedor madeadditions. MarkIndicationActionrequired PagetobenewlyAdd PagetobereplacedReplace ()PagetobedeleteDiscard

LISTOFREVISEDPAGES

00-18

10-108 20-1 20-2 20-3 20-4 20-5 20-6 20-7 20-8 20-9 20-10 20-11 20-12 20-13 20-14 20-15 20-16 20-17 20-18 20-19 20-20 20-21 20-22 20-23 20-24 20-25 20-26 20-27 20-28 20-29 20-30 20-31 20-32 20-34 20-35 20-36 20-37 20-38 20-39 20-40 20-41 20-42 30-1 30-2 30-3 30-4 30-5 30-6 30-7 30-8 30-9 30-10 30-11 30-12 30-13 30-14 30-15 30-16 30-17 30-18 30-19 30-20 30-21 30-22 30-23 30-24 30-25 30-26 30-27 30-28 30-29

IMPORTANTSAFETYNOTICE

Properserviceandrepairisextremelyimportantforthesafeoperationofyourmachine. TheserviceandrepairtechniquesrecommendedbyKomatsuUtilityanddescribeinthismanualarebotheffectiveandsafemethodsofoperation.Someoftheseoperationsrequiretheuseoftoolsspeciallydesigned byKomatsuUtilityforthepurpose.

Topreventinjurytoworkers,thesymbolsandareusedtomarksafetyprecautionsinthismanual. Thecautionsaccompanyingthesesymbolsshouldalwaysbecarefullyfollowed.Ifanydangerarisesormay possiblyarise,firstconsidersafety,andtakenecessarystepstoface.

SAFETY

GENERALPRECAUTIONS

Mistakesinoperationextremelydangerous. ReadalltheOperationandMaintenanceManualcarefullyBEFOREoperatingthemachine.

1.Beforecarryingoutanygreasingorrepairs,readall theprecautionswrittenonthedecalswhicharesuck onthemachine.

2.Whencarryingoutanyoperation,alwayswearsafetyshoesandhelmet.Donotwearloosework clothes,orclotheswithbuttonsmissing.

•Alwayswearsafetyglasseswhenhittingparts withahammer.

•Alwayswearsafetyglasseswhengrinding partswithagrinder,etc.

3.Ifweldingrepairsareneeded,alwayshavea trained,experiencedweldercarryoutthework. Whencarryingoutweldingwork,alwayswearweldinggloves,apron,glasses,capandotherclothes suitedforweldingwork.

4.Whencarryingoutanyoperationwithtwoormore workers,alwaysagreeontheoperatingprocedure beforestarting.Alwaysinformyourfellowworkers beforestartinganystepoftheoperation.Before startingwork,hangUNDERREPAIRsignsonthe controlsintheoperator’scompartment.

5.Keepalltoolsingoodconditionandlearnthecorrect waytousethem.

6.Decideaplaceintherepairworkshoptokeeptools andremovedparts.Alwayskeepthetoolsandparts intheircorrectplaces.Alwayskeeptheworkarea cleanandmakesurethatthereisnodirtoroilonthe floor.

Smokeonlyintheareasprovidedforsmoking.Neversmokewhileworking.

PREPARATIONSFORWORK

7.Beforeaddingormakinganyrepairs,parkthemachineonhard,levelground,andblockthewheelsto preventthemachinefrommoving.

8.Beforestartingwork,loweroutrigger,bucketorany otherworkequipmenttotheground.Ifthisisnot possible,useblockstopreventtheworkequipment fromfallingdown.Inaddition,besuretolockallthe controlleversandhangwarningsignonthem.

9.Whendisassemblingorassembling,supportthe machinewithblocks,jacksorstandsbeforestarting work.

10.Removeallmudandoilfromthestepsorotherplacesusedtogetonandoffthemachine.Alwaysuse thehandrails,laddersorstepswhengettingonoroff themachine. Neverjumponoroffthemachine. Ifitisimpossibletousethehandrails,laddersor steps,useastandtoprovidesafefooting.

PRECAUTIONSDURINGWORK

11.Whenremovingtheoilfillercap,drainplugorhydraulicpressuremeasuringplugs,loosenthem slowlytopreventtheoilfromspurtingout. Beforedisconnectingorremovingcomponentsof thehydrauliccircuitandenginecoolingcircuit,first removethepressurecompletelyfromthecircuit.

12.Thewaterandoilinthecircuitsarenothotwhenthe engineinstopped,sobecarefulnottogetburned. Waitfortheoilwatertocoolbeforecarryingoutany workonthecoolingwatercircuits.

13.Beforestartingwork,removetheleadsfromthebattery.Alwaysremovetheleadfromthenegative(–) terminalfirst.

14.Whenraisingheavycomponents,useahoistor crane.Checkthatthewirerope,chainsandhooks arefreefromdamage. Alwaysuseliftingequipmentwhichhasamplecapacity.Installtheliftingequipmentatthecorrect places.

Useahoistorcraneandoperateslowlytoprevent thecomponentfromhittinganyotherpart. Donotworkwithanypartstillraisedbythehoistor crane.

15.Whenremovingcoverswhichareunderinternal pressureorunderpressurefromaspring,always leavetwoboltsinpositiononoppositesides.Slowly releasethepressure,thenslowlyloosentheboltsto remove.

16.Whenremovingcomponents,becarefulnotto breakordamagethewiring. Damagewiringmaycauseelectricalfires.

17.Whenremovingpiping,stopthefueloroilfromspillingout.Ifanyfueloroildripsontothefloor,wipeitup immediately.

Fueloroilonthefloorcancauseyoutoslip,orcan evenstartfires.

18.Asageneralrule,donotusegasolinetowashparts. Inparticular,useonlytheminimumofgasoline whenwashingelectricalparts.

19.Besuretoassembleallpartsagainintheiroriginal places.Replaceanydamagepartswithnewparts. Wheninstallinghosesandwires,besurethatthey willnotbedamagedbycontactwithotherparts whenthemachineisbeingoperated.

20.Wheninstallinghighpressurehoses,makesure thattheyarenottwisted.Damagedtubesaredangerous,sobeextremelycarefulwheninstalling tubesforhighpressurecircuits.Also,checkthat connectingpartsarecorrectlytightened.

21.Whenassemblingorinstallingparts,alwaysuse specifiedtighteningtorques. Wheninstallingthepartswhichvibrateviolentlyor rotateathighspeed,beparticularycarefultocheck thattheyarecorrectlyinstalled.

22.Whenaligningtwoholes,neverinsertyourfingers orhand.

23.Whenmeasuringhydraulicpressure,checkthatthe measuringtooliscorrectlyassembledbeforetaking anymeasurement.

24.Takesurewhenremovingorinstallingwheels.

FOREWORD

Thisshopmanualhasbeenpreparedasanaidtoimprovethequalityofrepairsbygivingtheoperatoranaccurate understandingoftheproductandbyshowinghimthecorrectwaytoperformrepairsandmakejudgements.Makesure youunderstandthecontentsofthismanualanduseittofulleffectateveryopportunity.

Thisshopmanualmainlycontainsthenecessarytechnicalinformationforoperationsperformedinaserviceworkshop.

Themanualisdividedintochaptersoneachmaingroupofcomponents;thesechaptersarefurtherdividedintothe followingsections.

STRUCTUREANDFUNCTION

Thissectionexplainsthestructureandfunctionofeachcomponent.Itservesnotonlytogiveanunderstanding ofthestructure,butalsoservesasreferencematerialfortroubleshooting.

TESTINGANDADJUSTING

Thissectionsexplainscheckstobemadebeforeandafterperformingrepairs,aswellasadjustmentstobe madeatcompletionofthechecksandrepairs.

Troubleshootingchartscorrelating«Problems»to«Causes»arealsoincludedinthissection.

DISASSEMBLYANDASSEMBLY

Thissectionexplainstheordertobefollowedwhenremoving,installing,disassemblingorassemblingeach component,aswellasprecautionstobetakenfortheseoperations.

MAINTENANCESTANDARD

Thissectiongivesthejudgementstandardswheninspectingdisassembledparts.

NOTE

Thespecificationscontainedinthisshopmanualaresubjecttochangeatanytimeandwithoutanynotice.

ContactyourKomatsuUtilitydistributorforthelatestinformation.

HOWTOREADTHESHOPMANUAL

VOLUMES

Shopmanualareissuedasaguidetocarryoutrepairs. Thesevariousvolumesaredesignedtoavoidduplicatingthesameinformation.

DISTRIBUTIONANDUPDATING

Anyadditions,amendmentsorotherchangeswillbe senttoKomatsuUtilitydistributors. Getthemostup-to-dateinformationbeforeyoustartany work.

FILINGMETHOD

1.Seethepagenumberonthebottomofthepage. Filethepagesincorrectorder.

2.Followingexamplesshowyouhowtoreadthepage number.

Example:

3.Additionalpages:additionalpagesareindicatedby ahyphen(–)andnumberafterthepagenumber. Fleasintheexample. Example:

REVISEDEDITIONMARK (....)

Whenamanualisrevised,aneditionmarkisrecorded onthebottomoutsidecornerofthepages.

REVISIONS

RevisedpagesareshownontheLISTOFREVISED PAGESbetweenthetitlepageandSAFETYpage.

SYMBOLS

Inordertomaketheshopmanualgreatlychelpful,importantpointsaboutsafetyandqualityaremarkedwith thefollowingsymbols.

SymbolItemRemarks

Safety

Caution

Weight

Tightening torque

Specialsafetyprecautions arenecessarywhen performingthework.

Extraspecialsafetyprecautions arenecessarywhenperforming theworkbecauseitisunderinternalpressure.

Specialtechnicalprecautionsor otherprecautionsforpreserving standardsarenecessarywhen performingthework.

Weightofpartsorsystems. Cautionnecessarywhenselectinghoistingwire,orwhenworkingpostureisimportant,etc.

Partsthatrequirespecialattentionforthetighteningtorqueduringassembly.

CoatPartstobecoatedwithadhesivesandlubricantsetc.

Oil,water

Placeswhereoil,waterorfuel mustbeadded,andtheirquantity.

Drain

Placeswhereoilorwatermust bedrained,andquantitytobe drained.

HOISTINGINSTRUCTIONS

Heavyparts(25kgormore)mustbelifted withahoistetc.IntheDisassemblyandAssemblysection,everypartweighing25kgormoreis clearlyindicatedwiththesymbol

1.Ifapartcannotbesmoothlyremovedfromthemachinebyhoisting,thefollowingchecksshouldbe made:

•Checkforremovalofallboltsfasteningthepart totherelativeparts.

•Checkforanypartcausinginterferencewith theparttoberemoved.

2.Wireropes

1)Useadequateropesdependingontheweightof partstobehoisted,referringtothetablebelow:

WIREROPES

(Standard«S»or«Z»twistropes withoutgalvanizing)

Theallowableloadvalueisestimatedtobeonesixthorone-seventhofthebreakingstrengthofthe ropeused.

2)Slingwireropesfromthemiddleportionofthehook. Slingingneartheedgeofthehookmaycausethe ropetoslipoffthehookduringhoistg,andaseriousaccidentcanresult.

SK714-5SK815-5SK815-5turbo

Hookshavemaximumstrengthatthemiddleportion.

3)Donotslingaheavyloadwithoneropealone,but slingwithtwoormoreropessymmetricallywound ontotheload.

Slingingwithoneropemaycauseturningoftheload duringhoisting,untwistingoftherope,orslippingof theropefromitsoriginalwindingpositiononthe load,whichcancausedangerousaccidents.

4)Donotslingaheavyloadwithropesformingawide hanginganglefromthehook.

Whenhoistingaloadwithtwoormoreropes,the forcesubjectedtoeachropewillincreasewiththe hangingangles.

Thetablebelowshowsthevariationofallowable load(kg)whenhoistingismadewithtworopes, eachofwhichisallowedtoslingupto1000kgvertically,atvarioushandingangles.

Whentworopesslingaloadvertically,upto2000kg oftotalweightcanbesuspended.

Thisweightbecomes1000kgwhentworopes makea120°hangingangle.

Ontheotherhand,tworopesaresubjectedtoanexcessiveforceaslargeas4000kgiftheyslinga2000 kgloadataliftingangleof150°.

STANDARDTIGHTENINGTORQUE

STANDARDTIGHTENINGTORQUE

Thefollowingchartsgivethestandardtighteningtorquesofboltsandnuts. Exceptionsaregiveninsectionof«DisassemblyandAssembly».

1.STANDARDTIGHTENINGTORQUEOFBOLTSANDNUT

Thistorquetabledoesnotapplytoboltsornutswhichhavetofastennylonorotherpartsnon-ferrousmetalwasher. Nm(newtonmeter):1Nm=0.102kgm

2.TIGHTENINGTORQUEFORNUTSOFFLARED

Usethesetorquesfornutpartofflared.

Threaddiameter ofnutpart (mm)

1/2”-20

9/16”-18

3/4”-16

7/8”-14

1.1/16-12

1.5/16-12

Widthacrossflats ofnutpart (mm)

Threaddiameter ofnutpart (mm)

9/16”-18

11/16”-16

13/16”-16

1”-14

1.3/16-12

1.7/16-12

1.11/16-12

2”-12

Widthacrossflats ofnutpart

2.3–2.5 3.4–3.9 5.2–5.8 8.2–9.2 12.2–13.3 15.3–17.3 18.4–20.4

COATINGMATERIALS

TherecommendedcoatingmaterialsprescribedinKomatsuUtilityShopManualsarelistedbelow:

NomenclatureCodeApplications

Bostik99Usedtoapplyrubberpads,rubbergasketsandcorkplugs.

Loctite406Usedtoapplyresin,rubber,metallicandnon-metallicpartswhenafast,strong sealisneeded.

Loctite222Usedforlowresistancelockingofscrews,checknutsandadjustmentnuts.

Loctite242

Adhesives

Gasketsealant

Antifrictioncompound (Lubricantincluding Molybdenumdisulfide)

Grease (Lithiumgrease)

Vaseline

Topreventthelooseningofbolts,nutsandplugsandtheleakageofoil.Usedfor mediumresistancelockingofscrewsandnutsofeverytype,andforlocking keysandbearings.

Loctite262Usedforhighresistantofthreadedpartsthatcanberemovedwithnormaltools.

Loctite270Usedforhighresistantlockingandforsealingthreadedparts,boltsandstud bolts.

Loctite542Usedforsealingtheunionthreadsforhydraulictubes.

Loctite573Usedforsealingratherexactplanesurfaceswhentheoptionofpossiblefuture dismantlingisrequired.

Loctite601Usedforhighresistantlockingofmechanicalcomponentsthatcanberemoved onlyafterheating

Loctite675Usedtolockcylindricalcouplingsandforthepermanentlockingofthreaded parts,andalsotolockshaftstobearings,gears,pulleys,pins,bushings,etc.

Loctite542Usedbyitselftosealgreasefittings,taperedscrewfittingsandtaperedscrew fittingsinhydrauliccircuitsoflessthan50mmindiameter.

Loctite510Usedbyitselfonmountingflatsurface(Clearancebetweensurfaceswithin0.2mm)

Loctite518Usedbyitselfonmountingflatsurface(Clearancebetweensurfaceswithin0.5mm

LitioEPMS2 NLGI2

LitioEP NLGI2

Appliedtobearingsandtapershafttofacilitatepress-fittingandtoprevent sticking,burningorrusting.

Appliedtobearings,slidingpartsandoilsealsforlubrication,rustprevention andfacilitationofassemblingwork.

Usedforprotectingbatteryelectrodeterminalsfromcorrosion

Inthewiringdiagramsvariouscolourandsymbolsareemployedtoindicatethethicknessofwires. ThiswirecodetablewillhelpyouunderstandWIRINGDIAGRAMS.

Example:R–N1.5indicatesacablehavinganominalnumber1.5andredcoatingwithblackstripe.

CLASSIFICATIONBYTHICKNESS

Nominal number

Copperwire CableO.D. (mm) Currentrating (A) Number strands Øofstrands (mm) Crosssection (mm)

0.5160.200.351.553.5 1140.300.992.8011 1.5210.301.483.3514 2.5350.302.473.8020 4560.303.954.6028 6840.305.935.2037

CLASSIFICATIONBYCOLOURANDCODE

PrimaryAuxiliary

CodeAA–BA/BA–G–A–NA/NA–RA–VA/V

ColourLightBlueLightBlue–WhiteLightBlue–YellowLightBlue–BlackLightBlue–RedLightBlue–Green CodeBB–G–B–NB/NB–RB/R

ColourWhiteWhite–YellowWhite–BlackWhite–Red–– CodeCC–BC/BC–L–C–NC/N

ColourOrangeOrange–WhiteOrange–BlueOrange–Black–– CodeGG–NG/NG/R

ColourYellowYellow–BlackYellow–Red––– CodeHH–L–H–N–H–RH/R

ColourGreyGrey–BlueGrey–BlackGrey–Red–– CodeL L/BL–GL/GL–NL/NL–RL/R

ColourBlueBlue–WhiteBlue–YellowBlue–BlackBlue–Red– CodeMM–BM/BM–N–M–V–––––

ColourBrownBrown–WhiteBrown–BlackBrown–Green–– CodeN

ColourBlack

CodeRR–G–R–NR/NR–V–––––

ColourRedRed–YellowRed–BlackRed–Green–– CodeSS–G–S–NS/N

ColourPinkPink–YellowPink–Black––– CodeVV–BV/BV–NV/N

ColourGreenGreen–WhiteGreen–Black––– CodeZZ–B–Z–NZ/N

ColourVioletViolet–WhiteViolet–Black–––

COMPOSITIONOFTHECOLOURS

Thecolorationoftwo-colourwiresisindicatedbythecompositionofthesymbollisted.

Example:G–V=Yellow-Greenwithlongitudinalcolouring G/V=Yellow-Greenwithtransversalcolouring

SK714-5SK815-5SK815-5turbo