Service Manual - Kobelco SK850LC SUPER ACERA TIER 3 Hydraulic Excavator

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GENERALSAFETYINFORMATION

Donotoperateorperformanymaintenanceonthis machineuntilallinstructionsfoundintheOPERATOR’SMANUALandthisMANUALhavebeenthoroughlyreadandunderstood.

Improperoperationormaintenanceofthismachine maycauseaccidentsandcouldresultinseriousinjuryordeath.

Alwayskeepthemanualinstorage.

Ifitismissingordamaged,placeanorderwithan authorizedourDistributorforareplacement.

Ifyouhaveanyquestions,pleaseconsultanauthorizedourDistributor.

(1)Mostaccidents,whichoccurduringoperation,are duetoneglectofprecautionarymeasuresandsafetyrules.Sufficientcareshouldbetakentoavoid theseaccidents.Erroneousoperation,lubrication ormaintenanceservicesareverydangerousand maycauseinjuryordeathofpersonnel.Therefore allprecautionarymeasures,NOTES,DANGERS, WARNINGSandCAUTIONScontainedinthemanualandonthemachineshouldbereadandunderstoodbyallpersonnelbeforestartinganyworkwith oronthemachine.

(2)Operation,inspection,andmaintenanceshouldbe carefullycarriedout,andsafetymustbegiventhe firstpriority.Messagesofsafetyareindicatedwith marks.Thesafetyinformationcontainedinthe manualisintendedonlytosupplementsafety codes,insurancerequirements,locallaws,rules andregulations.

(3)Messagesofsafetyappearinthemanualandon themachine:Allmessagesofsafetyareidentified byeitherwordof"DANGER","WARNING"and "CAUTION".

1)DANGER-Indicatesanimminentlyhazardous situationwhich,ifnotavoided,willresultin deathorseriousinjuryandisrepresentedas follows:

2)WARNING-Indicatesapotentiallyhazardous situationwhich,ifnotavoided,couldresultin deathorseriousinjuryandisrepresentedas follows:

3)CAUTION-Indicatesapotentiallyhazardous situationwhich,ifnotavoided,mayresultinminorormoderateinjury.Itmayalsobeusedto alertagainstpossibledamagetothemachine anditscomponentsandisrepresentedasfollows:

(4)Itisverydifficulttoforecasteverydangerthatmay occurduringoperation.However,safetycanbeensuredbyfullyunderstandingproperoperatingproceduresforthismachineaccordingtomethods recommendedbyManufacturer.

(5)Whileoperatingthemachine,besuretoperform workwithgreatcare,soasnottodamagethemachine,orallowaccidentstooccur.

(6)ContinuestudyingthemanualuntilallSafety,OperationandMaintenanceproceduresarecompletely understoodbyallpersonsworkingwiththemachine.

SAFETYPRECAUTIONS

Theproperandsafelubricationandmaintenance forthismachine,recommendedbyManufacturer, areoutlinedintheOPERATOR’SMANUALforthe machine.

Improperperformanceoflubricationormaintenanceproceduresaredangerousandcouldresult ininjuryordeath.ReadandunderstandtheMANUALbeforeperforminganylubricationormaintenance.

Theservicemanormechanicmaybeunfamiliarwith manyofthesystemsonthismachine.Thismakesit importanttousecautionwhenperformingservicework. Aknowledgeofthesystemandorcomponentsisimportantbeforetheremovalordisassemblyofanycomponent.

Becauseofthesizeofsomeofthemachinecomponents,theservicemanormechanicshouldcheckthe weightsnotedinthismanual.Useproperliftingprocedureswhenremovinganycomponents.Weightofcomponentstableisshowninthesection; SPECIFICATIONS.

Thefollowingisalistofbasicprecautionsthatmustalwaysbeobserved.

(1)ReadandunderstandallWarningplatesanddecal onthemachinebeforeOperating,Maintainingor Repairingthismachine.

(2)Alwayswearprotectiveglassesandprotective shoeswhenworkingaroundmachines.Inparticular,wearprotectiveglasseswhenusinghammers, punchesordriftsonanypartofthemachineorattachments.Useweldersgloves,hood/goggles, apronandtheprotectiveclothingappropriatetothe weldingjobbeingperformed.Donotwearloosefittingortornclothing.Removeallringsfromfingers, loosejewelry,confinelonghairandlooseclothing beforeworkingonthismachinery.

(3)Disconnectthebatteryandhanga"DoNotOperate"tagintheOperatorsCompartment.Removeignitionkeys.

(4)Ifpossible,makeallrepairswiththemachine parkedonafirmlevelsurface.Blockthemachine soitdoesnotrollwhileworkingonorunderthemachine.Hanga"DoNotOperate"tagintheOperatorsCompartment.

(5)Donotworkonanymachinethatissupportedonly bylift,jacksorahoist.Alwaysuseblocksorjack

stands,capableofsupportingthemachine,before performinganydisassembly. Donotoperatethismachineunlessyouhave readandunderstandtheinstructionsintheOPERATOR’SMANUAL.Impropermachineoperationisdangerousandcouldresultininjuryor death.

(6)Relieveallpressureinair,oilorwatersystemsbeforeanylines,fittingsorrelateditemsaredisconnectedorremoved.Alwaysmakesureallraised componentsareblockedcorrectlyandbealertfor possiblepressurewhendisconnectinganydevice fromasystemthatutilizespressure.

(7)Lowerthebucket,dozer,orotherattachmentsto thegroundbeforeperforminganyworkonthemachine.Ifthiscannotbedone,makesurethebucket, dozer,ripperorotherattachmentisblockedcorrectlytopreventitfromdroppingunexpectedly.

(8)Usestepsandgrabhandleswhenmountingordismountingamachine.Cleananymudordebrisfrom steps,walkwaysorworkplatformsbeforeusing. Alwaysfacetothemachinewhenusingsteps,laddersandwalkways.Whenitisnotpossibletouse thedesignedaccesssystem,provideladders,scaffolds,orworkplatformstoperformsaferepairoperations.

(9)Toavoidbackinjury,useahoistwhenliftingcomponentswhichweigh20kg(45lbs)ormore.Make sureallchains,hooks,slings,etc.,areingoodconditionandarethecorrectcapacity.Besurehooks arepositionedcorrectly.Liftingeyesarenottobe sideloadedduringaliftingoperation.

(10)Toavoidburns,bealertforhotpartsonmachines whichhavejustbeenstoppedandhotfluidsin lines,tubesandcompartments.

(11)Becarefulwhenremovingcoverplates.Gradually backoffthelasttwocapscrewsornutslocatedat oppositeendsofthecoverordeviceandcarefully prycoverloosetorelieveanyspringorotherpressure,beforeremovingthelasttwocapscrewsor nutscompletely.

(12)Becarefulwhenremovingfillercaps,breathersand plugsonthemachine.Holdaragoverthecapor plugtopreventbeingsprayedorsplashedbyliquidsunderpressure.Thedangerisevengreaterif themachinehasjustbeenstoppedbecausefluids canbehot.

(13)Alwaysusethepropertoolsthatareingoodconditionandthataresuitedforthejobathand.Besure youunderstandhowtousethembeforeperforming anyservicework.

(14)Reinstallallfastenerswiththesamepartnumber. Donotusealesserqualityfastenerifreplacements arenecessary.

(15)Repairswhichrequireweldingshouldbeperformedonlywiththebenefitoftheappropriatereferenceinformationandbypersonneladequately trainedandknowledgeableinweldingprocedures. Determinetypeofmetalbeingweldedandselect correctweldingprocedureandelectrodes,rodsor wiretoprovideaweldmetalstrengthequivalentat leasttothatoftheparentmetal.Makesuretodisconnectbatterybeforeanyweldingproceduresare attempted.

(16)Donotdamagewiringduringremovaloperations. Reinstallthewiringsoitisnotdamagednorwillbe damagedinoperationofthemachinebycontacting sharpcorners,orbyrubbingagainstsomeobjector hotsurface.Donotconnectwiringtoalinecontainingfluid.

(17)Besureallprotectivedevicesincludingguardsand shieldsareproperlyinstalledandfunctioningcorrectlybeforestartingarepair.Ifaguardorshield mustberemovedtoperformtherepairwork,use extracautionandreplacetheguardorshieldafter repairiscompleted.

(18)Themaintenanceandrepairworkwhileholdingthe bucketraisedisdangerousduetothepossibilityof afallingattachment.Don’tfailtolowertheattachmentandplacethebuckettothegroundbefore startingthework.

(19)Looseordamagedfuel,lubricantandhydraulic lines,tubesandhosescancausefires.Donotbend orstrikehighpressurelinesorinstalloneswhich havebeenbentordamaged.Inspectlines,tubes andhosescarefully.Donotcheckforleakswith yourhands.Verysmall(pinhole)leakscanresultin ahighvelocityoilstreamthatwillbeinvisibleclose tothehose.Thisoilcanpenetratetheskinand causepersonalinjury.Usecard-boardorpaperto locatepinholeleaks.

(20)Tightenconnectionstothecorrecttorque.Make surethatallheatshields,clampsandguardsareinstalledcorrectlytoavoidexcessiveheat,vibration orrubbingagainstotherpartsduringoperation. Shieldsthatprotectagainstoilsprayontohotexhaustcomponentsineventofaline,tubeorseal failuremustbeinstalledcorrectly.

(21)Donotoperateamachineifanyrotatingpartis damagedorcontactsanyotherpartduringoperation.Anyhighspeedrotatingcomponentthathas beendamagedoralteredshouldbecheckedfor balancebeforereusing.

(22)Becarefulwhenservicingorseparatingthetracks (crawlers).Chipscanflywhenremovingorinstallingatrack(crawlers)pin.Wearsafetyglassesand longsleeveprotectiveclothing.Tracks(crawlers) canunrollveryquicklywhenseparated.Keepaway fromfrontandrearofmachine.Themachinecan moveunexpectedlywhenbothtracks(crawlers) aredisengagedfromthesprockets.Blockthemachinetopreventitfrommoving.

NOTE:

ThisManualispreparedasatechnicalmaterialin whichtheinformationnecessaryforthemaintenance andrepairingservicesofourhydraulicexcavatorsare collected,andiscategorizedinto7Chapters,Specification,Maintenance,System,Disassembly,Troubleshooting,Engine,andInstallationProceduresfor OptionalAttachment.

•TheChapter"Specification"describesthespecificationsforentiremachineandmaterial,whichare instructiveforreplacementandrepairingofattachments.

•TheChapter"Maintenance"describesthematerial, whichishelpfulformaintenanceserviceandadjustmentsforentiremachine.

•TheChapter"System"describestheoperatingsystemlikehydraulicsystem,electricsystem,components,andsoon.

•TheChapter"Disassembly"describestheremoval andinstallingofassemblymountedontheupper structureandundercarriage,andtheassembling anddisassemblingoftheassociatedhydraulic equipment.

•TheChapter"Troubleshooting"describeshowto findthefaultequipment.

•TheChapter"Engine"describestheenginesmakinguseofthe"MaintenanceManual"providedby thesuppliers.

•TheChapter"InstallationProceduresforOptional Attachment"describesthesupplementsaddedon requestasrequired.

ThisManualmaybeproperlyrevisedduetotheimprovementofproducts,modificationofspecifications, etc.Andtherearecaseswherethesystemonactual machineandapartofthecontentsofthismanualmay differduetothevariationsofspecificationbycountries. Forthesectioninwhichthedescriptionishardlyunderstood,contactourdistributor.

Thenumberisassignedtoeveryparthandledinthis Manualonaccountofthedescription,buttheparts, whichcannotbesuppliedasservicepartsarecontained.Therefore,theordermustbeplacedwithrespectiveformalnumberwithdueconfirmationonthe PartsManualforapplicablemachine.

TABLEOFCONTENTS

1.1GENERALPRECAUTIONSFORMAKINGREPAIRS......................................................1-3

1.1.1PREPARATIONBEFOREDISASSEMBLING..........................................................1-3

1.1.2SAFETYWHENDISASSEMBLINGANDASSEMBLING........................................1-3

1.1.3DISASSEMBLINGANDASSEMBLINGHYDRAULICEQUIPMENT.......................1-3

1.1.4ELECTRICALEQUIPMENT.....................................................................................1-4

1.1.5HYDRAULICPARTS................................................................................................1-5

1.1.6WELDREPAIR.........................................................................................................1-5

1.1.7ENVIRONMENTALISSUES.....................................................................................1-5 1.2INTERNATIONALUNITSYSTEM.....................................................................................1-6

IssueDateofIssueApplicableMachinesRemarks

FirsteditionJuly,2006

August,2006

SK330-8:LC10-07001~

SK350LC-8:YC10-03501~

SK200-8:YN11-45001~

S5YN0118E01 (ASIA,OCE)

SK210LC-8:YQ11-06001~ (ASIA,OCE)

October,2006SK250-8:LQ12-06001~

SK260LC–8:LL12-05001~ (ASIA,OCE)

December,2006SK850LC:LY01-00101~

1.1GENERALPRECAUTIONSFOR MAKINGREPAIRS

1.1.1PREPARATIONBEFORE DISASSEMBLING

(1)Knowledgeofoperatingprocedure

ReadOperator’sManualcarefullytounderstand theoperatingprocedure.

(2)Cleaningmachines

Cleanmachinesofsoil,mud,anddustbefore carryingintotheserviceshop.

Carryingasoiledmachineintotheserviceshop, causesmakinglessefficientworkanddamageof parts.

(3)Inspectingmachines

Confirmthedisassemblingsectionbeforestarting work,determinethedisassemblyproceduretaking theconditionsinworkshopintoaccount,and requesttoprocurenecessarypartsinadvance.

(4)Recording

Recordthefollowingitemstokeepcontactand preventmalfunctionfromrecurring.

1)Inspectingdate,place

2)Modelname,SerialnumberandRecordon hourmeter

3)Troublecondition,place,cause

4)Visibleoilleak,waterleakanddamage

5)Cloggingoffilters,oillevel,oilquality,oil contaminationandlooseness.

6)Examinetheproblemsonthebasisofmonthly operationratewiththelastinspectiondateand recordsonhourmeter.

(5)Arrangementandcleaninginserviceshop

1)Toolsrequiredforrepairwork.

2)Preparetheplacestoputthedisassembled parts.

3)Prepareoilpansforleakingoil,etc.

1.1.2SAFETYWHENDISASSEMBLINGAND ASSEMBLING (1)Safety

1)Wearappropriateclothing,safetyshoes,safety helmet,goggles,andclotheswithlongsleeves.

2)Attach"Don’toperate"tagtocontrollever,and beginameetingbeforestartingthework.

3)Beforestartinginspectionandmaintenance stoptheengine.

4)Confirmthepositionoffirst-aidkitandfire extinguisher,andalsowheretomakecontact foremergencymeasureandambulanceto prepareforaccidentsandfire.

5)Chooseahard,leverandsafeplace,andput attachmentonthegroundwithoutfail.

6)Usehoist,etc.toremovepartsofheavyweight (23kg[50lb]ormore).

7)Usepropertools,andchangeorrepair defectivetools.

8)Machineandattachmentrequiredtoworkinthe liftingconditionshouldbesupportedwith supportsorblockssecurely.

1.1.3DISASSEMBLINGANDASSEMBLING

HYDRAULICEQUIPMENT

(1)Removinghydraulicequipmentassy

1)Beforeremovingpipes,releasethepressureof hydraulicoiltank,oropenthecoveronthe returnsidetotank,andtakeoutthefilter.

2)Draintheoilintheremovedpipesintopanto preventtheoilfromspillingontheground.

3)Pipeswithplugsorcapstopreventoilleaking, entryofdust,etc.

4)Cleantheoutsidesurfaceofequipment,etc. beforedisassembling,anddrainhydraulicoil andgearoilbeforeputtingthemonworking bench.

(2)Disassemblinghydraulicequipment

1)Sinceperformanceandfunctionofhydraulic equipmentafterdisassemblyandassembly resultsinimmunityfromresponsibilityonthe manufacture’sside,disassembly,assembly andmodificationwithoutpermissionarestrictly prohibited.

2)Ifitisunavoidablynecessarytodisassemble andmodify,itshouldbecarriedoutbyexperts orpersonnelqualifiedthroughservicetraining.

3)Makematchmarkonpartsforreassembling.

4)Beforedisassembling,readDisassembling Instructioninadvance,anddetermineifthe disassemblyandassemblyarepermittedor not.

5)Forpartswhicharerequiredtousejigand tools,don’tfailtousethespecifiedjigandtools.

6)Forpartswhichcannotberemovedinthe specifiedprocedure,neverforceremoval.First checkforthecause.

7)Theremovedpartsshouldbeputinorderand taggedsoastoinstallonproperplaceswithout confusion.

8)Forcommonparts,payattentiontothequantity andplaces.

(3)Inspectingparts

1)Checkthatthedisassembledpartsarefree fromadherence,interferenceanduneven workingface.

2)Measurethewearofpartsandclearance,and recordthemeasuredvalues.

3)Ifanabnormalityisdetected,repairorreplace theparts.

(4)Reassemblinghydraulicequipment

1)Duringthepartscleaning,ventilatetheroom.

2)Beforeassembly,cleanpartsroughlyfirst,and thencompletely.

3)Removeadheringoilbycompressedair,and applyhydraulicoilorgearoil,andthen assemblethem.

4)ReplacetheremovedO-ring,back-upringsand oilsealwithnewones,andapplygreaseoilon thembeforeassembling.

5)Removesdirtandwateronthesurfaceon whichliquidsealantareapplied,decrease them,andapplyliquidsealantonthem.

6)Beforeassembling,removerustpreventiveson newparts.

7)Usespecialtoolstofitbearings,bushingandoil seal.

8)Assemblepartsmatchingtothemarks.

9)Aftercompletion,checkthatthereisno omissionofparts.

(5)Installinghydraulicequipment

1)Confirmhydraulicoilandlubricationoil.

2)Airreleaseisrequiredinthefollowingcases; 1.Changeofhydraulicoil

2.Replacementofpartsonsuctionpipeside

3.Removingandattachinghydraulicpump

4.Removingandattachingswingmotor

5.Removingandattachingtravelmotor

6.Removingandattachinghydrauliccylinder

Ifhydraulicoilandlubricatingoilarenot filledandalsoairbleedisnotperformed, thehydraulicequipmentmaybedamaged.

3)Forairbleedofhydraulicpumpandswing motor,loosendrainplugontheupperpart,start engine,andruninlowidling,thenbleedairuntil hydraulicoiliscomesout.Aftercompletionof comes,tightenplugsecurely.

4)Forairbleedoftravelmotorandhydraulic cylinder,startsengineandoperateitfor10 minutesormoreatno-loadandlowspeed.

Forcylinder,don’tmoveittothestrokeend atbeginning.

5)Airinpilotcircuitcanbebleedoutbyonly operatingdigging,swingandtravelingmotions thoroughly.

6)Checkhydraulicoillevel.

Moveattachmentstohydraulicoilcheck position,andcheckhydraulicoilleveloftank. Refilloiliftheoillevelislowerthanthespecified level.

Howtocheckoillevelofhydraulicoiltank

1.1.4ELECTRICALEQUIPMENT

(1)Thedisassemblyofelectricalequipmentisnot allowed.

(2)Handleequipmentwithcaresoasnottodropitor bumpit.

(3)Connectorshouldberemovedbyunlockingwhile holdingtheconnector. Neverstressintensiontothecaulkedsectionby pullingwire.

(4)Checkthatconnectorisconnectedandlocked completely.

(5)Enginekeyoffbeforeremovingandconnecting connector.

(6)Enginekeyoffbeforetouchingterminalsofstarter andalternator.

(7)Removebatterygroundingterminalbefore beginningworkclosetobatteryandbatteryrelay withtools.

(8)Washmachinewithcaresoasnottosplashwater onelectricalequipmentandconnector.

(9)Whenwaterhasenteredinthewaterproofed connector,theremovingofwaterisnoteasy.So checktheremovedwaterproofedconnectorwith caretoprotectitfromentryofwater.Ifmoisture adheresonit,dryitcompletelybeforeconnecting.

(2)Flexiblehose(Fhose)

•Eveniftheconnectorandlengthofhosearethe same,thepartsdifferaccordingtothe withstandingpressure.Useproperparts.

•Tightenittothespecifiedtorque,andcheckthat itisfreefromtwist,overtension,interference, andoilleak.

1.1.6WELDREPAIR

(1)Theweldrepairshouldbecarriedoutbyqualified personnelinthespecifiedprocedureafter disconnectingthegroundingcableofbattery.Ifthe groundingcableisnotdisconnected,theelectrical equipmentmaybedamaged.

Batteryfluidisdangerous.

Thebatteryfluidisdilutesulfuricacid,andcauses scaldandlossofeyesightbyadheringoneyes, skinandclothes.Whenthefluidhasadheredon them,takeanemergencymeasureimmediatelyand seeadoctorformedicaladvice.

•Whenithasadheredonskin; Washwithsoapandwater.

•Whenithasgotineyes; Washinwaterfor10minutesormore immediately.

•Whenithasspilledoutinlargequantity; Usesodiumbicarbonatetoneutralize,orwash awaywithwater.

•Whenitwasswallowed; Drinkmilkorwater.

•Whenithasadheredonclothes; Washitimmediately.

1.1.5HYDRAULICPARTS

(1)O-ring

•CheckthatO-ringisfreefromflawandhas elasticitybeforefitting.

•EvenifthesizeofO-ringisequal,theusage differs,forexampleindynamicandstatic sections,therubberhardnessalsodiffers accordingtothepressureforce,andalsothe qualitydiffersdependingonthematerialstobe seated.So,chooseproperO-ring.

•FitO-ringsoastobefreefromdistortionand bend.

•Floatingsealshouldbeputinpairs.

(2)Removepartswhichmaycausefireduetothe entryofsparkbeforehand.

(3)Repairattachmentswhicharedamaged,giving particularattentiontotheplatedsectionofpiston rodtoprotectitfromsparks,anddon’tfailtocover thesectionwithflame-proofclothes.

1.1.7ENVIRONMENTALISSUES

(1)Engineshouldbestartedandoperatedintheplace whereaircanbesufficientlyventilated.

(2)Wastedisposal

Thefollowingpartsfollowstheregulation. Wasteoil,wastecontainerandbattery

(3)Precautionsforhandlinghydraulicoil Hydraulicoilmaycauseinflammationofeyes. Weargogglestoprotecteyesonhandlingit.

•Whenithasgotineyes; Washeyeswithwateruntilthestimulusisgone.

•Whenitwasswallowed; Don’tforcehimtovomitit,butimmediately receivemedicaltreatment.

•Whenithasadheredonskin; Washwithsoapandwater.

(4)Others

Forspareparts,greaseandoil,useKOBELCO genuineones.

This is the sample of the manual if you need complete manual Click Here to download

1.2INTERNATIONALUNITSYSTEM

Introduction

AlthoughthismanualusestheSIunitssystem.Outline ofSIunitssystemisdescribedhere. Givenhereinunderareanexcerptoftheunitsthatare relatedtothismanual:

1.EtymologyofSIUnits

English:InternationalSystemofunits

2.ConstructionofSIUnitSystem

(4)DerivedUnitsbearingPeculiarDesignations

Table1-4

QUANTITYUNITSYMBOLFORMULA

FrequencyhertzHz1Hz=1/s ForcenewtonNkg•m/s 2 Pressureand StresspascalPaN/m2

Energy,Work andQuantityof

(1)BasicUnits

Table1-1 QUANTITIESDESIGNATIONSIGN

Length

Electric potential difference, Voltage,and Electromotive force voltVW/A Quantityof staticelectricity andElectric capacitance faradFC/V Electric resistance ohmV/A Celcius temperature celcius degreeor degree °C(t+273.15)K

(5)PrefixesofSI

(2)SupplementaryUnits

(3)DerivedUnitsofBasicUnits

(6)UnitConversionTable

QUANTITIESJISSIREMARKS

Masskgkg

ForcekgfN1kgf=9.807N

Torquekgf•mN•m1kgf•m=9.807N•m

Pressurekgf/cm2 MPa1kgf/cm2=0.098MPa

MotivepowerPSkW1PS=0.7355kW

Revolutionr.p.mmin–1 1r.p.m=1min–1

[MEMO]

2.SPECIFICATIONS

TABLEOFCONTENTS

2.1NAMEOFCOMPONENTS................................................................................................2-3

2.2GENERALDIMENSIONS..................................................................................................2-4

2.2.1SK850LC[8.25m(27ft-1in)Boom+3.60m(11ft-10in)StandardArm+3.50m3 (4.58cu•yd)Bucket].2-4

2.2.2SK850LC[8.25m(27ft-1in)Boom+4.40m(14ft-5in)LongArm+2.80m3 (3.66cu•yd)Bucket].........2-5

2.2.3SK850LC[8.25m(27ft-1in)Boom+2.90m(9ft-6in)ShortArm+4.60m3 (6.02cu•yd)Bucket]..........2-5

2.3WEIGHTOFCOMPONENTS............................................................................................2-6

2.4TRANSPORTATION..........................................................................................................2-8

2.4.1MACHINEPREPARATION(For650mm(25.6in)/750mm(29.5in))...................2-8

2.4.2MACHINEPREPARATION(For900mm(35.4in)).................................................2-9

2.4.3DIMENSIONSOFATTACHMENT...........................................................................2-10

2.5LIFTINGMACHINE............................................................................................................2-12

2.6SPECIFICATIONSANDPERFORMANCE.......................................................................2-13

2.6.1SPEEDANDCLIMBINGCAPABILITY.....................................................................2-13

2.6.2ENGINE....................................................................................................................2-13

2.6.3HYDRAULICCOMPONENTS..................................................................................2-13

2.6.4WEIGHT...................................................................................................................2-13

2.7TYPEOFCRAWLER.........................................................................................................2-14

2.7.1SK850LC..................................................................................................................2-14

2.8ENGINESPECIFICATIONS..............................................................................................2-15

2.8.1SPECIFICATIONS....................................................................................................2-15

2.8.2ENGINECHARACTERISTICCURVE(KomatsuSAA6D140E-5)............................2-16

FirsteditionDecember,2006SK850LC:LY01-00101~S5LY0201E01K

2.2GENERALDIMENSIONS

2.2.1SK850LC[8.25m(27ft-1in)Boom+3.60m(11ft-10in)StandardArm+3.50m3 (4.58cu•yd)Bucket]

Dimensionsmarked*donotincludetheheightoftheshoelug.

2.2.2SK850LC[8.25m(27ft-1in)Boom+4.40m(14ft-5in)LongArm+2.80m3 (3.66cu•yd)Bucket]

2.2.3SK850LC[8.25m(27ft-1in)Boom+2.90m(9ft-6in)ShortArm+4.60m3 (6.02cu•yd)Bucket]

Dimensionsmarked*donotincludetheheightoftheshoelug.

2.3WEIGHTOFCOMPONENTS

Item

Unit;kg(lb)

Model SK850LC

Machinecomplete78,800(173,750)

1.Upperframeassy(Assemblyoffollowing:)29,200(64,390)

1.1Upperframe6,860(15,130)

1.2Counterweight

Counterweight(Semi-weighted)

Counterweight(weighted) 13,300(29,330)

1.3Cab290(640)

1.4Engine*1,675(3,693)

1.5Hydraulicoiltank*540(1,191)

1.6Fueltank*410(904)

1.7Slewingmotor(includingreductionunit)*482(1,063)2

1.8Controlvalve*400(882)

1.9Boomcylinder*870(1,918)2

1.10Pin(formountingboom)260(573)

1.11Pump155(342)2

1.12Radiator(includingintercooler)*400(882)

1.13Oilcooler*245(540)

2.Lowerframeassy(Assemblyoffollowing:)31,100(68,580)

2.1Lowerframe12,100(26,680)

2.2Slewingbearing1,290(2,844)

2.3Travelmotor(includingreductionunit)*860(1,896)2

2.4Upperroller46(101)6

2.5Lowerroller137(302)18

2.6Frontidler480(1,058)2

2.7Idleradjuster625(1,378)2

2.8Sprocket 175(386)2

2.9Swiveljoint*70(154)

2.10Trackguide80(176)4

2.11Tracklinkwith750mm(29.5in)shoesassy

Tracklinkwith650mm(25.6in)shoesassy

Tracklinkwith900mm(35.4in)shoesassy

9,075(20,010)2

8,410(18,544)2 10,200(22,491)2

2.11.1Tracklinkassy1,900(4,190)2

3.Attachment(Assemblyoffollowing/STD:)

15,250(33,630) (8.25m(27ft-1in)Boom+3.60m(11ft-10in)Arm+3.50m3 (4.58cu•yd)Bucket)

3.1Bucketassy(STD)2,610(5,755)

3.2STDArmassy(Assemblyoffollowing:)4,230(9,327)

3.2.1STDArm2,535(5,590)

3.2.2Bucketcylinder*790(1,742)

3.2.3Idlerlink85(187)2

3.2.4Bucketlink370(816)

3.2.5Pin(2pcs.formountingbucketcylinder/2pcs.formountingbucket)315(695)

3.3Boomassy(Assemblyoffollowing:)8,360(18,434)

3.3.1Boom7,040(15,523)

3.3.2Armcylinder*1,175(2,591)

3.3.3Pin(Mountingarm•Mountingarmcylinder)190(419)

4.Lubricantandwater(Assemblyoffollowing:)1,929(4,253) 4.1Hydraulicoil856(1,887) 4.2Engineoil58(128) 4.3Fuel965(2,129) 4.4Water50(110)

Marks*showdryweight.

2.4TRANSPORTATION

1.Knowthetotalweight,length,widthandheightofthemachinebeingtransported.

2.Knowroutetobetraveled.Investigatebridges,overpasses,heightofroadsignsonroute.

3.Obtainanypermitsrequiredfrompropergovernmentagenciesformachinetransportation.

4.Useonlyatrailerwitharatedcapacitysufficienttotransportthemachine.

5.Makecertaintrailerhasrampsorarampisavailableforloadingandunloadingthemachine.

2.4.1MACHINEPREPARATION(For650mm(25.6in)/750mm(29.5in))

Unit:mm(ft-in)

Shoetype mm(in)

OverallWidthofCrawerWeight mm(ft-in)kg(lb)

650(25.6)3,400(11'2")48,200(106,300) 750(29.5)3,500(11'6")48,800(107,600)

2.4.2MACHINEPREPARATION(For900mm(35.4in))

•WidthofUpperStructure:3,350mm(11ft-0in)

•Weight:24,900kg(54,900lb)

•WidthofCrawerFrame:900mm(35.4in) (withstep):1,100mm(3ft-7in)

•Weight:25,100kg(55,300lb)

•Applythisdrawingfortransportationtomachinethat isequippedshoewidthof900mm(35.4in).

•WidthofRevolvingUpperStructure(Without catwalk)

2.4.3DIMENSIONSOFATTACHMENT (1)BOOM

Type 8.25m(27ft-1in)Boom

8.622.271.10 (28'3"7'5"3'7")

Weightkg(lbs)8,220(18,120)

Thisassemblyincludestheweightsbelow.

(2)Arm

Item

LengthHeightWidth

Type 3.60m(11ft-10in)Arm4.40m(14ft-5in)Arm

5.191.370.705 (17'0"4'6"2'4") 6.001.430.705 (19'8"4'8"2'4")

Weightkg(lbs)4,350(9,590)4,830(10,650)

Thisassemblyincludestheweightsbelow.

(3)Counterweight

(4)Boomcylinder

(5)Catwalk

(6)3.50m3 (4.58cu•yd)Bucket

(7)Handle

2.5LIFTINGMACHINE

Thefollowingprocedureareforliftingthemachine,asbuiltbyKOBELCOCONSTRUCTIONMACHINERYCO.,LTD Theseproceduredonottakeintoaccountmodificationsmadetothemachinethataffectmachineweightorcenter orgravity.

•Wireropeorchainusedforliftthemachinemustbeofsufficientweightliftingcapacityforthismachine.

•Improperliftingmethodorrope/chainriggingmaycauseunexpectedmovementorslipofthemachine whenlifted,resultinginseriousinjuryordeathordamagetothemachine.

•Whenliftingthemachineoperatethecontrols,slowlyandsmoothlyavoidinganysudden/fastcontrol movementforsafetyofpeopleinvolvedandliftrigging.

•Whenthemachineisliftedwithassistanceofoneormoreworkersoperationsignals/communication mustbeunderstoodbyallinvolvedtoavoidinjuryordeath.

•Duringthemachineliftprocedure,keeppeopleawayfromthearea,especiallytheareaunderthe machine.

Carryouttheliftingworkonfilmlevelground.

(1)Positionthemachineasshowninthefigure.

(2)Liftupmachinewithanangleoftwowireropesadjustedwithintherangeof40° slowly

(3)Afterworking,stopmachineonceandliftmachineagainslightlyaftermachinehasstabilized.

2.6SPECIFICATIONSANDPERFORMANCE

2.6.1SPEEDANDCLIMBINGCAPABILITY

Area&Model SK850LC

Item

Swingspeedmin-1 (rpm)8.4(8.4)

Travelspeed(1-speed/2speed) km/h(mile/h)2.7/4.2(1.68/2.61)

Gradeability%(degree)70(35)

2.6.2ENGINE

EnginemodelkomatsuLtd.SAA6D140E-5

Type

Numberofcylinders—BoreStroke

Water-cooled,4cycle6cylinderelectronically-controlled commonrailsystemtypedieselenginewithturbocharger

6-ø140mm165mm (5.51in6.50in)

Totaldisplacement15.24L(929.9cu•in)

Ratedoutput/Enginespeed370kW(503PS)/1,800min-1

Maximumtorque/Enginespeed2,195N•m(1,620lbf•ft)/1,350min-1

Starter24V/11.0kW

Alternator24V/60A

2.6.3HYDRAULICCOMPONENTS

Hydraulicpump TamdemVariabledisplacementaxialpistonpump3+gearpump1

Hydraulicmotor(swing)Axialpistonmotor2

Hydraulicmotor(travel)Variabledisplacementaxialpistonmotor2

Controlvalve6-spoolcontrolvalve1

Cylinder (Boom,Arm,Bucket)

Doubleactioncylinder

OilcoolerAir-cooledtype

2.6.4WEIGHT

Unit:kg(lbs) SK850LC

Fullyequippedweight78,820(173,800)

Upperstructure29,200(64,390)

Lowermachinery31,100(68,580)

Attachment

8.25m(27ft-1in)Boom+3.60m(11ft-10in)Arm +3.50m3 (4.58cu•yd)Bucket

15,250(33,630)

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