Kobelco SK25SR SK30SR SK35SR2 Operator's Manual PDF

OPERATOR'S MANUAL HYDRAULIC EXCAVATOR

SK25SR SK30SR SK35SR Applicable: SK25SR PV10001~ Applicable: SK30SR PW07001~ Applicable: SK35SR PX05001~ S2PW0001E-00

02/97

OPERATION & MAINTENANCE MANLJ AL

APPLICABLE NO. SK25SR PV10001~ SK30SR PW07001~ SK35SR P X 05001~

Iz~

Readand understand theseinstructions. ~] Failure todoso willincrease riskofinjury.~

BOOK CODE NO. S2PW0001E

Im )ortant Information

Donotoperate or maintain thismachine untill youreadthisManual andunderstand theinstructions.

Improper operation ormaintenance ofthismachine maycause accidents andcould result inserious injury or death.

Always keepthisManual in theoperators cabor canopy.

If itis missing or damaged, place an ordertoa KOBELCO distributor fora replacement.

If youhaveanyquestions, please consult yourKOBELCO distributor. ¯ SAFETY INFORMATION Mostaccidents, whichoccurduringoperation, aredue to neglectof precautionary measures and safety rules.

Sufficient careshould be takento avoidtheseaccidents.

Erroneous operation, lubrication or maintenance services are verydangerous and may causeinjuryor deathof personnel.

Thus,precautionary measures, or notes,writtenin thisManualshouldbe readand understood by personnel beforestarting eachtask.

Operation, inspection, andmaintenance shouldbe carefully carried out,andsafetymustbe given the firstpriority.

Messages of safetyareindicated with~, marks.Thesafetyinformation containedin thisManualis intended onlyto supplement safetycodes,insurance requirements, local laws,rulesandregulations.

Messages of safetyappearin thisManualand on the machine.

All messages of safetyare identified by the words "DANGER","WARNING" and "CAUTION".

Thesewordsmeanthe following ’ DANGER

Indicates an imminently hazardous situation which, if notavoided, willresult in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, could result in serious injury.

Indicates a potentially hazardous situation which, if notavoided, mayresult in minoror moderate injury.

It mayalsobe usedto alertagainst possible damage to themachine anditscomponents.

It is verydifficult forus to forecast everydangerthatmay occurduringoperation.

However, safety can be ensuredby operatingthis machineaccordingto methods recommendedby KOBELCO. Whileoperating machine, be sureto performworkwith greatcare,so as notto damagethemachine, or letaccidents occur.

Pleasecontinue studying thisManualuntilproperoperation is completely understood.

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FOREWORD ThisManualdescribes procedures foroperation, handling, lubrication, maintenance, checking, andadjustment.

It willhelptheoperator realizepeakperformance through effective, economical machineoperationmaintenance.

Beforeoperating thismachine, readthisManualthoroughly and,makesurethatyouunderstanditscontents.

Failure to follow theinstructions givenin thisManualmayleadto a serious failure. ¯ Pleasecontinue studying thisManualuntilproperoperation is completely understood. ¯ ThisManual describes thebasictechniques.

Skillis gained as theoperator utilizes thesetechniquesand perfects themwithan actualmachine.

Some illustrated pictures maybedifferent from yourmachine,as technical improvement is continuously on going.

Manuals are continuously updatedand issuedto reflectthesechanges.

This operationand maintenance Manualmay not containattachments and optionalequipmentthat are available in your area.Pleaseconsultyour KOBELCOdistributor for those itemsyou may require.

Materials andspecifications aresubject to change without notice.

¯ REQUESTS FROM THE MANUFACTURER WARRANTY

The machine is guaranteed according to the manufacturer’sWarranty Certificate.

Themanufacturer willrepair,freeof charge,suchmalfunctions andfaultsfor whichthe manufacturer is deemedresponsible by the WarrantyCertificate.

KOBELCOis not responsible formalfunctions andfaultscausedby negligence or failure to followinstructions givenin theoperation Manual.

PERIODICAL INSPECTION SERVICE

Afterdelivery of thismachine, the KOBELCOdistributor willmakeperiodical service inspections.

Theseinspections willbe freeof charge andat intervals for a period we set.

For questions aboutservicewhichthe usermay receive, contactyourKOBELCO distributor.

NOTICE TO THE USER

Pleasenotethatthe contents of thisManualmaydifferfromthespecifications of themachine we deliver.

If anyquestion arisesas to thecontents of this Manual,feelfreeto contactyourKOBELCOdistributor.

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¯ FOR ORDERING Forordering partsandservice, inform thedistributor of yourmachine’s serial number andengineserial number stamped in thepositions shownon thebelowillustration.

Forfuture reference, record theseserial numbers in thespaces below¯ , I

MachineNo.

SK25SR PV-

f I

,: SK30SRPW-

i SK35SRPX-

I t-I

EngineNo.

3TNE78A

t / / II

I -fI

’ 3TNE82A

’ 3TNE84A

I/I/ ¯ POSITION OF MACHINE’S

¯ POSITIONOF ENGINE’S SERIAL NUMBER

¯ HOUR METER

HOUR O IolololololoiH O

ill ENG,~.o YA~UER OIESEL ENGINE

~oj~

I~._

II

Thenumbers in theillustrations areforexplanation onlyanddiffer fromactual numbers.

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WARN

NG

SAFETY ,~ WARNING

,~ WARN

NG

Theproper andsafelubrication andmaintenance forthismachine, recommended

by KOBELCO are outlinedin the OPERATOR’S MANUALfor this machine.

Donotoperate thismachine unless youhavereadand understood theinstructions in theOPERATOR’S MANUAL,Improper machineoperation is dangerous andcould result ininjury ordeath.

Improper performance of lubrication or maintenanceprocedures aredangerous andcouldresult in injuryor death.Readand understand the OPERATOR’SMANUALbeforeperformingany lubrication or maintenance.

allpressure in air,oilor water sys6. Relieve temsbeforeanylines,fittings or related items are disconnected or removed.

Alwaysmake sure all raisedcomponents areblocked correctly andbe alertforpossiblepressure whendisconnecting anydevicefroma system thatutilizes pressure.

The serviceman or mechanicmay be unfamiliarwithmanyof the systemson thismachine. 7. Lowerthebucket,blade,ripperor other This makesit important to use cautionwhen attachmentsto the groundbefore perperforming servicework.A knowledgeof the formingany workon themachine.

If this systemand or components is important before cannot be done,make sure the bucket, the removalor disassembly of any component. blade, ripper or other attachmentis blocked correctly to prevent it fromdropBecauseof the size of some of the machine ping unexpectedly. components, the serviceman or mechanic shouldchecktheweightsnotedin thisManual. 8. Use stepsand grab handleswhen mounting or dismounting a machine.Cleanany Use properliftingprocedures when removing mud or debrisfrom steps,walkwaysor any components. work platformsbefore using. Always Following is a listof basicprecautions that face machinewhen usingsteps,ladders shouldalwaysbe observed. and walkways.

Whenit is not possible to use the designed access system, provide Read and understand all warning plates 1. ladders, scaffolds, or workplatforms to and decalson the machinebeforeoperatperformsaferepairoperations. ing,lubricating or repairing thisproduct. usehoistwhenlift9. To avoidbackinjury, 2. Alwayswear protective glassesand proing componentswhich weigh 23 kg (50 tectiveshoes when workingaroundmaIbs)or more.Makesureall chains, hooks chines.In particular, wear protective slings, etc., are in good condition and are glasseswhenpounding on any partof the in the correct capacity.

Be sure hooks are machineor its attachments with a hampositioned correctly.

Lifting eyes are not mer or sledge.Use weldersgloves,hood/ to be side loaded during a lifting operation. goggles, apronandotherprotective clothing appropriate to the weldingjobbeing 10. To avoidburns,be alertfor hotpartson performed.

Do not wearloose-fitting or machineswhich have just been stopped tornclothing.

Removeallringsfromfinandhot fluidsin lines,tubes,andcompartments. gers when workingon machinery. batteryand discharge any ca3. Disconnect pacitorsbeforestartingto work on machine.Hang "Do Not Operate"tag in the Operator’sCompartment. makeallrepairs withthema4. If possible, chineparkedon a level,hard surface.

Blockmachineso it does not roll while workingon or undermachine.

11. Be carefulwhen removingcoverplates.

Gradually takeoff the lasttwo boltsor nutslocated at opposite endsof thecover or deviceand prycoverlooseto relieve anyspringor otherpressure, beforeremovingthe last two boltsor nuts completely.

whenremoving filler caps,breath12. Be careful ers and plugson the machine.Holdarag 5. Do notworkon anymachine thatis supported overthecapor plugto prevent beingsprayed onlyby liftjacksor a hoist. or splashedby liquidsunderpressure.

Alwaysuse blocksor jackstandsto supThedangeris evengreaterif the machine port the machinebeforeperforming any hasjustbeenstoppedbecausefluidscan disassembly. behot.

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WARNING 13. Alwaysusetoolsthatare in goodcondition and be sure you understand how to use them beforeperforming any service work. allfasteners withsamepartnum14. Reinstall ber.Do notusea lesser quality fastener if replacements are necessary.

21. Do not operatea machineif any rotating part is damagedor contactsany other part during operation.Any high speed rotatingcomponentthat has been damagedor altered shouldbe checked forbalancebeforereusing. machines, be carefulwhen 22. On track-type servicing or separating tracks.

Chipscan fly when removingor installing a track pin. Wearsafetyglasses.Trackcan unroll very quicklywhen separated.

Keep away from front and rear of machine.

The machinecan move unexpectedly when both tracks are disengagedfrom the sprockets.

Blockthemachine to prevent it from moving.

15. Repairswhichrequireweldingshouldbe performed onlywiththebenefit of theappropriatereferenceinformation and by personneladequately trainedand knowledgeablein weldingprocedures.Make referenceto "Techniques of Structural RepairCourse".Determine type of metal beingweldedand selectcorrectwelding procedure andelectrodes, rodsor wireto providea weldmetalstrength equivalent 23. Cautionshouldbe usedto avoidbreathing at leastto thatof parent metal. dust that may be generatedwhen handlingcomponents containing asbestos fi16. Do not damagewiringduringremovalopbers.If thisdustis inhaled, it can be erations.

Reinstall thewiring so it is not hazardous to your health.Components in damagednor willit be damagedin operaKOBELCOproductsthat may containastion by contacting sharpcorners,or by bestosfibersare brakepads,brakeband rubbingagainstsomeobjector hot surand liningassemblies, clutchplatesand face.Do notconnect wiringto a lineconsome gaskets.

The asbestos usedin these taining fluid. components is usuallyboundin a resinor 17.Be sureallprotective devices including guards sealedin some way. Normalhandlingis and shieldsare properlyinstalledand not hazardousas long as airbornedust functioning correctly before starting a rewhichcontains asbestos is not generated. pair.Iraguardor shieldmustbe removed to perform the repairwork,useextracauIf dustwhichmaycontain asbestos is present, tion. there are several common sense guidelines that 18. Always useliftarmsupports to keepbucket should be followed. armsraisedand buckettilteddownwhen maintenance or repairwork is performed a. Neveruse compressed air for cleaning. whichrequires thebucket in theraised pob. Avoidbrushing or grindingof asbestos sition. containing materials. c. For cleanup, use wetmethodsor a vacand hy19. Looseor damagedfuel,lubricant uum equippedwith a high efficiency drauliclines,tubesand hosescan cause fires.Do notbendor strike highpressure particulate air(HEPA)filter. linesor install oneswhichhavebeenbent d. Use exhaustventilation on permanent or damaged.Inspect lines, tubes and machining jobs. e. Wearan approved respirator if thereis hosescarefully.

Do not checkfor leaks with your hands.Pin hole (verysmall) no otherwayto control thedust. leakscan resultin a highvelocityoil f. Complywith applicable rulesand regulations fortheworkplace. streamthatwillbe invisible closeto the hose.Thisoilcan penetrate the skinand g. Followenvironmental rulesand regulacausepersonalinjury.Use cardboardor tionsfordisposal of asbestos. paperto locate pinholeleaks. h. Avoidareaswhere asbestosparticles maybe in theair.

20. Tighten connections to thecorrect torque.

Make sure thatall heatshields,clamps and guards are installedcorrectlyto avoidexcessive heat,vibration or rubbing againstother partsduring operation.

Shields thatprotect against oilsprayonto hotexhaust components in eventof a line, tubeor sealfailure mustbe installed correctly.

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CONTENTS IMPORTANT

TITLEI CHAPTER INFORMATION ..........................................

0-1

FOREWORD .....................................................................

0-2

FORORDERING ...............................................................

0-3 SAFETY SAFETY .........................................................................

0-4 CHAPTER 1. SAFETY SAFETY PRECAUTIONS BEFOREOPERATION ........................

1-1 PRECAUTIONS DURING OPERATION ........................

1-5 PRECAUTIONS DURING INSPECTIONS AND MAINTENANCE ..................

1-9 PRECAUTIONS WHEN HANDLING BATTERIES.........1-12 WARNING LABEL HANDLING OF WARNING LABELS ...........................

1-13 WARNING LABEL POSITION (~CANOPY ANDCABSPEC.~ ........................

1-13

OPERATING EQUIPMENT

OPERATION

CHAPTER 2. OPERATING EQUIPMENT MAINTENANCE LOCATION OFCOMPONENTS ..........................................

2-1 MONITORPANEL(~GAUGECLUSTER~ .....................

2-3 ARRANGEMENT AND OPERATION OF SWITCHES ...

2-6 ARRANGEMENT AND OPERATION OF LEVERS ...... 2-8 FUSE BOX...............................................................

2-11 FUSIBLE LINK .........................................................

2-12TRANSPORTATION STORAGE POSITION OF TOOLS..............................

2-12 STORAGEPOSITION OF GREASEGUN .....................

2-12 CAB(~OPTION~ .........................................................

2-13 OPENING/CLOSING THECOVER..............................

2-15 SPECIFICATIONS CHAPTER 3. OPERATION OPERATION INSPECTIONBEFORE STARTINGTHE ENGINE .........3-1 OPTIONAL CHECKBEFORE OPERATION ....................................

3-2 DEVICE HANDLING OF THE NEW MACHINE........................

3-4 ADJUSTMENT BEFORE STARTING THE ENGINE ...... 3-4 STARTINGAND STOPPINGTHE ENGINE..................

3-4 WARM-UP RUNNING ................................................

3-9 OPERATION PROCEDURE ..........................................

3-10 INDEX OPERATING METHODS FOR IMPROVING EFFICIENCY ..................

3-15 PROHIBITED OPERATIONS .......................................

3-18 PARKING THEMACHINE ..........................................

3-21 PRECAUTIONS AFTEROPERATION ...........................

3-21 CAUTION ON USINGRUBBERSHOES........................

3-22 INSPECTING THERUBBER SHOE..............................

3-25 REMOVING RUBBER SHOES....................................

3-26

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INSTALLING RUBBER SHOES....................................

3-26 HANDLING UNDER SPECIAL CONDITIONS ...............3-27 PRECAUTIONS WHEN STORING THE MACHINE FOR A LONG PERIOD ...... 3-28 CHAPTER 4. MAINTENANCE MAINTENANCE PERIODICAL INSPECTION AND MAINTENANCE ...... 4-1 PRECAUTIONS ON MAINTENANCE ...........................

4-1 RECOMMENDED OIL VISCOSITY AND ITS CAPACITY(SK25SR) ........................

4-3 RECOMMENDED OIL VISCOSITY AND ITS CAPACITY (SK3OSR)........................

4-4 RECOMMENDED OIL VISCOSITY AND ITS CAPACITY (SK35SR)........................

4-5 EXPENDABLEPARTS (SK25SR¯ SK30SR and SK35SR)...... 4-6 FOLLOW THE PRECAUTIONS BELOW WHEN MOUNTING HOSES, PIPING AND JOINTS ......... 4-7 RELEASING THE INTERNAL PRESSURE OF HYDRAULIC OIL SYSTEM ......... 4-8 PRESSURIZING THE HYDRAULIC OIL TANK ............4-9 RELEASINGAIR IN THE FUEL SYSTEM ..................

4-10 LUBRICATION AND MAINTENANCE INTERVALS ...... 4-11 WHENREQUIRED ......................................................

4-14 8-HOUR (DAILY) INSPECTION AND MAINTENANCE ......... 4-22 50-HOUR (WEEKLY) INSPECTION AND MAI NTENANCE.........4-25 250-HOUR (3-MONTH) INSPECTION AND MAI NTENANCE.........4-29 500-HOUR (6-MONTH) INSPECTION AND MAINTENANCE ......... 4-33 1,000-HOUR (12-MONTH) INSPECTION AND MAI NTENANCE.........4-35 2,000-HOUR INSPECTION AND MAINTENANCE ......... 4-40 CHAPTER 5. TRANSPORTATION TRANSPORTATION WHEN PREPARING TRANSPOTATION PLANS ............ 5-1 CHAPTER 6. SPECIFICATIONS SPECIFICATIONS MAINSPECIFICATIONS .............................................

6-1 EXTERNAL DIMENSIONS (SK25SRoCANOPYSPEC.) ... 6-2 EXTERNAL DIMENSIONS (SK25SR-CAB SPEC.).........6-2 EXTERNAL DIMENSIONS (SK30SR*CANOPYSPEC.) ... 6-3 EXTERNAL DIMENSIONS (SK3OSR,CAB SPEC.).........6-3 EXTERNAL DIMENSIONS (SK35SR,CANOPYSPEC.) ... 6-4 EXTERNAL DIMENSIONS (SK35SR*CAB SPEC.).........6-4 WORKING RANGE (SK25SR*CANOPY SPEC.) ............ 6-5

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6-6 WORKINGRANGE (SK25SRoCABSPEC.) ..................

WORKING RANGE (SK3OSRoCANOPY SPEC.) ............ 6-7 6-8 WORKINGRANGE (SK3OSRoCABSPEC.) ..................

WORKING RANGE (SK35SRoCANOPY SPEC.) ............ 6-9 6-10 WORKING RANGE (SK35SRoCABSPEC.) ..................

6-11 SHOETYPES(SK25SR ¯ SK3OSRandSK35SR/ ...................

6-11 BUCKET TYPES(SK25SR) .......................................

6-11 BUCKETTYPES(SK30SR) .......................................

6-11 BUCKET TYPES(SK35SR) .......................................

6-12 OVERALLSPECIFICATIONS OF BOOM .....................

OVERALL SPECIFICATIONS OF ARM AND BUCKET...............

6-12 OVERALL SPECIFICATIONS OF ARM........................

6-12 BUCKET ..................

OVERALL SPECIFICATIONS OF 6-12 OVERALL SPECIFICATIONS OF DOZERBLADE.............

6-12 CHAPTER

7. OPTIONAL

DEVICE

SWITCHING

THE ROTARY MULTI CONTROLVALVE..................

7-1 AoB MODE SHIFTER SWITCHING PROCEDURE ......... 7-3 CHAPTER 8.INDEX......................................................

8-1

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NOTES

CHAPTER

1. SAFETY

ISAFETY 1 Manyfailures thatoccurduringmachineoperation or servicing resultfromneglecting fundamentalprecautions.

The following precautions aregivento preventsuchfailures, but theyare onlya partof whatyou mustfollow.Readallsafetyprecautions thoroughly beforeoperating the machine. ~-PRECAUTIONS BEFORE OPERATION I ¯ OBSERVE SAFETY RULES Follow allsafetyrules, precautions, andoperatingprocedures.

If thereare otherpersonnel and flag-men workingin the area,havethemobservethe specified signs.

¯ WEAR PROTECTIVE CLOTHING Wearwell-fitting safety shoes, hardhat,and workingclothes,and put on protective glasses, masks,and gloves, whennecessary.

READ THE OPERATORS MANUAL THOROUGHLY Beforeoperating themachine, readthisoperatorsmanualthoroughly in orderto use themachine effectively andsafely.

Furthermore, keepthisoperators manualat theoperator seatat alltimesso alloperatorshandling thisproductcan readit over and again.

Keepthis manualin the specifiedstorage area,behind theseat.

HOW TO HANDLE LIFE HAMMER (CAB SPEC. ONLY) A lifehammeris provided on theleftsideof cab.

In caseof emergency, takethelifehammer, breakthe cab glass,and escapefrom the cab.

In addition, thelifehammer is equipped with a cutter on thelever sideto cuttheseatbelt, etc.

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®

z /

/ LifeHammer

---’-411 ----’a In ’----’4 ~n ~nm

SAFETY OPERATION ¯ USE THE HANDRAILS AND STEP When gettingon and off the machine,alwaysmaintain threepoint-contact by using thehandrails andstep.

Inspectand clean handrails,step, and mounting parts.Removeslippery materials, suchas lubricants.

¯ AVOID HANDLING AT HIGH TEMPERATURES Immediately afterthe machineis operated, the temperature and pressure of the engine coolant, engineoil,and hydraulic oil are veryhigh.Burnsmayresultif capsareremoved,or oil,water,or filters arechanged undertheseconditions.

Waituntilthe temperature goes down,beforefollowing the properprocedures.

¯ USE THE PROPER OPTIONAL ATTACHMENT Beforeinstalling or usingan optional attachment, thoroughly readthe optionsmanual.

Do notuse attachments whicharenot specified by KOBELCO.This may cause accidents or damage, and deteriorate the machine’s functions andlifespan.

KOBELCOis not liablefor injuries, accidents,or machinemalfunctions arisingfrom use of improper attachments. ¯ PREVENT FIRES Removeall combustible materials, such as wood chips,dead leaves,and wastepaper, because theymaybe thecauseof fires.

Checkthefuel,oil,andhydraulic oilsystems for leakage.Repairand removeany leaked oilas necessary.

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!

SAFETY

OPERATION

¯ DO NOT MODIFY WITHOUT PERMISSION KOBELCOis not liablefor any damage or injuryarisingfrom modification without prior permission.Consultyour KOBELCO distributor beforemodifying themachine.

¯ PREPARE FOR EMERGENCIES Havea fireextinguisher and firstaid kit readyforemergencies suchas firesor accidents.

Learnhowto usethefireextinguisher.

Designate a placeto keepthefirstaidkit.

Keep emergencynumbers handy, and decidewhichagencies shouldbe contacted and the meansof contact.

¯ ENSURE SAFETY AT THE WORKSlTE Beforeoperatingthe machine,surveyand recordthegeographical andgeological featuresof theworksite completely to prevent the machinefrom fallingor the soil from caving in.

¯ PERFORM A PREOPERATION INSPECTION Perform inspections beforestarting the machine.If any problems are discovered, repairthemimmediately.

Alwayskeepthe windshield, workinglamps, andmirrorsclean.

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SAFETY LOCK BEFORE LEAVING THE MACHINE Beforeleavingtheoperator’s seat,set the safety leverto thelockposition.

If thelever is notsetto thelockposition andis touched accidentally, the machinemay move suddenly and a seriousinjury may result.

Beforeleaving themachine, lowerthebucket to theground, lockthesafety lever, stopthe engine, andlockandkeepallkeys.

Lock

C Release

NOTE SIGNS AND SIGNALS Installsignson softshoulders andground areas.Havea flag-man directthe operation if necessary.

The operatorshouldnote marksand follow signs from the flag-man.All personnel should know the meaning of the signs, marks, and signals.Only one flag-man should givethesignsandsignals.

¯ KEEP FIRE AWAY FROM FUEL AND OIL Oil,antifreeze, andespecially fuelarehighly flammable.

Neverusefirenearthe machine.

Stop the enginebeforereplenishing with fuel.Securely tighten allfuelandoilcaps.

Keepfuelandoil in thedesignated storage areas.

¯ USE CAUTION NEAR NOISE If noiseis highduringoperation, hearing loss may result.Ear coversor ear plugs shouldbe usedif the operator willbe exposedto highnoiselevels fora longperiod of time.

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OPERATION

SAFETY OPERATION ~ PRECAUTIONS DURING OPERATION I ¯ START THE ENGINE PROPERLY Sitin theoperator’s seatwhenstarting the engine.

Soundthehornbeforestarting theengineas a warningto stayaway from the machine.

Do notshort-circuit thestartercircuitor batteryto start the machine.This may causea serious accident or damagetheelectrical system.

¯ KEEP OTHER PERSONNEL AWAY FROM THE MACHINE The operator shouldneverallowotherpersonnelto geton themachine.

Serious injury canresult.

GIVE A SIGNAL BEFORE STARTING THE ENGINE Beforestarting theengine,confirmthatno otherpersonis in theareaof themachine; then soundthe horn as a warningto stay away from the machine.

Hornswitch If a warningtagis attached on thecontrol lever, do notstarttheengine.

¯ CHECK THE DIRECTION OF THE TRACK FRAME BEFORE OPERATING THE TRAVEL LEVERS Beforeoperating thetravellevers,confirm whichdirection thetracksandtravelmotors arefacing.

Condition wherethedriving direction is reversed

> ....

1-5

SAFETY OPERATION ¯ FOLLOW THE PRECAUTIONS BELOW WHEN SLEWING OR TRAVELING THE MACHINE Keep other personnelaway from the machineslewingarea.Beforeoperatingthe machine,confirmthat no personnelor obstructionsare around the machine,and soundthe hornor giveasignalas a warning to stay away fromthe machine.

Havea flag-man directoperations in areas whicharedangerous or havepoorvisibility.

¯ CARE TO BE EXERCISED WHEN WORKING ON A SLOPE Machineoperation on a slopeinvolves danger.Stepdownspeed,usingcareso themachinedoesnotturnoverandslidesideways.

¯ FOLLOW THE PRECAUTIONS BELOW WHEN OPERATING THE MACHINE ON FROZEN OR SNOW-COVERED GROUND Reducethespeed,anddo notsuddenly start, stop,or turnthemachine whileon frozenor snow-coveredground. The machine may sideslip on eventhe slightest slopeif the groundis frozenor coveredwithsnow.

Snow on shouldersor snowdriftscan be deeperthanexpected, andshoulders and installedequipmentmay becomeburied and invisible undersnow.Thefrozengroundwill becomesofteras the temperaturerises.

Take due carewhendrivingthe machine. ¯ USE THE PRECAUTIONS BELOW WHEN TRAVELING Position theattachment as shownin thefigure on the right.The distance betweenthe attachment and groundshouldbe about3040 cm(12-16in) Move the machineat low speedsand do not changedirections suddenly on roughground.

Do not driveoverobstacles.

If an obstacle must be drivenover,keep the attachment near the groundand movethe machineat a lowspeed.

1-6

SAFETY

OPERATION

¯ USE CAUTION IN DANGEROUS OPERATIONS The machinemay become unbalancedat a shoulder or an edgeof a precipice.

Position thecrawlerat rightanglesto theshoulder withthetravel motorat therearso thatthe machine can be retractedquicklyin an emergency.

Sincetheshoulder mayeasilycrumble (especiallyon filled-in groundor aftera rainstorm),make sure that the machineis on secure, stableground.

Do notdigtooclosely to the machine. ¯ PRECAUTIONS USED IN LIFTING Sincethismachineis an excavator, please use extremecautionwhen handlingheavy loads.

Useonlyapproved slings andshackles (clevises).

Never lifta loadusing thebucket teeth.

¯ USE THE PRECAUTIONS BELOW WHEN ON A SLOPE The machinemay become unbalancedwhen beingoperatedon a slope.Take due care whenoperatingthe machine.

Workup and down slopes,ratherthan side ways,whenever possible.

Do not turn the machineto the downward sideof theslopewhenthe bucketis filled with material.If turningmovementsare necessary, firstbuilda leveloperating area forthe machine. ¯ FOLLOW THE PRECAUTIONS BELOW WHEN UNDER ELECTRICAL POWER LINES If the machineor attachmentshouldcome intocontact witha electrical powerline,seriousinjury or deathresulting fromelectric shockmay occur.Keep sufficient distance fromthe linewhileoperating themachine.

The minimumdistancestandardsare given below.

Linevoltaqe V Minimum distance m /FT/ 0 - 50,000 3.0(10)ormore 4.5(15)ormore 50,000 - 200,000 200,000 - 350,000 6.0(20)ormore 350,000 - 500,000 7.5(25)ormore 500,000 - 750,000 10.5(35)or more 13.5(45)or more 750,000- Over 1-7

X

O

SAFETY

OPERATION

¯ USE CAUTION WHEN DIGGING NEAR BURIED UTILITY LINES If thereis possibility thata wateror gas pipemaybe buried in thesiteto be dug,first contactthe jurisdictional managingcompany to confirmthe exactlocationof the buried lines.Then,startdigging carefully.

¯ USE CAUTION WHEN PARKING Parkthemachine on levelground.

If themachine unavoidablymust be parked on a slope,applythe blockto the crawlerand lowerthebucketto theground.

Blockthetracksdownslope.

When parkingon a road,park the machine so as notto obstruct traffic.

Warnpassengersand othervehicles by placingwarning signs, suchas flags, pylons, or lamps.

¯ CAREFULLY OPERATE THE ATTACHMENT When operatingthe machinein areaswhere the heightis limited,suchas in tunnels, underbridges, and underelectric wires,be careful notto striketheattachment against anything.

¯ STABILIZE REMOVED ATTACHMENTS Afterremovingan attachment, placeit so thatitwillnotfallover.

1-8

SAFETY (PRECAUTIONS

DURING INSPECTIONS

OPERATION

AND MAINTENANCE

¯ INDICATEINSPECTIONS/MAINTENANCE WITH A WARNING TAG If someoneshouldstartthe engineor move the leverwhilean inspection or maintenance is beingcarried outon themachine, a serious injurymay result.Attacha warningtag whichstates"Donotoperate" to thecontrol lever.Displaywarningsignsaroundthe machine, if necessary.

¯ USE THE PROPER TOOLS Never use damagedor deformedtools. Do notusetoolswhichweremadeforotherpurposes.Useonlythepropertools.

¯ KEEP THE MACHINE CLEAN Leakedoil and greasemay causean accident.Alwayskeepthe machineclean.

If waterleaksintotheelectrical system, the machine may break down or operate improperly.

Do not washthe sensors, connectors,or operator’s seatwithwateror steam.

¯ STOP THE ENGINE DURING INSPECTIONS AND SERVICING If an inspection or servicing is carried out whiletheengineis running, handsor clothingmaybecomecaughtin thefan,pulley, or fanbelt.Alwaysstoptheenginebeforeinspecting or servicing theengine.

1-9

Block

)~

SAFETY

OPERATION

¯ FOLLOW THE PRECAUTIONS BELOW WHEN FILLING WITH FUEL OR OIL Stoptheengine andfillwithfuelor oilin a wellventilated place.

Spiltoilcanmakethe floorslippery and causean accident.

Clean up spiltoilimmediately.

Afteraddingoil, tightenthe fueland oilcapsfirmly.Never usefuelto cleanthemachine.

¯ USE SUPPORTS WHEN JACKING UP THE MACHINE If supports arenotusedwhenjacking up the machine, an accident may result.

Whenyouliftup themachineto inspect the lowerframeassembly, theanglebetweenthe boom and arm should be 90-110°. Lower thebottomfaceof thebucketto the ground and lift up the machine;then supportthe machinewitha safetysupport or block.

¯ BE CAREFUL WITH HIGH-PRESSURE OIL Normally, pressure existsin everyhydraulic circuit.

Neverreplenish or dispose of oil,or inspect or service themachine, before releasing the internal pressure.

Evenleakageof high-pressure oil froma smallholecan be dangerous if it comesintocontact withyour skinor eyes.Always wearprotective glasses and gloves,andperforminspections witha plateor cardboardheldagainst areasleakingoil.

¯ USE CAUTION WHEN SERVICING IF THE MACHINE TEMPERATURE OR PRESSURE IS HIGH Immediately afterthe machineis stopped, thetemperature and pressure of the engine coolantand oil can be extremelyhigh.If youremovethecapor changetheoil,water, or filter undertheseconditions, youcanget burned.Followthe inspection or servicing procedures afterthe temperature has gone down.

1 -10

SAFETY ¯

BE CAREFUL WITH HIGH-PRESSURE GREASE WHEN ADJUSTING THE TRACK TENSION Becausehighpressureexistsin the grease cylinder, greasewillblowoutif thegrease nippleis loosened suddenly.

/

/

Do not loosenthegreasenipplesuddenly or turnit morethanonerevolution.

Keep your face,hands,and legsaway from thedirection in whichthegrease nipple is attached.

USE THE SPECIFIED LIGHTING Wheninspecting thefuel,oil,coolant, or battery,use explosion-proof lightingequipment.Otherlighting equipment can ignitea fireandcausean explosion.

¯ USE CAUTION WHEN WORKING WITH THE ELECTRICAL SYSTEM Beforerepairingthe electrical systemor performing electric welding, disconnect the negative (~ terminal of thebattery.

If the negative (~)terminal is notdisconnected, the electrical systemmay becomedamaged.

When removing,remove thenegative terminal first.

FOLLOW PROPER PROCEDURES WHEN DISPOSING OF LIQUID WASTE Followthe specified regulations whendisposing ofoil,fuel, coolant, hydraulic oil,solvents,filters,batteries, or othertoxic substances.

Use a containerwhen extractingliquid wastefrom the machine.

Neverdispose of liquidwasteon theground, or in rivers, lakes, or thesea;it candestroy the environment.

1 -11

OPERATION

SAFETY

OPERATION

( PRECAUTIONS WHEN HANDLING BATTERIES ¯ PREVENT BURNS FROM BATTERY FLUID Weara long-sleeve shirt, protective glasses, and gloveswhenworkingwithbatteries.

If battery fluid(whichhasdiluted sulfuric acid)comesintocontact withyourclothing, skinor eyes,youcangetburned or loseyour eyesight.

Immediately rinsewithpurewater andconsult a physician.

¯ PREVENT BATTERIES FROM EXPLODING Explosive hydrogen gasis generated in batteries.

Keepfireand openflamesawayfrom batteries.

Tightenbatterycapssecurely, and connect theterminals firmly.

Open the coverso that batteries are well ventilated whenbeingcharged.

¯ FOLLOW THE PROCEDURES BELOW WHEN STARTING THE ENGINE WITH A BOOSTER CABLE Wear protective glasseswhen startingthe enginewitha booster cable.

Whenusinganothervehicle to startthe machine,make sure that the normalmachine doesnot makecontactwiththe malfunctioningone.

When removing,removethe negativeO terminalfirst;and whenconnecting, connect thepositive (~)terminal first.

Make sure that no toolsmake contactbetweenthepositive (~)terminal andmachine body.If thisshouldhappen, sparkscouldbe generated, producing a dangerous situation.

Nevermistakenlyconnectthe boostercable’spositive O terminal withthenegative Q. The final connectionis to the upper frame.Seepage3-6forthe starting procedurewhenusinga boostercable.

1 =12

Whenconnecting, connect the positive terminal first.

When removing, removethe negative terminal first.

SAFETY

WARNING

OPERATION

LABELI

Labels areaffixed in locations whichrequire special attention in orderto prevent possible accidents.

Thoroughly understand the reasonfor theirplacement and the contents. ( HANDLING OF WARNING LABELS ¯ Confirm whether labels canbe easily read.

If wordsor illustrations are illegible, cleanoffor replace thelabels. ° Usea cloth,water, anddetergent to clean thelabels.Neveruseorganicsolvents or gasoline.

¯ If labels aredamaged, missing or illegible, replacethemwith new ones.Contactyour KOBELCOdistributor for new labels.

(WARNING LABEL POSITION (CANOPY AND CAB SPEC.)) (!) Do notenterthemachineslewingarea

(~)Checking thehydraulic oillevel

OFT HE HYDRAULIC OIL (HALFOFTHE LEVELGAUGE)

PY20T01056P1

Attached to the hood

@

Lackofhydraulic oilwillcause damage to mainhydraulic pump.

Before starting operation: ¯ Place machine onlevel ground. ¯ Fully retract armandbucket cylinders andlowerboomto ground. ¯ Checkhydraulic oillevelgaugefor proper level.

Y N20T01014P1

Attached to the hydraulic tankcover

® (~)Use cautionwhen openingthe hydraulic oiltankcap (~) Use cautionwhenopeningthehood

WARN

NG

CAUTION Rotating engine fan,hotengine partsanddrivebeltcancause severe injury.

Pressurized hotoilcancause burns.

Donotopenengine cover orservice engine withengine running.

Depress stemto release Hydraulic Tankpressure.

Y N20T01239P1

YN20T01012P1

Attached to the hydraulic tankcover

Attached to the hood 1 -13

SAFETY

OPERATION ® Use cautionwithhigh-tension lines

(~)Do notcontact thebucketwiththe cab CAUTION

~, DANGER Contact withelectrical power lines will result insevere injury ordeath.

Bucket cancontact and damage cab when machine equipped withsome attachments.

INTERFERE Check clearance between bucket and cabbefore operation.

Exercise carewhen operating a bucket nearcab.

Keepmachineandattachment a safedistance fromelectrical powerlinesas perfollowing instruction.

VOLTAGE (Volts) SAFETY 50K or LESS 50K to 200K 200K to 350K 350K to 500K 500K to 750K 750K to OVER

YN20T01013P1

Attached to therightsideof thecover

DISTANCE 3.0M (10FT) 4.5M (15FT) 6.0M (20FT) 7.5M (25FT) 10.5M(35FT) 13.5M(45FT) ¥ N 20T01006P 1

Attached to theleftsideof thecover (~ Usecautionwith thehydraulic strainer

~

®

When removing oilfrom filler opening carefully placedraining apparatus into hydraulic tank to avoiddamage to thehydraulic strainer.

PMZZT010ZOP1

Attached to thehydraulic tank ®

Use cautionwhenadjusting crawlertension WARNING

® Generalprecautions duringoperation CAUTION 1. PLEASE READ THOROUGHLY THE OPERATOR’S MANUAL BEFORE OPERATING OR PERFORMING MAINTENANCE ON THIS MACHINE. 2. ENSURE THE SAFETY LEVER IS ACTIVATED AND BUCKET IS ON THE GROUND BEFORE STARTING OR LEAVING THE MACHINE. 3. STARTING INSPECTION AND PERIODIC INSPECTION SHOULD BE FOLLOWED ACCORDING TO THE OPERATOR’S MANUAL. 4. BEFORE STARTING OPERATION, SOUND HORN AND BE SURE BYSTANDERS ARE CLEAR OF MACHINE. 5. PARK ON A LEVEL SURFACE AND LOWER THE BUCKET TO THE GROUND. IF NECESSARY TO PARK ON A SLOPE, CHOCK THE CRAWLERS. 6. DO NOT EXERT ABNORMAL SHOCK LOADS OR TORSIONAL FORCES ON THE ATTACHMENTS SUCH AS. -- LEVELING OR BACKFILLING WHILE SWINGING. -- DROPPING THE BUCKET TO BREAK CONCRETE OR STONE. -- DOZING WITH THE BUCKET INSTEAD OF THE DOZER BLADE.

PY20T01025P1

Attached to thecontrol stand 1 -14

Extreme highpressure in track adjustment cylinder cancause personal injury whenadjusting crawler tension.

Loosen grease nipple withcare torelieve pressure gradually.

2432T6110

Attached to thecontrolstand

SAFETY (~ Use cautionbefore operating control lever

OPERATION

beforeexiting ® Usecaution theoperators seat WARNING

Operating thismachine before Machine maymovesuddenly and checking thefunction of each cause serious personal injury if controllevercan causethe a control leveris accidentally machine to moveunexpectedly, touched.

Besurethesafety lever whichcan resultin serious is disengaged andin thelocked personalinjury.Make sure position before exiting thecab. youcheck andknowthefunction PY20T01065P1 of eachcontrol leverbefore Attached to theseatstand operating, bybriefly activating control levers. /Duct PY20T01064P1 Attached to theseatstand

®

®

VIEW

B 1 (~Usecautionwhenhandlingthe battery

(~)Prevent battery explosions

PREVENT BATTERY EXPLOSION ¯ Batteries givesoffhydrogen gases thatcanexplode andcause personal injury. ¯ Keep sparks,open flamesand cigarettes awayfrombatteries. ¯ Keepmetallic articles awayfrom batteries. ¯ Keepallventilation capstightly secured. ¯ Nevercheck charge by placing metal articles across battery terminals. ¯ Leavebattery boxopento improve ventilation whencharging.

YN20T01001P1 Attached to the duct (~)Use caution whenchangethemulticontrollever(OPTION)

AVOID ACID BURNS ¯ Electrolyte isan acidandcancause injury orblindness ifitcontacts skin or eyes. ¯ Wear eye protectionandprotective clothing when handling orservicingbatteries. ¯ Ifelectrolyte contacts skinoreyes, flush affected areas immediately with clean water and seekmedical attentionimmediately.

YN20T01017P1 Attachedto the duct

STOP THE ENGINE WITHOUT FAIL AT TIME OF CHANGEOVER Y N 20T01214P 1 Attached to themulticontrol valvecover 1-15

SAFETY

OPERATION

.(~ Usecautionwhenhandling the boostercable ~) Use cautionwhenhandling the battery DANGER EXPLOSIVE GASES Improper booster cableconnections cancause anexplosion resulting inpersonal injury.

Cigarettes, flames or sparks could cause battery to explode. Alway= shield eyes and face from battery. Do not charge or use booster cables or adjust post connectionswithout proper instructionand training,

KEEP VENT CAPS TIGHT AND LEVEL ~:~ POISON CAUSES SEVERE BURNS

contains sulfuric acid.

Avoid contact with skin, eyes orclothing.

In

Connect booster cables using following procedure.

1 . Connect booster cable to positive (~ battery terminal ofdischarged battery.

Connect other endofbooster cable topositive battery terminal ofnormal battery. otherbooster 2. Connect cable to negative C)battery terminal of discharged battery.Connect otherendof booster cable toupper frame of troubled machine.

Start engine and remove 3. booster cablesin reverse order.

event of accident flush with water and call a physicianimmediately.

KEEP OUT OF REACH OF CHILDREN

e ~iO INCONNECIING I

A BOOSTER CABLE (RED) OI SC~IARGED BkTTERYI II I

lie UPP[RFRAW[OF A I,(BLACK) " TROUBLED WACHJNE

PY20T01069P1

Attached to thebattery

regarding lifting (~)Prohibition of wholemachine ~, DANGER Do not usecounterweight lifting eyes toliftwhole machine.

Lifting eyescanfailunder thisloadresulting in personal injury.

Referoperators manual for proper wayoflifting machine.

Y N20T01015P1

Y N20T01221P1

Attached to the counterweight (SK35SR) Attached to thebracket (SK25SR,SK30SR)

Attached to the duct

Duct

® Bracket

VIEW E

@ VIEW C (SK25SR,SK30SR) I-1

rl

Battery VIEW F

Counterweight

@ VIEW D(SK35SR) 1 -16

SAFETY Use cautionwhenopening theenginecover

OPERATION

(~ Stopthe enginebefore inspecting andservicing WARNING

NOTICE

t,,.

Rotating partscancause personal injury.

Keep away fromfan and beltwhenengine is running.

Stopengine before servicing,

Cautionof open/close covers¯ ¯Alwaysstop the enginewhenopeningthe covers. ¯Whenopeningthe covers,openengine guard(~) thenopenradiator cover ¯Whenclosingthe cover,securethe 2 latches of radiator cover (~)thenclose theengineguard(~) PM22T01022PI

Y N 20T01009P 1

Attached to the bracket

Attached to thebracket Hinge

° O

VIEW H

VIEW G

> Bracket G

VIEWI

@ Cautionregardinghigh temperature

@ Use cautionwhen opening the radiator cap

CAUTION Steamof hotcoolant can cause injury orblindness.

Neverloosen or openradiator capwhencoolant is hotand under pressure.

Before opening radiator cap: ¯ Cooldownengine completely. ¯ Cover radiator withcloth rag. ¯ Loosen capslowly torelieve pressure.

Enginemay be hotwhich could cause burns.

Do not touch engine until it coolsdown.

Y N20T01010P1

YN20T01220P1

Attached to the Hinge

Attached to thebracket 1 -17

SAFETY OPERATION Usecaution withhigh-tension lines

~) Do notcontact thebucketwiththecab. ¯ k CAUTION

Contact withelectrical power lines will result insevere injury ordeath.

Bucket cancontact and damage cab when machine equipped withsome attachments.

Check clearance between bucket and cabbefore operation.

Exercise carewhen operating a bucket nearcab.

Keepmachineand attachment a safedistance fromelectrical powerlinesas perfollowing instruction.

VOLTAGE(Volts) 50K or LESS 50K to 200K 200K to 350K 350K to 500K 500K to 750K 750K to OVER

Y N 20T01013P 1

Attached to therightof thecabinterior

SAFETY DISTANCE 3.0M (lOFT) 4.5M (15FT) 6.0M (20FT) 7.5M (25FT) 10.5M(35FT) 13.5M(45FT) Y N 20TO1006P 1

Attached to theleftsideof thecabinterior

Use cautionwhen adjusting crawler tension.

WARN NG

Generalprecautions duringoperation

|. PLEASE READ THOROUGHLY THE OPERATOR’SMANUAL BEFORE OPERATINGOR PERFORMINGMAINTENANCEON THIS MACHINE. 2. ENSURE THE SAFETY LEVER IS ACTIVATEDAND BUCKET IS ON THE GROUND BEFORE STARTING OR LEAVING THE MACHINE. 3. STARTING INSPECTIONAND PERIODIC INSPECTIONSHOULDBE FOLLOWED ACCORDING TO THE OPERATOR’SMANUAL. 4. BEFORE STARTINGOPERATION,SOUND HORN AND BE SURE BYSTANDERSARE CLEAR OF MACHINE. 5. PARK ON A LEVEL SURFACE AND LOWER THE BUCKET TO THE GROUND. IF NECESSARY TO PARKON A SLOPE,CHOCKTHE CRAWLERS. 6. DO NOT EXERT ABNORMAL SHOCK LOADS OR TORSIONAL FORCES ON THE ATTACHMENTS SUCH AS. --LEVELINGOR BACKFILLINGWHILESWINGING. -- DROPPINGTHE BUCKET TO BREAK CONCRETEOR STONE. -- DOZINGWITH THE BUCKETINSTEADOF THE DOZER BLADE. PY20T01025P1

Attached to therightof thecabinterior 1 -18

Extreme highpressure in track adjustment cylinder cancause personal injury whenadjusting crawler tension.

Loosen grease nipple withcare torelieve pressure gradually.

2432T6110

Attached to theleftside of thecabinterior

SAFETY

OPERATION

<~ Frontwindowoperating precautions

~) Use cautionwhen operating hydraulic breaker

Fallingfrontwindowcancause injury.

Always locksecurely in place with lockpinsonbothsides.

ONLY OPERATE BREAKER WITH MACHINE UPPER AND BOOM IN A STRAIGHT, PARALLEL POSITION TO THE CRAWLERS (IDLERSIDE OR SPROCKETSIDE).

DO NOT OPERATE BREAKER WITH MACHINE UPPER OR BOOM IN AN OFFSET OR SWUNG POSITION.

L E20T01019P 1

P Y20T01067P 1

Attachedto the frontwindow

Attached to the rightwindow

® @

~) Frontwindowoperating precautions Pullouttheconnector when lifting thefront window.

Locksecurely whenopening andshutting thefront window.

2432T6108 Attached to the frontwindow

1-19

NOTES

CHAPTER

2. OPERATING

EQUIPMENT

ILOCATION OF COMPONENTS I 31 30 32

25 33 34

35

36

29 2

28

3

23 6

18

22~

20~ 21

7

19

9

10 17 16 15 14 13

(i)FUEL TANK (~)CONTROL VALVE ~) HYDRAULIC TANK (~)INSTRUMENT PANEL (~)RADIATOR (~)SLEWING MOTOR (Z)BATTERY ~) SWIVEL JOINT

@ TRAVELING MOTOR (~)LOWER ROLLER (~)UPPER ROLLER (~ TRACK ADJUSTER @ IDLER @ SWING CYLINDER DOZER BLADE MULTI CONTROL VALVE (OPTION) SOLENOID VALVE DOZER BLADE CYLINDER

~) SLEWING RING ENGINE

@

@ @

PILOT VALVE (~)SAFETY LEVER

HYDRAULIC PUMP RUBBER SHOE

@ @

12

11

~) LEFT OPERATING LEVER ~) BOOM CYLINDER @ BUCKET (~)ARM (~ BUCKET CYLINDER (~)WORKING LIGHT ~) ARM CYLINDER ~) BOOM ~) TRAVEL LEVER (~ OPERATOR SEAT (~ RIGHT OPERATING LEVER ~) CANOPY

2-1

OPERATING

EQUIPMENT

®®®®®®®

® ®

® ® 1@ (~ HORN SWITCH (~)RIGHT OPERATING LEVER ~) SAFETY LEVER (CANOPY SPEC.) (~ BLADE OPERATING LEVER (~)WORKING LIGHT SWITCH (~)DECELERATION SWITCH (OPTION) (~)MONITOR PANEL (GAUGE CLUSTER)

(~)THROTTLE LEVER OPERATOR SEAT

~) SAFETY LEVER (LEFT) (~) LEFT OPERATING LEVER

@

STARTER SWITCH (~ PEDAL LOCK (OPTION) RIGHTOPERATINGLEVERSTAND OPTION PEDAL (OPTION)

@

SEAT ADJUST LEVER ~) LEFT TRAVEL LEVER LEFT OPERATINGLEVER STAND TRAVEL SEED SELECT SWITCH HEATER SWITCH (CAB SPEC.)

@

RIGHT TRAVEL LEVER BOOM SWING OPERATING WIPER SWITCH (CAB SPEC.) PEDAL FUSE BOX AoB MODE SHIFTER (OPTION) (~ PEDAL LOCK (BOOM SWING) Front

¯ Front,rear,rightand leftdirection In thismanual,the front,rear,rightand left directionsare basedon the conditionswhere the travelmotoris at the rearand the operator is facingthe directionin whichthe machine advances(forward).

I~ Right

Travel Rear 2-2

OPERATING EQUIPMENT (MONITOR PANEL (GAUGE CLUSTER)] The monitor displays information sent from sensors positioned at various places on the excavator, makingit possible to monitor the excavator’s operating working conditions.

When the starter switchis set to "ON’,the batterychargeandengineoil pressure lamps onthe monitor light andfuel metertemperature meterstarts operating.

Always payattentionto the metersandthe lampsto preventproblems beforethey happen.

(C)

(B)

l

H

I

(B)

TEMP

(A) Meters (B) Warninng lamps (C) Indicators (D) Select switchs

(A)

¯ METERS(A Group) (~ Coolant tem )erature meter This indicates the temperature of the engine coolant water, and operates whenthe starter switch is turned to the "ON" position.

The temperature is normal in the white range. If the needle enters the red range, let the engineidle until the water cools down and the needle moves back into the white range.

NOTE : When the level lowersto approx.6 (1.6gal) or less, thewarning lamplightsup.

Onlighting upfor 30 seconds or morecontinuously,the buzzersounds.

Addfuel.

(~) Hour meter This indicates the total time the engine has run. Even if the excavator is not moving, the meter continues to count as long as the engine is running.

This indicates the amountof remaining fuel.

F : Full tank is about 35£ (9.2gal) E : Theremainingoil is about 6 £ (1.6gal) 2-3

OPERATING

EQUIPMENT

¯ WARNING LAMPS (B Group)

Whenthestarter switch is turned to ONposition, theengine oilpressure andthebattery charge lamps comes onuntil theengine isstarted, andgooffafter theengine isstarted.

Always payattention tothelamps to prevent problems before theyhappen. (~ Low fuel warninglamp (2~ Coolanttemperature lamp When the starterswitchis turnedto the "ON"position, risesabnormally (above105 a warninglamplightsif the °C or 221°F)a warninglamp fuelislow. lights.

I(~j I If the coolant temperature If thislamplights, please add fuelas soonas possible.

Whenwarninglamp lightsup ¯ The coolanttemperature may rise abnorfor approx.30 secondscontinuously, the mallyif theengine is runwithan excessive warningbuzzersoundsfor only10 seconds. load. (~)Engineoilpressure lamp Thislightswhenthestarter switchis turnedto the "ON" position, andshouldturnoff aftertheengine is started.

If a problem arises in thelubricantoilsystem whiletheengine is running,a warning lamplights.

Theengine mayburnif theexcavator isoperated withthecoolant temperature lampon.

Stopopera1. Theengineis overheating. tionimmediately and lettheenginerun at low speedto let the coolantcool down.

2. Oncethecoolanthas cooleddown,stop theengine.

3. Once the enginehas cooleddown,inspectthe amountof coolant, and check thefanbeltforbreaks or slack.

Theengine mayburnif theexcavator is operated withtheengine oilpressure lampon.

1. Stopthe engineand checkthe quantity of engine oil.(Refer to page3-2.)

2. If thecauseis elsewhere, havetheexcavatorinspectedat KOBELCOdistributor.

® Air cleanerclogginglamp Thislampcomeson if theair cleaner filteris clogged.

If the lamp comeson, cleanor replacethe elementimmediately.

~

~) Batterychargelamp Thislightswhenthe starter switchis turnedto the"ON" position, andshouldturnoff afterthe engineis started.

The lamplightsif a problem arisesin thecharging system whilethe engineis running.

If thishappens, havetheexcavator inspected at KOBELCOdistributor.

2-4

OPERATING

EQUIPMENT

¯ INDICATOR CC Group) Theselampsindicate the working conditions.

¯ SELECT SWITCH (D Group)

(~)High(2nd.)travelspeed Thislightswhen the travel speed is switchedto high (2nd.) speed.

The travel speed selector switchis located on thegrip of theright travel lever.

(~) Deceleration switch(Option) The decelerationfunction worksif this switchis depressed. (without fixingthe throttle lever fixed to "FULL" and adjusting the throttle lever.)

Thedeceleration function is released if thisswitch is pressed onceagain.

The speed automaticallyreturnsto low (1st.) speedwhenthestarter switch is set "OFF".

(~) Glow lamp When the starterswitchis "HEAT"position, the engine oil and batterychargelamp bothturnon. (Referto page 3-5.)

I ~ I moved from the also "eFF" to the Thelamps light when the starterswitchis set to the "START"position.

2-5

I~l

(~ Workinglightswitch If workinglightswitchis pressed, the boom light lights.

To turnthisoff,push the switchonceagain.

iO1

OPERATING

EQUIPMENT

ARRANGEMENT

AND OPERATION

OF SWITCHES

®

I

®

® ®

(:~Starter switch Thisis usedto startor stoptheengine¯

,.

PV-2-28 ,

HEAT .........

In this position,the glow plugis heated.

In thisposition, the power OFF............ circuit is unconnected.

(Engineoff) ON o,ooooo,oooooo) In thisposition, the power circuit isconnected¯ (Engineon) START.........

In thisposition, thestarter motorturnsand the engine is started.

(Theswitch automaticallyreturns to the "ON" position when the handis released.)

Travel speedselect switch ~ This switch is used to changethe travelspeed.

Pressthe switchon the right travel lever to change thetravel speed.

Check the speed using high(2nd.)speedtravel lamp on the monitor.If thisswitchis pressed whentraveling in low (1st.)speed.High(2nd.)speedis selected and the rabbitlamp turnson. If pressed again,thespeedreturns to low(1st.)speed andthe lampturnsoff.

¯-

when NOTE: Low(1st)speedis setautomatically theengine isstarted.

Do notusein places whereroadconditions are poororonslopes. (~ Horn switch

NOTE:The keyis alsoavailable to open/close, thehood,cabandfuelcap.

Pushthe switchto sound thehorn.

Sound thehornbefore starting engine, traveling, slewing or operating theattachments.

2-6

OPERATING EQUIPMENT

®

@

®®¯

Wiper switch (Cab spec.) ~, The wiper of the front windshield operates.

~

Heater switch (Cab spec.)

It is usedto warmthe cab interior and adjustable in two steps to control the warmair flow.

_WASH

WASH (Upper) ......

OFF .....................

ON.....................

WASH ..................

Washer fluid sprays out.

The wiper stops.

The wiper operates.

The wiper operates, while spraying out washerfluid.

OFF............

L ...............

H...............

washer fluid is usedup, donotturn the NOTE" When switchto the "WASH" position. Otherwise the motormaybe broken.

2-7

Stop Weak Strong

¯ Thewarm waterof the engineis usedfor NOTE: warming.The heater can be operated whenthe enginecoolingwateris warm. ¯ Where the heateris not usedin summer, tightenupthe cockat the outletof theengine warmwater.

OPERATING

EQUIPMENT

( ARRANGEMENT AND OPERATION OF LEVERS

®

@®

®

No.

® ® ® @ ® ® ® ®

®

®

(~ Safetylevers Thisleveris usedto locktheoperation of attachment slewingand traveling. ¯ Thefunction of operating leveris locked by meansof hydraulicpressure, so the operatinglevermoveseven the safety leveris locked.But the attachment and slewing do not operate.

In contrast, thetravel leveris locked mechanically, notallowing themovement.

Locking method Pullthesafetylever"A" backward andtowardyourself.

Thisraisesthe leverstand automatically and locksthe operating levers.

Releasing thelock Holdthesafety lever"A"andbringit fully down.

I

Whenpulling upthesafety lever, usecaresoasnotI to touchtheoperating lever.

Unless thesafety lever ispulled uptotheupper end,themachine and theslewing function maywork.

Whenparkingor leavingthe machine, always bringthebucket downto theground.

Thenoperatethelevers andlockthem.

Evenifthesafety lever issettothelockposition, boomslewing anddozerblademotions arenot locked.

2-8

Operating leverand pedals Safety lever Leftandrightoperating levers Boom swingoperatingpedal Pedallockdevice Travel levers Dozerbladeoperating lever Throttle lever Optionpedal

LOCK POSITION Lockon

l~l

~

UNLOCK POSITION _ LockonI~1 ~:~

/

C

/

OPERATING (~ Leftandrightoperating levers Theseleversare for operatingthe boom, arm and bucketand for slewing.

EQUIPMENT

® <=/2

Operating thismachine before checking function of eachcontrol levercancauseunexpected machine movement, whichcanresult in serious personal injury.

Makesureyoucheckandknowthefunction of eachcontrol before operating.

Boom

NOTE: Thehornswitch willbe assembled to the right control lever atfactory.

/----~1

OPERATING LEVER PATTERN (ISO) Leftoperating lever Rightoperating lever Arm extending (~ Boom lowering ® Arm digging ® (~ Boomraising left C~) Slewing (~ Bucketdigging Slewing right @ Bucketdumping ® (~) Boomswingoperating pedal Use thispedalto swingthehoe attachment rightandleft.

(B)

¯ Presson theheelside(A)to swingto the right ° . 55 ¯ Presson thetoeside(B)to swingto the left ° . 85 Cabspecification (max.70° to theleft)

(~ Pedallockdevice Thisis thelockdevicefortheboomswing, optional operating pedal.The lockis released if thepinof thepedalis pushed forward.

2-9

<~1 Front

OPERATING

EQUIPMENT

® Travellevers Use these to move the left and right crawlers forwardand reverse.

The excavator moves forward when the levers are pushedforward,reversewhen the levers are pulledbackward.

Whenthetravel motor is in thefrontofthemachine, thetravel lever mustbeoperated theother way.Before operating thetravel lever, confirm theposition ofthetravel motor.

(A)

~

(A)

(B)

B)

Forward

(A) (~) : Forward (~: Reverse

J

30cm ~ 40cm Dozerbla( Toravel

Reverse

(B) ® Dozerbladeoperatinglever Thisis the leverthatoperates the dozer blade.If the leveris pushedforward, the dozerbladegoesdownand if the leveris pulledtowardyourself,the dozerblade goesup. (~): Dozerbladedown (~ : Dozerbladeup

(c)

(D) Dozerblade

(C)

(Z)Throttle lever It controls theengine speedandoutputs. (~ : Low idling...Thepositionat which theleveris pushed forwardto thefull. ® : Fullthrottle ...Theposition at which thelever is pulled fully towardyourself.

2-10

OPERATING

EQUIPMENT

(~)Optionpedal When optionalattachment otherthan the standard oneis used,thispedalis usedfor operation.

For the handlingof hydraulic breaker, referto theOperator’s Manualin theseparate volume.

FUSE BOX

FuseNo.

Thefusesprotect theelectrical systemfrom excess current.

If operation is notnormal, a fuse may be blown. Replaceblown fuses withthesparefusesas follows.

J

-

Besurethestarter switch isinthe"OFF" position whenreplacing fuses.

Sparefuses NOTE: Whenreplacing a fuse, replace itwithoneof thesamecapacity. ¯ REPLACEMENT

PROCEDURE

1. Removethefusebox cover~. To do this, griptheendsof thecoverwithyourhand, andworkit offin thedirection of front side.

2. To removethefuse,useyourfingers. rein3. Installthenewfuse.Thensecurely stall thecover.

¯ FUSE AMPERAGE AND CIRCUIT ¯ Fusecapacities andnamesof circuits No.

O ® ® @ ® ®

Fuse Circuits capacity .~Radio, .~Wiper 20A ¯ ~Heater, Relay, Monitor panel (gauge cluster), 20A Solenoid valve Working light,Deceleration motor 30A (option) 30A Horn-~Roomlight 30A 5A

Engine stopsolenoid Safety relay, Battery relay

Marked.~areindicated Cab spec.

2-11

OPERATING

EQUIPMENT

( FUSIBLE LINK A fusible linkis installed nearthefusebox to protectelectrical fittings and wirings fromovercurrents.

In case power does not come when the starterswitchis turned"ON",a disconnectionof the fusiblelink (~) is suspected.

Inspect andreplace thefusible link.

O

PartNo.......

PH73S00001P1

( STORAGE POSITION OF TOOLS For maintenancework, use the standard toolsstored in thetoolboxundertheoperator’s seat.

/ Tools-/

(STORAGE POSITION OF GREASE GUN For greaselubrication, use the greasegun storedin the tool box; open the tool box cover and take off the grease gun from greasegun fixingbracket.

Afteruse,fold the greasegun handle,wipeoff the grease adhered to thenozzle withclothandstoreit in place.

NOTE:Handling andPrecautions forGreaseGun At theinitial useof grease gun,it may bedifficult tocomeoutgrease.

At thattome,puttheleverto fullopen position, andfillgrease to theoblique linedportion in theleftsketch to make easyforairbleeding. ¯ Always operate theleverat fullopenor fullclosecondition, otherwise thegrease in thecartridge is notsucked up. ¯ Someairmaymixintothecartridge from thefixing threadup to thenextuseof the greasegun,causingdifficulty to comeoutgrease.

At thattime,remove thecartridge, bleed theairmixed in,andreset it.

2-12

Grease

Cartridge

OPERATING

EQUIPMENT

( CAB (OPTION) ] The followingequipmentare providedfor thecabtoventilate or"tofacilitate operation.

Catct Whenusing theequipment inthecab,setthesafety lever tothelockposition toavoid unexpected machinemovement if a workleveris accidentally contacted which could cause personal injury,

o! J lock& unlockcabdoor

¯ LOCKING CAB DOOR To lockthedoorin theopenposition, open the doorfullyuntillockson the catchlocatedon therearof thecab.

¯ UNLOCKING DOOR FROM INSIDE To unlockthe door,pullthe lever(~ backward.

¯ OPENING THE UPPER WINDSHIELD The upperwindshield can be storedin the ceiling of thecabinterior. on a level/solid ground 1. Parkthemachine andstoptheengine. (~ for the wiper 2. Removethe connector motor.

3. Lockthemachine withthelocklever.

4. Pullthelockpin~ on therightandleft at thetop of theupperwindshield inwardsandunlockit.

5. Gripthe lowerhandleby yourlefthand and the upper handle by your right handfrominsidethe cab,drawthemup andlockthe lockpin(~ at the backof theceiling.

Whenparking themachine, besuretolock thelock pin (~).Otherwise theupper windshield mayfalldown.

2--13

t

OPERATING

EQUIPMENT

¯ Closingthe upperwindshield on a level/solid ground 1. Parkthemachine andstoptheengine.

2. Lockthe machinewiththelocklever.

3. Unlockthe lock pin ~. at thebottom of theupper 4. Gripthehandle windshield by your left hand and the handleat the top of the upperwindshieldby your righthand.Then bring downthe upperwindshield gently.

5.

Be sure to lock the RH and LH lock pins(~.

6. Connect theconnector forthewipermotor.

Whenclosing or opening theupperwindshield, be careful nottocatch yourhandinthewindshield.

¯ LOWER WINDSHIELD Afterstoring theupperwindshield, liftthe lowerwindshield by usingboth yourhands to removeit fromthe windowframe.

1. Removethe lowerwindshield from window frame.

2. Position lowerwindshield on rearholder

® 3. Securethewindshield withplate(~.

¯ ROOM

LAMP

The lamp turnsON. ON...............

The lamp remainsOFF. OFF............

2-14

\ Plate (~)

OPERATING ¯ OPEN/CLOSE RIGHT SIDE

THE

WINDOW

EQUIPMENT

ON THE

1. Releasethe lock ~ and move the slide glass. the slide 2. Closethe windowby returning glassto the normalposition withlock ~, andlockit.

¯ SUPPLY WASHER LIQUID Thewashertankis installed on therightand frontsideof cab.

/

~

Cap ~WWasher

1. Checkthewashertankforliquidlevel. quantity fallsshort, re2. Whentheliquid move cap and supply the automobile withwasherliquid.

(OPENING/CLOSING

~~ Radiator cover \

THE COVER) *Engine

Donotopenwithengine running. ,

tank

Openthehood,usingthekey.

2. Open engineguard,and then open radiator cover.

Inspection, maintenance and lubricationshouldbe carriedoutaccording to Chapter4 in thisvolumeafteropening theunit.

NOTE:¯ Always stoptheenginewhenopening the covers. ¯ Whenopeningthecovers, openengine guard (~ thenopenradiator cover(~. ¯ Whenclosing thecover,securethe2 latches ofradiator cover (~)thenclose the engine guard(~.

2-15

Open

__ Latches ~---~=~ ~ t (Rod~/ //’~ ~lose

\/

I,

NOTES

CHAPTER 3. OPERATION

IOPERATION

1

INSPECTION BEFORE STARTING THE ENGINE-~ ¯ PREOPERATION INSPECTION Beforestarting theengine,walkaroundthemachineto checkforanyloosenutsandbolts,any oil,fuel,or coolantleakage, and thecondition of attachment andhydraulic system.

Checkfor anylooseness in theelectrical wiringand foranyaccumulated material (leaves, dirt,etc) hightemperature areas.

® ®

®®

cylinders, linkages, 1. Checktheengineforanyoil,fuel,or cool- 5. Checktheattachments, and hoses for any cracks, wear, or looseantleakage.

Repairas required. nessandrepairas required.

Check the area around the engine and ra° 6. Checktheguards, steps,and handrails for diatorfor any accumulated materialand damage, and the bolts for looseness. removeas required.

Repairandtighten boltsas required. equipment, hydraulic ° Checkthe hydraulic oiltank,hoses, andjoints foroilleakage, 7. Verifythatthegaugesandthegaugeclusterfunction properly. and repairas required. ¯

Checkthe trackassembly,such as the crawler,idlers,and sprockets, for any damage or wear,andtheboltsforlooseness.

3-1

OPERATION (CHECK BEFORE OPERATION ¯ CHECKING THE COOLANT LEVEL 1. Thereserve tankfor thecoolant is locatedon the leftrearsideof the machine.

2. Thecoolant levelshouldbe between FULL and LOW in the reservetank O. If the coolant is LOW, remove the reserve tank cap and refillwith coolant.Use softwatersuchas tap waterwhichnot generate incrustation, as coolant. tankis empty, refill with 3. If thereserve coolantfromtheradiator side.At this time,loosenthe radiatorcap slowly.

Afterconfirming thatthe pressure has been released,push the cap down and holdit downwhileturning to remove.

WARNING Usually donotopenthecapontheradiator body.

Particularly never openthecapimmediately after operation.

Otherwise hotwatersprays outandis dangerous.

¯ CHECKING THE ENGINE OIL LEVEL themachine before performing the NOTE : ¯ Level inspection.

Avoid overfilling theoilpan.Excessive oilmaycause theengine tomalfunction.

Before starting theengine, check theengine oillevel.

Afteroperating themachine, checkthe engine oillevelabout 30 minutes after theengine stops.

1. Unlockthe hoodlock and open the engineguard.

2. Pull out the levelgauge(~, and completely wipeofftheoiladhering toit.If theoillevelis between theH andL, the levelis sufficient.

If oilis extremely contaminated or deteriorated, changeit regardless of theperiodical changeperiod. level is low,refill withengineoil 3. Iftheoil fromthefillercap(~. Afterfill-up, checktheoillevelagain.

4. Wipeoff thefillercap (~)completely; thenattach it.

5. Closeand lockthe guard.

3-2

RADIATORCAP

LOW~

OPERATION ¯ CHECKING THE FAN BELT Checkthefanbeltforinsufficient tension, wear,anddamage.

If thebelttension is insufficient, thismay causebatterycharge failure, overheating of theengine, or abnormalbeltwear.If toomuchtension is applied to thebelt,thebearings or beltmaybecome damaged.See the section,MAINTENANCE (EVERY250 HOURS)for detailson the inspectionand adjustment procedurefor the belt.

¯ CHECKING THE HYDRAULIC OIL LEVEL

~..lOkgf (221b)

~

Hydraulic oillevel checkposture

1. Thehydraulic oiltankis located on the rightsideof themachine. ,

°

~""-’Belt

Setthemachine to thehydraulic oillevel checkstance(as shownin the figure) on thelevelandsolidground; thenstop theengine.

Checktheoillevelwiththelevelgauge ~) on the side face of the hydraulic tank.If thegaugeindicates thattheoil level isbetween H andL,oilissufficient.

Theoillevelchanges according to theoil temperature.

Thus,checkthe oil level according to theguideline below.

Levelgauge@ ~H

¯ Beforeoperation: AroundL level I- Theoiltemperature is 10-30 °C (50-86 °F). ¯ Duringnormaloperation: AroundH level I" Theoiltemperature is 50 - 80 °C (122-176 °F).]

3-3

Level~~

OPERATION (HANDLING

OF THE NEW MACHINE

Poorhandling of a newmachinewillhavean adverseeffecton its servicelifeand performance.

Warmup themachinesufficiently thenoperate the machinewith aboutan 80% loadaccording to thetablebelowduringthebreakin period.

Hour Meter Up to 10 hours Up to 100hours Over 100 hours

Load 60 % 80 % Full

(ADJUSTMENTBEFORE STARTINGTHE ENGINE’)

LOCK POSITION

Sitin the operator’s seatand leanagainst theseatback.Adjust theoperator’s seatpositionso thatthe pedalsandleverscanbe operated whilesitting in a natural position.

Lock

on

I~

~//

~STARTING AND STOPPING THE ENGINE)

®

Before starting theengine, setthesafety lever to thelockposition to prevent themachine from moving if thecontrol leverisaccidentally contacted.

\

¯ START-UP UNDER NORMAL CONDITIONS thatthesafety lever(!)is set 1. Confirm thelockposition.

2. Beforestartingthe engine,checkthe safetyof yoursurroundings. lever(~ to a little high 3. Movethethrottle thanlowidling position.

OFF I \ \

thekey(~)andturnit to the 4. Insert position.

ON /

HEAT /

START

\ \

5. Soundthehornto warnallpersonnel in thevicinity.

,®

3-4

OPERATION ¯

Turnthe key (~) to STARTposition starttheengine.

Afterstarting the engine,releasethe key immediately.

Thekeywillreturn to ON by itself.

doesnotstart eventhough the NOTE ¯ Iftheengine ¯ keyis turned to theSTARTposition, turn thekeyto OFFandthentryagain.

Do not continue holding thekeyat STARTformore than15 seconds¯ ¯

Movebackthe throttle lever(~) to LOW to warmup the engine.

appears on thegaugecluster NOTE ¯ If a warning whentheengine isstarted, immediately stop theengine andtroubleshoot.

¯ START-UP UNDER COLD CONDITIONS In coldweather, dueto theincrease in oilviscosityanddecrease in batteryperformance, starting the enginemay be difficult.

Under thoseconditions, usetheairheater to start theengine easily. formorethan15 NOTE: Donotusetheairheater seconds continuously¯ Iftheengine doesnot start, return thestarter switch toOFF,wait 30seconds, andthentryagain¯

]

1. Performsteps1~3 mentionedin STARTUP UNDER NORMAL CONDITIONS shownon the previous page.

OFF i

2. Turn the key (~) to HEAT and preheat for15 seconds to makestart-up easier.

3. Turnthekey to STARTto starttheengine.

4.

HEAT

,~~,,/~~

ON START

Afterstarting theengine,releasethe keyimmediately.

Thekeywillreturnto ON by itself.

5. Set the throttleleverto LOW to warm up theengine.

3-5 /

OPERATION ¯ START-UP WITH THE BOOSTER CABLE Observe thefollowing precautions whenusing booster cablesto jump-start thebattery.

¯ Explosive gas(hydrogen gas)in thebattery. ¯ Donotproduce sparks nearthebattery.

Sparks mayignite thehydrogen gasproduced in the battery andcause anexplosion.

To prevent producing sparks, donotallowthebooster cable endtotouchthemachine. ¯ Never smokewheninspecting thebattery fluid level. ¯ Avoidcontact withskinor clothing andwear eyeor faceprotection whenworking on or around batteries. ¯ Wear protective glasseswheneverjumpstarting withbooster cables. ¯ Observe theproper procedures whenstarting theengine withbooster cables.

Improper operation maycause anexplosion, resulting inserious injury. ¯ Connect booster cablesonlywitha battery source whosevoltage is thesameas themalfunctioning machine’s. ¯ TurnOFFalllampsandaccessory switches.

If theyareON,theaccessories willbegin operatingwhenthepoweris connected, andan accidentmayoccur. ¯ CONNECTING

A BOOSTER CABLE ;AUTION

Thestarting system of thismachine is 12V. Usea 12Vauxiliary battery.

If theengine is started using highvoltage, suchas fora welding machine, theelectrical system willbecome damaged.

1. Stoptheenginethatis runningnormally.

2. Connectoneend of a boostercable(red) withthe positiveO terminal of a troubled machineand anotherwith the positive0 terminalof a normallyoperatingmachine.

3. Then connectone end of anotherbooster cable(black)withthe negative O terminal of the normallyoperatingmachine and anotherend with the upperframeof the troubled machine.

In thelastconnection,sparkswilloccur.

Therefore connect the boostercable as farawayfrom the battery as practicable.

After connecting the terminals securely, 4. starttheengineof thetroubled machine.

After starting the engine, disconnect the 5. booster cables.

3-6

OPERATION ¯ DISCONNECTING

THE BOOSTER CABLE

1. Disconnectthe boostercable(black) endthatis connected to the Engineof the troubled machine.

Cableconnecting order ~--+~)-K~ Cabledisconnecting order ~)-K~--~(~)-K~

2. Disconnectthe boostercable(black) endthatis connected to the negative O terminal of the normalmachine.

3. Disconnect the boostercable(red)end thatis connected to thepositive O terminalof the normalmachine.

4. Disconnect the boostercable(red)end thatis connected to thepositive (~)terminalof thetroubled machine.

(Red)

® Normal battery

~

Discharged battery

t I (Black)l

TotheEngine of thetroubled machine ¯ INSPECTION AFTER STARTING THE ENGINE Inspect and checkthefollowing itemsafter starting theengine.

If a warning appears on theMonitor Panel, immediately stoptheengine andfindthecause of the problem, 1. Checkif thehydraulic oillevel,shown on thegaugeon thetanksideis at the specified level.

2. Checkforany oil or coolantleakage.

3. Checkforany batterychargeor engine oillevelalarmindication.

Also,confirm that the engine coolanttemperature and theresidual fuelamountshownare proper.

4. Checkif thenoiseandcolorof theexhaustgas are normal.

5. Checkfor any abnormal noiseor vibration.

3-7

OPERATION ¯ STOPPING THE ENGINE Observethe followingprocedure for stoppingtheengine. placethe attachment to the 1. Normally, groundbeforestopping theengine(exceptforspecial situations).

2. Pullupon thesafety levertosetit tothe lockposition.

3. Movethe throttlelever(~ to LOW and idleforabout5 minutes. theengine properly, be sureto NOTE: To maintain idleitforabout 5 minutes before stopping.

4. Turn the key ~ to OFF to stopthe engine.

5. Pull out the key ~.

OFF H EAT \\

3-8

ON / START

OPERATION I WARM-UP RUNNING 1 ¯ WARMING UP THE ENGINE

TEMP

NOTE: Neverracetheengine.

Racingmaycause engine problems ormalfunctions. foraboutfiveminutesat 1. Runtheengine no load. ¯

If theMonitor Panelengine coolant temperaturegaugeneedle is withinthe whiterange,the engineis thoroughly warmed up.

¯ WARMING UP THE HYDRAULIC OIL Theproperhydraulic oil operating temperature of thismachineis approximately 50°C (122°F).If the machineis operatedsuddenlywhenthe temperature is 25°(3(77°F) or less,thismay seriously damagethe hydraulicequipment.

Beforeoperation, warm up hydraulic oil to 25°(3(77°F)or more preventdamageto hydraulicsystemcomponentsand ensureproperoperation of controls. The warm-up procedure is given below. during winter or in NOTE: Warmup sufficiently coldregions. theenginespeedto intermedi1. Increase ate.

2. Operatethebucketleverintermittently foraboutfiveminutes.

3. Operatethe arm,boomand slewingsystemsat no loaduntilwarmhydraulic oil circulatesthroughoutthe hydraulic equipment. oil,in4. Afterwarmingup thehydraulic crease the engine speed to maximum and proceedoperating.

3-9

White~ Blue

C

o Rightoperating lever

Bucket ~ diggingS/Bucket -~ _q~’~~A dumping

OPERATION ( OPERATION PROCEDURE ¯ PRECAUTIONS DURING OPERATION NOTE: ¯ TheMonitor Panel doesnotnecessarily indicate allofthemachine’s conditions.

Thus, donotdepend ononlyalarmindications on theMonitor Panel.

Perform dailyinspections, following theitems listed inthisoperators manual. ¯ If a problem occurs during operation, immediately stoptheoperation andtroubleshoot. ¯ Never operate themachine until themalfunctioned pertisrepaired.

Ifthemachine continues tobe operated while itisstill malfunctioning, a serious accident mayresult. ¯ PROCEDURE FOR THE OPERATING LEVERS AND PEDAL The boom,arm,bucket,slewing, dozerblade and swing motionscan be done independentlyor simultaneously by usingtheoperatinglevers.

Operating thismachine before checking function of eachoperating levercancauseunexpected machine movement, whichcanresult in serious personal injury.

Makesureyoucheckandknowfunction of each operating lever before operating.

®

Boom

NOTE: Thehornswitch willbe assembled to the right control lever atfactory.

e OPERATING LEVER PATTERN (IS¯) Leftoperating lever Rightoperating lever Boom lowering ® Arm extending ® Arm digging ® Boomraising left ® Slewing ® Bucketdigging right ® Slewing @ Bucketdumping ¯ DOZER BLADE OPERATING

I®I

iii~iii~iiii~ii~i~ii~i~!~i~ii~i~ Dozerblade

LEVER

,odou I

¯ BOOM SWING OPERATING PEDAL Use thispedalto swingthe hoe attachment leftandright.

Press on theheelside @ Press on thetoeside@ @ Right 55 ° @ ] Left85 ° NOTE: Cabspecification (max.

70° to theleft)

3-10

@

OPERATION ¯ TRAVELING

PROCEDURE

Ifthetravel motor islocated inthefront ofthe machine, thetravel levermustbe operated the otherway.Confirm theposition of thetravel motor before operating thetravel lever.

Check thattheareaaround theexcavator issafe, thensound thehorntosignal thatyouarestarting tooperate theexcavator. ,

.

Forward/reverse travel To movethe machineforward, pushforwardboth(right andleft)travel levers.

To move the machinein reverse,pull backthetwotravel levers.

Travel speed changesaccording to how far you push or pullthelevers.

PivotTurn Pivot means to change directionby driving onlyoneof thetracks.

It iseffectedby pushing andpulling oneof the travel levers.

[Driving forward andreverse]

1

[Pivot turn]

Travel motor

.

Spin Turn Spin turn meansturningthe vehicle aroundon-the-spot, by drivingthe RH and LH tracksin oppositedirections.

To do this,pushoneof thetravel levers forwardandpullthe otherone back.

upontypesofshoes andground NOTE: ¯ Depending condition, theclimbing ability ofthemachineis 30° (58%)maximum. ¯ Whendescending a slope, operate theleversslowly.

Forbraking, bring thelevers toneutral position, andthewillbrake by itself.

3-11

[Spinturn]

Travel motor....~

OPERATION ¯ TRAVEL PRECAUTIONS Condition wherethedriving direction is reversed

Usea flag-man whentraveling ontheshoulder of a roadorina confined area. °

,

,

.

,

¯

.

.

Travel

Beforeoperating thetravel levers, confirm which directionthe tracksand travelmotorsarefacing.

Travelon flat groundand in straight lines(orlargeangles)as muchas possible.

Whenturning themachine, usealternating forward and reverse movements as much as possibleinstead of makingone sharpturn.

Checkthe strength of bridgesandroad shoulders, andreinforce themif necessary.

Usedecking or plating to protect roads.

Be especially carefulwhensteering on pavement in hot season.

Be careful notto comeintocontact with bridges or electrical powerlines.

When travelingon rough ground,use low (1st)speedto reducethe shock the machine.

Prevent boulders fromstriking intothe travelmotor.

Also,do notrunoversuch boulders, becauseof the unreasonable forceit places on thetracks.

When travelingor loading/unloading on snowyor icy roads,preventthe machinefromslipping becauseof clogged shoes.

3-12

|

OPERATION ¯ OPERATING THE MACHINE AND ON SOFT GROUND ,

IN WATER

Wherea riverbedis flatandwatercurrent is slow,the machinemay be operatedin a water-depth to thelowerrolling faceof theupperroller.

Whereriverbed condition is pooror watercurrent is fast, payfullattention so theslewing bearing, slewingpinionandswiveljointare not immersedin wateror mud.

A SK25SR¯ SK30SR¯ SK35SR355mm(14 in.) ,

isoperated inwater or mud, NOTE: If themachine theslewing bearing andothers maybe worn abnormally.

Immediatereplacement of grease oroverhaul oftheslewing bearing is required.

Suspend operation andcontact withKOBELCOdistributor. °

On a softground, the machine bodysinks little by littlein somecases.Therefore, pay fullattention to the machineat all timesduringoperation.

¯ MOVING THE MACHINE ON SOFT GROUND Avoidmovingthe machineon soft groundas muchas possible.

1 . Movethemachineto an areain whichthe machine is ableto driveitself.

2 . When workingon soft, weak land, use careso as notto getin beyonda depthat which the machine may be pulled out should it getstuck.

3 . In case you can not drivethe machine, lowerthebucket to theground andliftthe machineslowlyby pushingthe boom and the arm towardsthe machinebody.When doingthis,operate the machine so unreasonableforceis notexerteduponthe machinewhen operatingthe boom,arm and travel levers at thesametime.

4 . In casethemachineis notableto travel because itsundercarriage is stuckin mud, sandor gravel,take each trackoff the ground by pushing the boom and arm againstthe ground,scrapeoff mud,sand and graveland thenget the machineout of the trouble.Graveland mud may be cleared if yourotate theraised trackback andforth.

3-13

,

If themachine shouldsinkin softground andcan notescapeby itsown power,pull the machine out by using another machine.Use care in placingwire slings aroundthe machine.

Referto page3-1 4, "Howto pullthe machinebody".

OPERATION ¯ CARE TO BE EXERCISED WHEN WORKING ON A SLOPE Machine operation on a slope isinherently dangerous.Stepdownspeed, usingcareso themachine doesnotturnoverandslide sideways. directions on a slopeas it 1. Do notchange may causethe machineto turnover or slide sideways. In case you must changedirection on a slopefor an unavoidable reason, do it on a mildslope on solidground. a slopeas it may cause 2. Avoidcrossing themachine to slipsideways. on a slope,do notslewing 3. Whenworking the machinein a down hilldirection.

Thiswillreduce thestability of themachine.Performslewingand boom actionscarefully at lowspeed.

¯ HOW TO PULL THE MACHINE

BODY

Incaseofpulling another object withthemachine, donotpulltheonewhose weight isbeyond theown weight of themachine, because itisdangerous.

1. Improperpullingof the machinethat becomesout of order,may causeseriousinjury.

2. Usewireropeswithplentyof strength when the machineis pulledby another machine.

3. Neverpullthe machineon an inclined place.

4. Do not use the wire ropes with kink, twistingand/ordamage.

5.

¯

Alwaysprovidea watcherduringthe pulling in orderto immediately stopthe pullingwhenanyabnormalities happen.

Keepa plentyof distance fromthewire ropesduring thepulling.

3--14

OPERATION (OPERATING METHODS FOR IMPROVING EFFICIENCY I DIGGING °

°

°

°

Whendigging, use a combination of arm digging and bucket digging to achieve maximumbucket penetration and efficiency.

Whenmoving the boomraise or lower, begin and end the operation very slowly and smoothly.

Whenthe boom is stopped suddenly, strong shocks are exerted upon the machine body, causing excessive wear and possible damage.

Point the bucket teeth at the direction of digging. This will decrease digging resistance and possible damageto the teeth.

Whenmaximumdigging force is needed, dig earth slowly having the boomand the arm at nearly 90° °.

-110

3-15

OPERATION °

Neverextendandretractthearmcylinder repeatedlywith the arm cylinder extendedat maximumto empty material.If sandandsoildo notfallout, movethe bucketleverbackand fortha fewtimes.Avoidshakingoutsoilusing shockat theend of thebucketcylinder stroke.

¯ DOZER BLADE Pull the attachmentin before using the dozerbladeforleveling.

1. Removesoil from the top of mound.If thereis toomuchloadon theexcavator, adjustthe dozerbladeup or down 2. Removesoilfrom the sidesof mound.

¯ SIDE DIGGING

Astheboomswing operating range is wider, operatetheattachment paying attention to thesurrounding conditions.

B) Left swing

~

By pressingthe front and rear parts of swingpedalalternatively, the boomswings in rightandleftdirections andslewsenablingsidedigging in narrowspaces.

By pressing the frontpartof swingpedal, the boom swingsleftward, and by pressing the rearpartthe boomswingsrightward.

Theadvantage of thisfunction is thatit enablessidedigging workas shownin thefigure.

Theleftswinganglecanbe madesmallerby meansof theswingstopper.

(Cabspecificationandwhenwidebucketis attached.)

3--16

(A) Right swing

i L Ii J i i

1 I r

/ | i t

I,

OPERATION ¯ LOADING the machineat 1, Whenloading,position thebackof thedumptruckto be loaded.

Avoidslewingthe arm overthe operator’sseat of the dump truckor other personnel.

2. It is recommended that loading be started fromthe frontsideof thedump truckbody.Thiswillmakeloadingeasier and more soil can be loadedthan loading fromtheside,

¯ WORKS IN NARROW SPACE Theposition shownin theFigure is available forslewingin narrowspaces.

¯ MINIMUM

SLEWING

POSTURE

1. Extendarm cylinderand bucketcylinder to maximum length, and fold bucket.

2. Extend boom cylinder to maximum length.

3. Swingboom by pressingpedalto operate rightward.

i

4. Handleoperating leverto slewit. ¯ AT SWING (Minimum slewing radius) mm(ft-in

~

EC.

SK25SR

SK30SR

SK35SR

Canopy Cab Canopy Cab Canopy Cab

Atswing 1,295 1,755 1,350 1,770 1,450 1 ,,940 (Minimum (4’03")(5’09")(4’05")(510) (4’09") (604 slewing radius)(Left 85") (Left 70’) (Left 85’) (Left 70’) (Left 85’) Notswing 1,740 2,110 1,810 2,130 1,910 2,310 (Minimum (6’11") (5’11") (TOO")(6’03") (7’07"/ slewing radius) (5’09") attachment frominterNOTE: Usecaretoprotect ference.

3-17

OPERATION ( PROHIBITED OPERATIONS ¯ DO NOT OPERATE THE MACHINE BY ITS SLEWING FORCE Movingrocks and debris and destructing sidewallsby the slewingforceof the machinewilldamagethe frontattachment and causea reduction in theservice lifeof the slewingsystemof the machine.

¯ DO NOT OPERATE THE MACHINE BY ITS TRACTIVE FORCE Do not travelto loadbucket.Theseoperationswillexertunreasonable forceuponthe machinestructure.

¯ BEWARE OF MOVING THE CYLINDERS TO STROKE ENDS If thebucketcylinder andthearm cylinder aremovedto theendof theirstrokerepeatedlyto shakeoffsubjectto impactswhich resultsin excessive abrasion and damageto thehydraulic cylinder.

Alwaysstopthecylindersbeforetheyreachthe end of their stroke.

¯ AVOID HAMMERING OPERATION Do not performhammeringand pile driving operations, usingthe bucket.Such operationscausedamageto the bucketand the frontattachments of the machine.Suchoperations are dangerous and should be avoided in allcircumstances.

3--18

OPERATION ¯ DO NOT DO UNREASONABLE DIGGING Do not lift machine body and float to the ground to dig material as it exerts unreasonable force upon all parts of the machine.

¯ CAUTION FOR FOLDING UP ATTACHMENT Whenthe attachment is folded up travel or transport, pay attention for the bucket not to hit the dozer blade.

X

¯ CAUTION FOR DEEP EXCAVATION During the digging works for a deep place with putting the dozer blade at front position. Pay attention not to get touch the boomcylinder with the dozer blade.

For such works, put the dozer blade at backward, except the necessity.

¯ CAUTION FOR DOZER BLADE TO HIT OBSTACLES Pay attention for the dozer blade not to hit any obstacles such as rock lump.

It causes for damageson the dozer blade and cylinder.

X

3-19

OPERATION ¯ DO NOT SUPPORT MACHINE WITH DOZER BLADE AT ONE END Whenthe dozerbladeis used as an outrigger,do not supportthe machineat one end of thedozerblade, butsurely at bothends.

X O

¯ DO NOT USE THE MACHINE TO LIFT This machineis designedfor diggingand loadingoperations.

Use extremecaution when handlingheavyloads.

Do not exceedthe machine’s capacity.

Use only approvedslings and shackles (clevises).

Neverlifta loadby usingthe bucket teeth.

¯ DO NOT HIT THE CAB WITH THE ATTACHMENT When operatingthe boom,arm, and bucket simultaneously, the bucketmay contactthe cab or machinefront.

Beforeusinga newattachment forthe first time,confirmif therewillbe interference withotherparts.

3-20

(

OPERATION I PARKING THE MACHINE I NOTE: Closethecabdoorandwindows fullywhen parking.

If themachine is parked withthe dooror windowsopen,windor rainmay damage theelectrical equipment, suchasthe controller inthecab.

1. Park the machineon the levelground.

Set the armvertical to thegroundand lowerthebucketto theground.

2. Pullup thesafety leverandsetit to the lockposition.

3.

i;iiiiiii; iliiiiiiiiiiiiiii ii!ii!il

Setthe throttle leverto LOWand idle for 5 minutes.The temperature of the enginewillcoolgradually, helpingto prolong theengine life.

4. Turnthestarterkeyto OFFto stopthe engine ; thenpulloutthekey.

5. Beforeleavingthe machine,closethe windows,door, and each cover,then lockthemachine.

PRECAUTIONS AFTER OPERATION "~ lowerthebucketto the 1. Afteroperation, level and solid ground where no rockslide, landslide or flooding is expected. do not 2. Fullyrefillwithfuel.However, overfill (tothe topof thetank).When the externaltemperature goes up, the fuel may expandand overflow.

3. Removeany mud adheringto the track assembly.

4. Checkfor any oil or coolantleakage.

Checkthe attachment, exterior,and trackassembly.Immediately repairas required.

3--21

OPERATION ( CAUTION ON USING RUBBER SHOES t A GOOD WAY OF USING RUBBER SHOES The rubbershoe offersexcellentfeatures which a steel shoe does not possess.

However, if it is used the sameway as the steelshoe,advantages of it cannotbe utilizedto thefull.Operate themachine by the best use of rubbershoes,dependingupon sitecondition andtypesof operation.

Comparison betweenrubbershoeant steel shoe Rubber shoeSteelshoe Lessvibration a @ Smoothrun @ © Low sound @ A No harmto pavedroad @ A Simplehandling @ A Susceptible to damage A @ Largetraction power @ @ @: Excellent O : Good A: Ordinary ¯ CAUTIONS ON THE SHOE Prohibited work.

and observewhat are prohibited and cautioned against, in orderto extend theservice lifeof therubber shoeandhaveit fulfill its advantages to a maximumpossibleextent.

Do not fail to read through"Cautionson usingrubbershoes"beforeuse.

GUARANTEE OF RUBBER SHOE Guaranteedoes not cover such damages doneto therubbershoethatresultfromimproper handling and/or operation as; Failure to inspect forproper tension, executionof siteworkin suchplaceswherethere are iron plates,U-drains,blockcorners, sharpcrushedgravelsand stones,ferroconcretedebris,iron scrapsand others whichmay tearofftherubbershoe,andneglectto observe prohibited operations.

USE OF RUBBER

X

~, CAUTION Operations andslewing motions on suchplaces shall notbe performed.

Gravel-mixed land,rugged andsolidrockbed, ferro-concrete, ironscraps, edges ofironplates.

CAUTION Onsuchplaces as riverbeds where therearelots ofrolling stones ofdifferent sizes, therubber shoe tendsto bedamaged or derailed as theresult of gravel inclusions.

Theservice lifeof therubber shoewillbereduced ifsoilispushed byforce when therubber shoeisslipping.

X

Donotletgrease, solvents, etc.,geton rubber shoes.

If itdoes, wipeitoffwitha cloth.

The rubberwilldeteriorate rapidlyif the grease, solvents, etc.,arenotremoved.

Although the rubbershoedisplays manyadvantages because of itsmaterial properties, it hasdisadvantages in termsof strength.

It is therefore necessary to getfullyfamiliar withthe characteristics of therubbershoe 3-22

&

OPERATION

Do notentersuchheated places as an open-air fire, ironplate andasphalt left inthesunshine. ¯ When storingthe machinefor long period (threemonths), keepit indoorswhichwill notbe exposed to directsunshine andrain.

Ifthemachine ismoved onthecrawler ofoneside withthecrawler ofanother sidefloating, therubbershoemaycomeoffor be damaged.

mra

¯ CAUTIONS ON USE Use careof thefollowing whenworking.

Rubber shoes slipeasily, icysurfaces.

Takethenecessary safety precautions, suchasnot driving on snowy, icyslopes.

1. Avoidmakinga spinturnon a concrete road.

2.

Avoidabruptchangeof directions as suchwillcauseearlywearor chipping of therubbershoe.

3. Exercise careso therubbershoeis not damagedby the bucketwhileworking.

4. Do not operatethe machineby pressing thebucketagainstconcrete ridgesand walls.

5. When the machineis liftedup by the boomandarm,lowerit gently.

3--23

/

OPERATION °

°

If the machinehandlessalt,ammonium sulfate, potassium chloride, potassium sulfateor doublesuperphosphate of lime,the adhesion of thecoremetalof the shoe willget loose.Refrainfrom usingthe shoe or wash it with water afteruse.

The rubbershoe shouldbe used within - 25°C,--"+550(3(-13°F,--131.0 OF ), considering the physical properties of rubber.

¯ HANDLING THE RUBBER SHOE Usethe rubbershoeunderpropertensionto preventit fromcomingoff.Undertensioning causesslipping-out of the rubberunderthe followingconditions.

Operatethe rubber shoe carefullyeven when tensioningis proper.

1. Avoidslewingthe machinewherethere is a bitdifference in level(about 20cm/ 8in) At such objectsas a curbstoneor a rock.Whencrossing overa placewhere thereis a difference in level,do it at rightangles withthedifference in level. °

°

When climbingback on a slope,avoid turning the machine whileclimbing on a pointbetweena levelgroundand the slope.

If youhaveto slewing on a slope, do it veryslowly.

If you travelon a slopeor a concave withonesideof themachine lifting, it will damage the rubber shoe. Always travelwithboth sidesof the machine bodylevel.

"///////d~///,

Do notturnthemachine withtherubber shoein a posture asshown inthefigure asitwillcause the rubber shoeto slipoutor bedamaged.

L ,iX( l]

3--24

OPERATION I INSPECTING THE RUBBER SHOE Repair or replace therubber shoeif it falls intothefollowing condition. °

Theheightof lug If thelugof height (~ wearsoff,tractionpowerdecreases.

Replacethe shoe with a new one if (~ gets down below 5mm.

I-L I J-I l~Lower roller

~

etalcore

Rubber

~ Lug Steelcord

o

If thelugwearsoutat an extent thatthe steelcordin the shoeis exposedover twolinks,replacethe shoewitha new one.

Steelcord

°

If the coremetalof therubbershoeis foundto haveslippedout at morethan one place,replacethe shoewitha new one.

J ~ Metalcoreslippedout

o

If a crackwhichhasdeveloped to about 60mmlengthis seenbetweentherubber shoe and the lug, repair the shoe.

However, repairthe shoeimmediately if thesteelcordinside is seenexposed even thougha crackis smallandshort.

~ /or

For 60mm(2in/ over, repair

L[ ~ is

needed

contact yourKOBELCO disNOTE: Forrepairs, tributor.

Repair is notyetnecessary

3-25

OPERATION ( REMOVING RUBBER SHOES 1. Loosenthe tension.

2. Lift the excavatorbody usingthe attachmentand dozerblade.

3. Placeironpipesin theshoe,andslowly turnthesprocket towardstheback.

4. Stopthe sprocketwhenthe ironpipes reachtheidlerand theshoecomesaway fromtheidler.

iiiiiiiiiiiiiiiiii!iiii!!i iiiii!!!iiiiii!iiii ii!!iii iiii! iSiiii!iii

5. Slidetheshoeto thesideandoff.

WARN

NG

Whenperforming theabove-mentioned operation, confirm thattheinside grease is completely emptiedbefore turning thesprocket.

Itisabnormal if grease doesnotcomeoutwhenthegrease nipple is loosened.

Contact yourKOBELCO distributor.

Do notloosen thegreasenipple morethanone turn.

Usecareasit mayjetoutbecause ofhigh pressure grease inside.

If grease is hardto get out,movetherubber shoebackandforth.

REMOVING

( INSTALLING RUBBER SHOES

Direction of r~l~ion

andsetit 1. Placetheshoeon thesprocket on the crawlerframe.

2. Placeironpipesin theshoe,andslowly turnthe sprocket towardstheback.

3.

’~

Stopthe sprocket when the ironpipes reachtheidler.

it canbe securely set 4. Slidetheshoeuntil on theidler, thenremove theironpipes.

Ironpipe

on thesprocket 5. Oncetheshoeis securely andidler, adjust thetension.

INSTALLING

6. Checkagain,thenlowerthe machine.

Direction of rotation fromsteelshoesto rubber NOTE" Whenswitching shoesandviceversa, contact yourKOBELCO distributor.

3-26

F

OPERATION HANDLING ¯ HANDLING

UNDER SPECIAL CONDITIONS UNDER

COLD

¯ OPERATION

)

CONDITIONS

is extremely low,oil NOTE: Whenthetemperature flowproperties becomelow,makingstartup difficult; coolantmay freeze,damaging theradiator. .

FUEL AND OIL Usefuelandoilof highquality foreachsystem.

See section, MAINTENANCE,"RECOMMENDED OIL VISCOSITYAND ITS CAPACITY"for details on theproperviscosity.

2. COOLANT ¯ Whendrivingor storingthemachinein cold regions, the ratioof mixingantifreeze into the coolingsystem should conformwith the lowestpredictedambienttemperature.

If coolant freezes, theradiator, crankcase, and cylinderhead may become damaged. ¯ When shippedfrom the factory,the machinecontains coolantin whichall-seasontype LONG LIFE COOLANT is mixed. ¯ When drivingor storingthe machinewhen the temperature is low,inspectthe coolant to maintainproperconcentration. .

BATTERY When the temperature becomes low, the chargingabilitymay go downor the battery may freeze. Charge thoroughly at the propertime and coverthe batteryfor heat insulation.

Keepthe batteryfluid’sspecific gravitybetween1.30-1.25(20°C).If thespecific gravity goes down, the batterymay be apt to freeze.

1. BEFORE OPERATION ¯ Check the plugs, cocks, and covers for looseness. ¯ Applygreaseto the electricalequipment as requiredto preventcorrosion.

2. AFTER OPERATION Wash the machine thoroughly to remove salt. Applyoil or grease as necessaryto preventcorrosion. ¯ OPERATION

HANDLING OF ELECTRICAL EQUIPMENT The electrical equipment is especially sensitiveto water.Be carefulnot to exposethe electricalequipmentto waterwhen washing the machineor when it is raining.The controller(microcomputer) is installedat the operator’s seatof the machine.

Neverexposethe operator’s seatto water.

IN DUSTY

AREAS

1. AIR CLEANER Cleanor replacethe elementat the proper time.

2. RADIATOR Cleanthe radiator at the propertimeto prevent the radiator core from becoming cloggedwithdust.

3. FUEL Be carefulnot to let contamination in the fuelwhen replenishing it. Inspectthe elementsand filtersat the propertime.

4. ELECTRICAL EQUIPMENT Cleanthe starterand alternator especially, at the propertime,to preventdustfromaccumulating. ¯ HEATER HANDLING METHOD (CAB spec.)

1. When the ambienttemperatureis low, turn the car heateron to warm.

2. Whenyou needto use the heater,openengine guardand open the valve @ mountedon the water manifold on engine upper part by turningit counterclockwise to circulate the enginecoolingwater.

4. AFTER OPERATION Mud and water adhering to the machine may freezeand this may becomeit inoperative.Keepthe following measuresto prevent malfunctions. ¯ Remove mud and water adhering to the machine. Remove water adhering to the rollers thoroughly and park on dry ground to prevent the track assembly fromfreezing. ¯ Retract the cylinder rods to minimum lengthto reduceexposedareaof the rods.

This willpreventmud or wateron the rod facesfrom damagingthe seal. ,

ON BEACHES

@

3. Whenthe car heateris not usedfor longtime due to an off season,closevalve@ by turningit clockwise.

NOTE: Sincethe heatingsystemusinghot water fromenginecoolingwateris employed, the hotairdoesnotblowif thecooling wateris not warmed.

3-27

OPERATION (PRECAUTIONS

WHEN STORING THE MACHINE FOR A LONG PERIOD

Whenstoringthe machine for morethanonemonth,observethefollowing pointsto preventthe machinefunctions fromdeteriorating.

Item

Action

Cleaning

Cleanthe machinethoroughly.

Checkthe trackassemblyfor any malfunctions and serviceas required.Greaseeveryrequired part.

Lubrication

Checkthelubricating oilto makesureit is at theproper levelandfor contamination Replenish if necessary, and changeif contaminated. ¯ Lubricating oildeteriorates evenwhenthemachine is notused. ¯ Be sureto checktheoilbeforeusingthemachine again.

Applysufficient rustpreventives to portions whererustis likelyto occur(especially theexposed rodof thecylinder).

Battery

Removethe negativeterminalfrom batteryor removethe battery fromthemachine andstoreit.

Coolant

If thereis a possibility thattheradiator mayfreeze, mixantifreeze in withthecoolant.

Normally, longlifecoolant is mixedin,so it is not necessary to changethecoolant.

Dust and humidity p revent i on Keepthemachine in a dryplaceindoors.

If themachine mustbe kept outdoors, laytimberon theflatgroundandprotect themachine with cover.

¯ Parkthe machinewiththeexposedpistonrod of the cylinder retracted as muchas possible. ¯ Lowerthebucketto thegroundandsettheblockson the track.

Periodical operation for lubrication (duringstorage)

If theoilfilmon thepartsis insufficient andtheyrust,abnormal wearmay occurwhenthe machineis operated the nexttime.

Startthe engineand operatethe machineand operating unitoncea monthto lubricate allof theparts. ¯ Before starting theengine, checktheengine oilandcoolant level, andreplenish if insufficient. ¯ Wipe off the rustpreventives from the cylinderand pistonrod throughly. ¯ Afterstarting theengine,warmup themachinecompletely.

Repeat traveling, slewing, andexcavating several timesto lubricate eachpartof themachine.

3-28

I MAINTENANCE (PERIODICAL

1

INSPECTION

AND MAINTENANCE)

¯ PERIODICAL INSPECTION AND MAINTENANCE Periodical inspection enables the machineto makethe most of its functions and prolongs the machine life. Basically, lubrication and maintenance intervals are determined by the hour meter. If performing lubrication and maintenanceaccording to calendar time is preferred, the hour meter reading corresponds to the lubrication and maintenance period (daily, weekly, monthly, etc.) in calendar time; thus calendar time can be used. Items for which service time cannot be specified are explained in the section WHEN REQUIRED. It is recommended that replenishment and maintenanceshould be performedearlier than the service time specified in the LUBRICATIONAND MAINTENANCE INTERVALSlist when using the machine under severe conditions or in dusty or humidareas. ( PRECAUTIONS ON MAINTENANCE) ¯ USE GENUINE KOBELCO PARTS Use only genuine KOBELCO parts and oil for replacement and lubrication.

¯ KEEP THE LUBRICANT CLEAN Store the lubricant at the clean place indoors. Prevent dust or water from being mixed in with the lubricant. Use only clean lubricant in which water is not mixed.

¯ KEEP THE MACHINE CLEAN Clean the machine to makeit easy to discover problems, such as oil leakage, cracks, and looseness. Especially clean the grease nipple, bleeder, and oil level gauge(oil inspection window).

¯

USE CAUTION IN REGARD TO THE COOLANT AND OIL TEMPERATURE Donot replace oil, water and filters immediately after the machineis stoppedsince they will be very hot. Wait until the machine cools downto changethem. If the oil, however, is very cool, warmit up first Eto approximately 20-40 °(3 (68-104 °F )-I then disposeof it.

¯ CHECK THE WASTE OIL AND FILTERS After changingthe oil and filters, checkthe wasteoil and replaced filters for the amount of metal chips or foreign materials.

4-1

O

MAINTENANCE ¯ POST THE WARNING TAG Wheninspecting or performing maintenance on the machine, post a "Do not operate" warning tag near the starter switch or control levers.

¯

PREVENT DUST FROM BEING MIXED INTO THE OIL Whenremoving hydraulic hose or components, insert a plug into the connector or port to prevent foreign materials from entering.

¯ KEEP THE MOUNTING FACE CLEAN After removing the O-ring or gasket with a seal, clean the mounting face and replace with a new one. Wheninstalling the O-ring or gasket, apply a thin layer of oil to the seal.

¯

USE CAUTION IN REGARD TO THE INTERNAL PRESSURE Release the internal pressure before removing the hydraulic system, air system, or fuel system; piping or coupling of the cooling system; other related parts to which internal pressureis applied.

¯ USE THE PRECAUTIONS BELOW WHEN WELDING ¯ Turn OFF the power (turn OFF the starter switch). ¯ Disconnect the negative O cable from the battery. ¯ Do not use 200Vor more continuously. ¯ Have the grounding (wire) be within from the welding part. ¯ Makesure that there is no seal or bearing between the welding part and grounding. ¯ DISPOSE OF WASTE OIL PROPERLY Collect waste oil in containers such as oil cans, and disposeof it as industrial wastein accordance with your country’s environmental protection laws.

4-2

MAINTENANCE (RECOMMENDED OIL

VISCOSITY

AND ITS

CAPACITY

(SK25SR)1

¯ Fuel and oil Regardless of the ambient temperature, the types of oil used for the reduction units are given below: Travel reduction units .........

Engine Oil Classification API Service CD SAE30 Unit Name

Hydraulic oil tank

Typeof oil and grease

Hydraulic oil

Radiator (reserve tank)

Engineoil

Dieselfuel

Coolant (LLC)

¯ #g;~i

~,~’~",~KW68 ....j

System 53£ (14.0gal)

I

-KOBELCO KW46 genuine ----- parts

............... .................................... ................................. .........

KW32S

A.P.I classification for "service CD"

L Level 1.2£ (0.32gal) 600cc X 2 (36.6cu.in)

ASTM D-975 Grade 2-D

35£ (9.2gal)

ASTM D-975 Grade 1-D KOBELCO antifreeze (If commercialcoolant is used, the mixing rate of the LLC should conform with the specified.

2.2£ (0.58gal) Total water volume 4.0 £ ( 1.06gal) 45cc X 2 (2.7 Cu.in)

Gearoil

A.P.I classification for "service GL-4"

70ccX6 (4.3cu.in) 80cc x 2 (4.9cu.in)

Front idlers Attachment and dozer blade pin Swing cylinder pin

lubricant

H Level 3.g~ (1.03gal)

Upperrollers Lowerrollers

Specified

Automatic circulation

Travel reduction unit

Fuel tank

Use(depending on the temperature) _22 ° _4° 14° 32° 50° 68° 86° 104°F ° ° _30° .20° _10 0° 10° 20° 30 40°C

36£ (9.5gal)

Slewing reduction unit

Engineoil pan

Capacity (When changed)

Extreme pressure Multipurpose grease NLGI No.2 Lithium base grease EP type

20 places Gtease

Slewing ring

1 place

Track adjuster

Grease

2 places

Stewing gear

Grease

2.5 kg

Cartridge KSPG0420D1 Pail can KSPG1601D1 N.L.G.INo.2Lil~ium basewi~ MOS~ grease

4-3

MAINTENANCE ( RECOMMENDED OIL

VISCOSITY

AND ITS

CAPACITY

(SK30SR)

¯ Fuel and oil Regardless of the ambient temperature, the types of oil used for the reduction units are given below: Travel reduction units .........

Engine Oil Classification API Service CD SAE30 Unit Name

Hydraulic oil tank

Typeof oil and grease

Travel reduction unit

Fuel tank

Radiator ( reservetank)

Hydraulic oil

lubricant KW68

System 53P-

KOBELCO KW46 genuine parts

J.,

,

H Level 3.9£ (1.03gal) Engineoil

Gearoil

Dieselfuel

Coolant (LLC)

Gearoil

A.P.I classification for "service CD*

L Level 1.2£ (0.32gal)

SAE

40

~~

500ccX2 (30.5cu.in)

A. P. I classification for "service GL-4"

35~ (9.25gal) 2.2 £ (0.58gal) Total water volume 4.0£ (1.06gal)

I

1 I I

ASTMD-975 No. 1

_,...........

L__[ ......... !. ~{! 40~’"£LC mixture ~!I

,

t I I I

45ccX2 (2.7 cu. in) 70ccX8 (4.3cu.in)

ASTM D-975 Grade 2-D ASTM D-975 Grade 1-D KOBELCO antifreeze (If commercialcoolant is used, the mixing rate of the LLC should conform with the specified.

A.P.I classification for "service GL-4"

80cc x 2 (4.9cu.in)

Front idlers Attachment and dozer blade pin Swingcyli rider )in

Specified

Automatic circulation

Upperrollers Lowerrollers

Use (depending on the temperature) -22 ° -4 ° 14° 32° 50° 68° 86° 104OF _30° _20° °_10 o 0 °10 °20 °30 40oc

36£ (9.5gal)

SI ewing reduction unit

Engineoil pan

Capacity (When changed)

Extreme pressure Multipurpose grease NLGI No.2 Lithium base grease EP type

20 places Grea se

Slewing ring

1 place

Track adjuster

Grease

2 places

Slewing gear

Grease

2.5 kg

Cartridge KSPG0420D1 Pail can KSPG1601D1 !N.L.G.I No.2Lithium basewith MOS, grease

4-4

MAINTENANCE (RECOMMENDED OIL

VISCOSITY

AND ITS

CAPACITY

(SK35SR)

¯ Fuel and oil Regardless of the ambient temperature, the types of oil used for the reduction units are given below: Travel reduction units .........

Engine Oil Classification API Service CD SAE30 Unit Name

Typeof oil and grease

Capacity (When changed) 35.6£ (9.4gal)

Hydraulic oil tank

Hydraulic oil

Slewing reduction unit

Engineoil pan

Radiator (reserve tank)

Engineoil

Dieselfuel

Coolant (LLC)

Gearoil

-"KOBELCO =:~,:,VG 46 @~KW46 genuine -parts

Attachment and dozer blade pin

A.P.I classification for "service CD"

L Level 1 3£ (0.48gal) 700ccX2 (42.7cu.in) 35~ (9.25gal)

A. P. I classification for "service CD" ~IiN~ASTM

I I I

h’;~i~#~ ~,:~,~ i~ ASTM D- 975No. 1

45ccX2 (2.7 cu. in) 70ccX8 (4.3cu.in)

J.......................... !,........................ /............ <~ ..................

Li................. ..... ~....

Extreme pressure Multipurpose greaseN LGI No.2 Lithium base grease EP type

1 place Grease

2 places

Slewing gear

Grease

2.5 kg

ASTM D-975 Grade 1-D

A.P.I classification for "serviceGL-4" I...................

20 places

Track adjuster

ASTM D-975 Grade 2-D

KOBELCO antifreeze (If commercial coolant is used, the mixing rate of the LLC should conform with the specified.

Gtea se

Slewing ring

D 975 NO 2

2.2P(0.58gal) Total water volume 4.2£ (1.11gal)

80cc x 2 (4.9cu.in)

Front idlers

Swing cylinder 3in

~!..=,:[so

System 51£ (13.5gal)

H Level 4.7£ (1.24gal)

Upperrollers Lowerrollers

isoVG68 Kw68

Automatic circulation

Travel reduction unit

Fuel tank

Use(depending on the temperature) Specified _22° _4° 14° 32° 50° 68° 86° 104°F lubricant _30° _20° _10° 0o 10° 20° 30° 40°(3 i i , i ’~~ t~i~i~.~ ...................................................... ~i

Cartridge KSPG0420D1 Pail can KSPG1601D1 N.L.G.I No.2Lilhium basewi~ MOS, grease

4--5

MAINTENANCE (EXPENDABLEPARTS (SK40SR AND SK45SR) ¯ FILTERS AND ELEMENTS Replaceexpendable parts, suchas filters andelements,during the periodical maintenance or before the wearlimit. Themachinecan be usedeconomicallyif the expendable parts are changed properly.

Filter No.

and Element Lisl

Part

Qty

®

Return filter Hydraulic oil tank PR50V00002P1 (ZD11G12500) (O-ring)

1

®

Suction strainer Hydraulic oil tank 2446R344F1 (ZD11G12500) (O-ring) 129350-12900 (SK25SR.SK30SR) Air cleaner Element 119808-12520 (SK35SR)

® @

Device

Part No.

Engineoil filter

129150-35151

®

Fuel filter

®

Water separator

®

®

Items enclosedin parenthesis( ) are the parts to be changedat the sametime.

Bucket

Cartridge

119810- 55650 (SK25SR.SK30SR) 1291O0- 55650 (SK35SR) Element (O-ring) (24321- 000650) (24311- 000160) (SK35SR ONLY) 171081- 55910 (102103-55520) Element PU69B00002P1 (R.H) (SK25SR) PUS9B00001 P1(L.H) Side cutter (R.H) (SK25SR) PV69B00002P1 (R.H) Sidecutter (L.H) (SK30SR.SK35SR)(Capscrew) PV69B00003P1 (L.H) (SK30SR.SK35SR)(Nut) (ZS18C16035) (ZN18C16013)

Bucket (SK25SR-SK30SR)

PW69B01001P1 Bucket tooth (pin) (PW69B01002P1)

Bucket(SK35SR)

®

Replacement Interval After 50 hours (initial change) Every 500 hours (from 2nd. change)

1

Clean every 2000 hours

1

Whenrequired, after cleaning 6 times or one year

1

After 50 hours (initial change) Every250hours(from 2 nd. change)

1

Every 500 hours

1

When required

1 1 (6) (6) 3 (3) 4 (4)

When required

When required

® ® -® 4-6

MAINTENANCE ( FOLLOW THE PRECAUTIONS BELOWWHEN MOUNTINGHOSES, PIPING, AND JOINTS’) ¯ Be careful not to damagethe hoses, tubes, and joints and prevent foreign materials from entering in them.

Perform dustproof treatment for each part upon necessity. ¯ Clean the hoses, tubes, joints, and surroundings. Removethe cleaning solvent completely and dry them before installing. ¯ Do not use flawed or deteriorated O-rings. If a part is used which has the samedimensions but is madeof different material and has a different hardnessfrom the specified one, this may cause oil leakage or greatly shorten the life of the machine.Use only the specified parts. ¯

INSTALLING HYDRAULIC HOSE AND PIPE JOINT The following two types of joint are used on the joint part of hosepiping.

A. Metal joint

A. Metal joint Press and seal the openingof connector(tee, elbow) and hose. Disassemble and assemble it to protect the damage on the seat surface.

Seal face E!bow

Hose

uo

Sea~~at

(~r

)

B. O-ring seal joint O-ring is equipped with hose fitting which seals the oil pressure on the joint and protects it from oil leakage.

The tightening torque of the joint of each hydraulic hose is determined by the diameter of the hosefitting screws. In case abnormality of somekind is detected, the hosepipe joint should be repaired or replaced according to the following procedure even before the periodic inspection of the unit of hydraulic equipment. ¯ O-RING 1. At reassembling, be sure to replace the O-ring with a newone.

2. Wherethe union is loosened and oil is leaked,nevertighten it as it is. Install a newO-ring and check that the O-ring is securely fitted, and then tighten it.

Never install a damagedand deterio3. rated O-ring even if it is newone. The use of an O-ring other than a normal one contributes to oil leakage and reduces the life of hydraulic equipment because the material and hardness differ evenif they are the samesize. ¯JOINT 1. Care must be exercised not to damage hose, pipe and O-ring groove face and seal face (dent, etc.) of hydraulic equipment. The use of a damaged O-ring contributes to oil leakage.

4-7

side)

B. O-ring seal joint

Connector

O-ring

°

Handleit using care to prevent entry ol dust, etc.

Fitting with foreign matters inside contributes to oil leakage.

¯ HOSE The hose should not be twisted and sharply bent for installation.

Install hose paying particular attention not to twist and sharply bendit.

If the hoseis twisted or sharply bent, the life of the hoseis reduced.

MAINTENANCE (RELEASING THE INTERNAL PRESSURE OF HYDRAULIC OIL SYSTEM Releasethe internal pressure of hydraulic oil and hydraulic systembefore carrying out maintenancework such as hydraulic oil, return filter, suction strainer, cylinder. ¯ RELEASING THE INTERNAL PRESSURE OF HYDRAULIC OIL TANK ~,

Postureof checkinghydraulic oil ~

WARNING

¯ Thereis dangerin the hydraulictank because the insideis heatedto highertemperature and pressurized.Carryout inspectionandmaintenanceafter stopping engineandcoolingthe hydraulicoil.

Bucket

¯ Releasing the internalpressure of hydraulic oil tankbycarefullyloosening the air breatherplug gradually.

~/-~

blade

Hydraulic tank cover

1 . Select the solid and level ground and place the machine in the posture as shownin the figure.

2. Stop the engine.

3. Openthe’cover of hydraulic oil tank, and release the internal pressure of hydraulic oil tank by loosening the air breather plug (~ gradually.

Air

4-8

breather

plug

Dozer

~~~..~

MAINTENANCE ( PRESSURIZINGTHE HYDRAULICOIL TANK After inspection and maintenanceafter releasing the pressure of hydraulic oil tank.

Makesure to pressurize the hydraulic oil tank.

Hydraulic oil tank pressurization posture Bucket cylinder.~~.

1. Start the engine and keep low idling under the condition where the air breather plug @on the hydraulic oil tank is open.

2.

Boomcylinder

~

Extend each cylinder to the stroke end gradually to obtain the "Hydraulic Oil Tank Pressurization Posture".

Checkthat the tank is free from oil leakage, and close the tank cover on the right side of operator’s seat. Movethe attachment and retract the cylinder rod, and the hydraulic oil tank is pressurized.

Gasket @

NOTE: If thehydraulic oil tankis notpressurized, it contributesto the damage of hydraulicoil tank. Make sureto pressurizeit.

4-9

~/___~ Swing cylinder

Blade cylin.d.e:~. ............... ~:::~:~:~:~:~:~

3. Tighten plug @ Tightening torque : 3.0_ 0.3 kgf-m (21.7_+2.2ft-Ibs) 4.

Arm cylinder

MAINTENANCE ( RELEASINGAIR IN THE FUEL SYSTEM) Whenreplacing the fuel filter or whenair enters the fuel system,removethe air by following procedure described below.

1.

Set the safety lever at "LOCK"position, and stop the engine.

2. Fill the tank up.

3. Checkthat the cock of fuel filter "OPEN"position.

4.

is set at

r

rator

Set the throttle lever at "High idling" position. Turn starter on and repeat it two times for 15 seconds, then have the engine cranking.

During cranking, the fuel is fed and the fuel injector starts; and the engine starts immediatelyafter air is released.

or NOTE: Don’toperatethe starter for 15 seconds morecontinuously.

If it is necessary to crankfor 15 seconds or more,stopcranking once,andstart cranking againby setting it at "START" position after approx.30 seconds.

OFF

,,

HEAT x

START \

By moving the priming lever at the side of fuel injection pumpup and down, the fuel is fed while the engine is stopped.

Therefore, release the air beforehand, and the worktime is shortened.

ON

i~~>

P

4-10

MAINTENANCE (LUBRICATION

AND MAINTENANCE INTERVALS

The table below indicates recommendedlu- ¯ Symbols and their meanings: brication, replacement, inspection and main[] ......... Necessaryregular inspection item. tenanceintervals of each device according to the calendar time and operation time shown inspection is per1" ......... Only initial by the hour meter. formed.

Perform inspection and maintenance according to the calendar time or operation O......... Inspection and/or maintenance is time, whichever comesfirst. needed.

See the inspection and maintenance procedure mentionedbelow for details. ~~ Device

Interval Item

Engineoil

~~,,

When Pre- Every operarequired tion week 50h 8h

250h

Every Every Oil & Grease 6 12 2000h (Replacing Reference m on~hs months part) page 500h 1000h

Checking the level

4-22 Engineoil

Replacing Engineoil filter

Replacing

Water separator

Checking/ Cleaning

4-29

iiiiii iiiill

Cartridge

4-30

Element

4-16

iii!i~i~iiii

Cleaning Fuel filter

:: :: ..... :...................

4-31 Element

Replacing

4 -34 !ii!i~l~i~ii !ili~i~i!i;i!ii!i i

Air cleaner element

Checking/ Cleaning

4-14 Element

Replacing LLI Z

z ILl

Radiator coolant

4-14

Checking the level

Tap water (LLC)

!ilili!i ii!!!;! !!iii;iii! !ili!ili!i

Replacing Checking

4-22 4-36 4-23

Fan belt Adjusting

4-32

Radiator fin and oil cooler

Cleaning

4-15

Radiator cap

Cleaning

4-15

Radiator hose

Checking

iiiiiiill

i!!iiiiiiiiiiiiiiiiiiii!i!ii!ii!i!~

4 -32

Checkingthe color of exhaust gas

4-23

Valve clearance

Checking/ Adjusting

4-37

Compression pressure

Checking/ Adjusting

4-37

4-11

MAINTENANCE J~

ere-

Interval

Wher opera retion qulre~ 8h

Devic Item Injection timing

Checking/ Adjusting

Injection nozzle

Checking

uJ z z uJ

-JLJJ LJJ

u_>-

Stater and alternator Fuel tank

¢/3

Fuel

Checking the levek

4-37 4-35 :;:,L;:,. .......... ii~ii!~:,~!;ililiiiii~rili!;i~

ii!!iiiil!iiii!iiiii~ili;i~il;;Zl !i~!!!iii!i~iiiiiiii!ii~ii ii;iiiiii~:~iiiiiii~iiii~ili~ iiii~iiii!ii!!i!!ii!iii!ii~iiiiiii!i

i~!ii;i;i;~;iii!~;i;iii!iiiii ::.:’.

Return filter

Replacing

Checkingoil leakage and damageof cylinders

rr ~; Slewing ring uJ a.< o_ rr Grease in the :D LL grease bath Travel reduction lubrication oil

iii!~ii[iiii ~lili~iiiiiii!ii;;iiiiiii;~ 1,2~:2:I:2~2::~:P:52YY;Y:!g?2:!!:2: r ........

i!iii:i;i:i:i::;

O

4-23

i!;ii!i~i!i!i!iii!!iii!!iii!iiiiiiiiiii

4-38 4-39

E lement

~:1rs1;

4-35

:::": ..............

!ilililili~ii!ii!i!iiiiiiiiiiiiil ....

if!!!

Cleaning

4-42

Greasing

.............. i iii~ii

Replacing

G rease 4-33 ~ !!~!!~!!!!!i~!!!!!!!!!!!! ..,.,

ii[i!iiii~:l"~iii

Replacing

N.L.G.I Noo2 Lil~iumbase 4-41 MOS= grease Engine oil 4-40~ 4-41

::ii:i.iii ii:i i~ii!~

Checkingoil leakage and damageof the rollers

4-24

<rr Checking oil leakage and EL damage of the idlers n" LU

4-25

Hydraulic oil

Replacing Cleaning/ Replacing

Inline filter

4-24

iiiiiii!;!ii~Fiiii;i~ii~i!ii;i!i

Checking the lave

Suction strainer

4-37

i i;!! iiiii!!i!i!iiiii;

Draining water and deposits

Checkingoil leakage and damegeof pipings and hoses

,,,

Oil & Grease ! 2000h (ReplacingReference part) page

250h

Checking/ Adjusting

Hydraulic oil Hydraulic tank

:ver, week 50h

4-24

Checking wear of the sprockets

4-24

Checking wear of the rubber shoe

4-24

.J

Track tension

Adjusting

Attachment pins

Greasing

G rease

Replacing

iiiii!iiiiii!iiiiili .................. ii~ii!

4-26

i!;~iii!:lli~i:ii

4-33

!::i/2::: ...........

z uJ I o < F<

Bucket

Adjusting the mountgap

4-20

Checking wear and damageof the tooth and side cutters Checking damageof the capscrew preventing pins from coming off

4-17

4-184-19 !!!~!!!~i!! .............

4--12

4-24 iiii iiii h,i,,HI

MAINTENANCE Interval

When ! opera.

Device Item

Battery

dz BILl 5 .J

O

WW

~

required

tion 8h

Oil & Grease C ReplacingReference part) page

Checkingthe fluid level

4-27

Measuringthe specific gravity

4-28

Checking damageof the electrical wirings Checkingthe function of the gauges, switches and lamps

4-24

Checkingthe function of the monitor panel

4-24

Checking abnormal deformation and damageof the machineexterior

u~ c¢ w Checking looseness and missing of T the capscrews and nuts O Checking Wiper washerfluid the level

4-21

4--13

MAINTENANCE WHEN REQUIRED 1

SK25SR.SK30SR

Thoroughly read and understand the section SAFETY OPERATIONof this manual before operating or servicing the machine. ¯ CHECKING THE AIR CLEANER ELEMENT

~WAfir

cleaner housing

-

Wearprotective glassesor goggleswhenusing compressed air.

NOTE : Stopthe enginebeforeinspecting or cleaning the air cleanerelement.This will prevent the enginefromgettingdamaged dueto dust.

Cleaning .........

A warning appears on the Monitor panel

Replacement ......

After 6 times cleanings or once a year

i SK25SR.SK30SR ~

[SK25SR ¯ SK30SR~ ¯ CLEANINGTHE AIR CLEANER ELEMENT 1. Openthe engineguard,disengagetwo clips ~1~ on the air cleaner, andremovethe cover~.

2. Takeoff the baffle ~ from the cover~2~, and cleanits inside.

3. Loosenoff the wingbolt ~4~by hand,andtake out the element~ fromthe air cleanerhousing.

4. To clean up the element(~, blow out it from the inside with compresseddry air with 2 (185psl)alongthe pressureless than 3kgf/cm pleat, then blowout it fromthe outside. Again blowout it fromthe inside.

Alsocleanthe inside of air cleanerhousing.

OATTACHING THE AIR CLEANERELEMENT 1. Attach the elementthat is cleanedor replaced to newone, into the air cleaner housing, and tightenit with the wingbolt ~,~securely.

Tighten the wing bolt with handonly without usinganytools.

2. Install the baffle ~ to inside the cover~, and install it to the air cleanerhousingmakingthe "TOP"markupper. Securelylock the clips ~.

4-14

"-<j ,,)

MAINTENANCE ~SK35SR~ ¯ CLEANINGTHE AIR CLEANER ELEMENT 1. Openthe engineguard, disengagetwo clips on the air cleaner,andremove the cover(2~.

2. Cleaninside the cover~.

3. Takeout the element~ from the air cleaner housing.

4. Carry out the sameproceduresmentionedin (SK25SR.SK30SR).

i SK35SR

¯ ATTACHING THE AIR CLEANER ELEMENT 1. Insert the element~ that is cleanedor replaced to newone, into the air cleaner housing, and installit.

2. Makingthe "TOP"mark on the cover ~ upper, install it to the air cleanerbody.Securelylock the twoclips 1~.

¯

®

CLEANING AND REPLACING THE RADIATOR CAP CAUTION Useextremecautionwhenremoving the radiator cap.When the radiatoris hot, the coolantis under pressure. Neverremovethe radiator cap when radiatoris hot, always allowthe radiatorto cool down.

1. Wait until the cap has cooled downenough to where it can slowly. After confirming that pressure has been released, push the cap down and hold it down while turning to remove.

2.

Check the cap for damageor adhesion of foreign material. Clean the cap with a clean cloth or replace as required.

3. Install the cap. ¯

CLEANING THE RADIATOR FIN OIL COOLER

SK35SR

AND

Wearsafety goggleswhenusingcompressed air.

NOTE ¯ ¯ High-pressure air/tap water can damage the fins ; therefore,spraywiththe nozzle at least 500 mm fromthe fins. ¯ Cleaning interval...... Every500hours

4-15

MAINTENANCE ¯ DRAINING WATER FROM THE WATER SEPARATOR The water separator isolates water that mixes in with the fuel. The case is equipped with a float.

Whenwater accumulates, the float rises.

Whenthe float rises to the level line, drain the water.

WaterSeparator

Cleanupall spilt fuel to avoida fire.

Loosenring (~ and removecase ®, then discharge the accumulatedwater in reservoir.

NOTE: Caremustbe exercisednot to miss the red float (~ andspring (~.

1.

Wat

Removeelement ~ and wash and clean it with light oil.

’er~

2. Replace o-ring (~ with a new one.

3.

Install element ~ on the body of water separator.

4.

Fit O-ring (~ on case (~, and secure with ring (~j).

5.

Direct the cock @downwardto open.

After draindown, makesure to release air in the fuel system seeing Page4-10

NOTE: It is strictly prohibitedto washandcleanit with gasoline.

J

4-16

MAINTENANCE ¯ REPLACING THE BUCKET

Change the bucketon a flat place. When working togetherwithsomeone else, exercisesafetybygiving signsor signalsto eachother.

When insertingthe pins into the pin holes,never insertyourfingersinto the pin holes. ¯ REMOVING THE BUCKET 1.

Select a flat surface and stabilize the bucket on the ground.

2.

Movethe O-rings (~ of the pin from its normal position to the bucket bosses.

3.

Removethe spring lock rings (~ and lock pins ~ and pull out the pins (~ and (~ ; then remove the bucket ®. Dust seals are inserted at both the edges of the pin holes of the arm ~ and bucket link®. Do not damagethem.

¯ INSTALLING

\\ \\

THE BUCKET

1.

Clean each pin and pin hole and grease sufficiently.

2.

Movethe bucket cylinder to match the pin holes of the bucket ® and bucket link ® with each other ; then insert the pin (~.

Bucket boss

3. Lift the boom up to raise the bucket slightly from the ground.

4.

®

Movethe arm (~ to match the pin holes of the bucket ® and arm ~ with each other ; then insert the pin ~,

5. Insert the lock pin ~ and attach the spring lock rings (~. Fit the O-ring (~ into the normal position.

6.

Apply grease to the bucket link from the grease nipples sufficiently.

4-17

MAINTENANCE ¯

CHECKING

THE TOOTH POINTS

Put the bucketwith a block to replace the tooth pointsandside cutters.

Check for wear and looseness of the bucket tooth points. Tooth point life cannot be determined only by the number of operating hour; operating conditions must also be considered.

NAME OF PARTS: (~ Tooth point (~ Adapter nose

¯

REPLACING

~2~3mm(0.08~0.12,n)"

""-.-" "" 8~10rnm "" ~- (~.311Lm~39,n)

Sandwich pin

THE TOOTH POINTS

Replace the bucket tooth in the following cases. ¯ When little holes appear on the tooth point. ¯ Whenthe edge lines of the tooth point are worn.

Safety

1. Put the bucket on a safety block (woodenblock) so that the pin of tooth can be struck through, makingthe tooth parallel with the ground.

Put the lock lever of taking on/off shut down 2. type to "LOCK"position, then stop the engine.

3. Strike through the sandwich pin @with the striking through tool and hammer.

4. Check for the sandwich pin struck through.

Replacd it to new one whenit has any defects on the rubber such as snapping off or distorsion. Otherwise it maycause for coming off of the tooth while operation.

Clean inside the tooth point ~, and insert it into 5. the adapter nose @.

If somedirt remainsinside the tooth point ~, it causesfor difficulty to insert it into the adapter nose@sufficiently.

Drive the sandwich pin ~ into the bore up to 6. the level with the surface of tooth point ~.

4-18

~~Hammer bl~ Punching "~ " Tooth point

Snappedoff

Distorted

tool

MAINTENANCE ¯ REPLACING THE SIDE CUTTERS 1. Completely removeall sand and soil adhering around the capscrews completely. Use an acetylene torch to cut off the capscrews, then removethe side cutter.

2.

Clean the mounting face and install a new side cutter. Whenreplacing the side cutter, replace the capscrewsand nuts with newones.

Safety

Capscrew

Tightening torque : 29 ___ 2 kgfom (209.8_+ 14.5ft¯ Ibs 3. After tightening the nuts, spot-weld them.

N

~i’i~ideCutters-"f"~

¯ TURNING OVER THE BUCKET Reverse the backhoe bucket; then install onto the machinein order to use the machine as a face shovel.

1.

Lower the bucket onto level ground to stabilize.

2.

Removethe spring lock rings, bucket, pins and link pins. Pull out the bucket pin (~ and link pin ~.

3.

Lift up the armslightly and reverse the bucket; then lower the arm again. The pin hole positions are changed.

4.

Clean the pins and pin holes of every part and apply a sufficient amountof grease.

5.

Align the pin holes with eachother, then insert the pins. Install the spring rings and pins.

Bucketface shovelingis oppositeto that of backhoeing.

Becareful not to confusethe operations,

4-19

MAINTENANCE ¯ ADJUSTING THE BUCKET MOUNT GAP Bucket clearance adjusting mechanism

Set the safetylever to the lockpositionandstop the enginewhenadjustingthe clearanceof the bucket.

CAUTION If the clearance of the bucketis notproperlyadjusted, galling mayoccuron the contactfacesof the bucketandarm,resulting in abnormal noise anddamage of the shaft andO-ring.

Standard clearance of the bucket (~)

0.5mm(0.02in)

Lower the bucket onto the ground to stabilize, as shownin the right figure.

1.

Bucket

bos~ t ,

,

,,~~

I

Movethe O-ring (~ from its normal position to the bucket boss.

2.

°

Slightly rotate in the left direction to slightly push the arm end to the bucket left side (where no clearance adjusting mechanismis equipped).

4.

Set the safety lever to the lock position; then stop the engine.

5.

Measure the clearance@ between the arm and bucket boss. If the measurement value is 1.0 (O.04in) or more,adjust the clearance.

Before adjustment

I

2.0 mm(0.08in) °

,

Sixshims@0.5mm(O.O2in)on the average are inserted in the three capscrews(~ at the clearance adjusting part. Loosen every capscrewsand removeshims in the clearance.

After adjustment

Tighten the capscrews(~) equally to the specified tightening torque.

1.0mm 1.0ram (O.04in) (O.04in)

Tighteningtorque¯ 5.6kgf" m(40.5ft. Ibs) 8.

Return the O-ring (~ to the normal position.

4-20

I

MAINTENANCE ¯ CHECKING AND REPLACING THE WIPER BLADE Inspect thewiper blade. Replaceif it is worn or" damaged.

Wi

¯ REFILLING WASHERFLUID (CAB SPEC.) Cap NOTE: If the switchis operatedwhenthere is no washerfluid, the washertank motormay become damaged.

Washertank

The washer, tank is installed behind the oper’ator.’s seat, on the right handside.

1.

Checkthe washer,fluid level in the washer. tank.

2.

If the washer,fluid level is low, remove the cap and refill with washer,fluid for automobilesor tap water..

4-21

--

Motor

MAINTENANCE (8-HOUR (DALLY)

INSPECTION

AND MAINTENANCE)

Thoroughly read and understand the section, erating or sevicing the machine. ¯

SAFETYOPERATION of this manual before op-

CHECKING THE COOLANT LEVEL 1. The reserve tank for the coolant is located on the right rear side of the machine.

2. Thecoolant level should be betweenFULL and LOWin the reserve tank (~. If the coolant is LOW, remove the reserve tank cap and refill with coolant. Use soft water such as tap water which not generate incrustaion, as coolant.

3. If the reserve tank is empty,refill with coolant from the radiator side. At this time, loosen the radiator cap slowly.

After confirming that the pressure has been released, push the cap down and hold it downwhile turning to remove.

WARNING Usuallydonot openthe capon the radiatorbody.

Particularlyneveropenthe capimmediately after operation.Otherwise hot waterspraysout andis dangerous.

¯ CHECKING THE ENGINE OIL LEVEL NOTE:¯ Level the machine before performingthe inspection. ¯ Avoidoverfilling the oil pan. Excessive oil maycausethe engineto malfunction. ¯ Beforestartingthe engine,checkthe engineoil level. ¯ After operatingthe machine,checkthe engineoil level about30minutes after the enginestops.

1.

2.

3.

4.

5.

Unlock the hood lock and open the engine guard.

Pull out the level gauge (~), and completely wipe off the oil adheringto it. If the oil level is betweenthe H and L, the level is sufficient. If oil is extremely contaminatedor deteriorated, changeit regardless of the periodical changeperiod.

Iftheoil level is low, refill with engineoil from the filler cap (~. After fill-up, checkthe oil level again.

Wipe off the filler cap (~ completely; then attach it.

Close and lock the guard.

4-22

Radiator

FuLL,,

MAINTENANCE ¯ CHECKING THE FAN BELT Checkthe fan belt for insufficient tension, wear, and damage.If the belt tension is insufficient, this maycause battery charge failure, overheating of the engine, or abnormal belt wear. If too muchtension is applied to the belt, the bearings or belt maybecome damaged. See the section, MAINTENANCE (EVERY250 HOURS)for details on the inspection and adjustment procedure for the belt.

~. 10kgf (221b)

".../!To;22o;’, /

~

Belt

¯ CHECKING THE COLOR OF EXHAUST GAS After the engine has fully warmedup, check the color of exhaust gas. ¯ Colorless of faint blue ... Good ¯ Black ...

Bad, indicates incomplete combustion

¯ White... Bad, indicates oil getting into the combustion chamber Supplementary explanation: Pleasenotethat the exhaust gaswhichis really colorlessor faint bluewill lookwhitedueto the coldness of winter.

¯ CHECKINGTHE HYDRAULIC OIL LEVEL 1.

Hydraulicoil level checkposture

The hydraulic oil tank is located on the right side of the machine. °

°

Set the machineto the hydraulic oil level check stance (as shownin the right figure) on the level and solid ground; then stop the engine.

Bucket

n

~

.,~/~--..~

~,~

~

Dozer blade

/ ~-- f~

Checkthe oil level with the level gauge ~) on the side face of the hydraulic tank. If the gaugeindicates that the oil level is between H andL, oil is sufficient.

Theoil level changesaccordingto the oil temperature. Thus, check the oil level according to the guideline below.

~’~~ /i Hydraulic

too oo.r

¯ Before operation : Around L level I" The oil temperature is 10-30 °C (60-86 °F). ¯ During normal operation : Around H level l- Theoil temperatureis 50-80°C (122-176°F).

,ovo,,au o

15t,,-°, 4-23

MAINTENANCE O CHECKING THE FUEL LEVEL OFF

FUEL

Always stopthe enginewhenaddingfuel.

¯ A fire or explosionmayoccurif a mixedfuel suchas gasoline andalcoholis used. ¯ Do not allow contamination or water to mix into the fuel when adding fuel.

E

,

ON

, .

o

Place the machine on level ground; then checkthe fuel level with the indication on the monitorpanel shownin the right figure.

If the fuel level is low, use the starter key to removethe cap (~.

2. Supply fuel through lubricating port.

The float comesup to the port when the level reachesto full. Stop supplying immediately after the float (~) comesup.

Fuel tank capacity : 35 ~ (9.2gal) 3. If foreign matter such as dust, etc. is caught on the strainer ~) fit it again on the filter port after cleaningwith light oil or blowing with air gun.

4. After supplying, tighten filler cap securely.

Lock the key and finish the work.

KEY

1.

KEY

each NOTE: Refill withfuel at the endof operation day. (This decreases the air in the tank, thus, preventingthe formationof water dropsafter cooling.) ¯ CHECKING OIL LEAKAGE AND WEAR AND LOOSENESS OF THE CAPSCREW IN THE LOWER FRAME ASSEMBLY 1. Checkthe upperroller, lowerroller, idlers, and travel reduction unit for any oil leakage.

2. Check the upper roller, lower roller, rubber shoes, and sprocket surface for any abnormal wear, and the mounting capscrewfor looseness.

3. Operate the lower frame assemblyslowly in a wide area to check for abnormal noise.

4. If any abnormal wear, abnormal noise, or oil leakage is discovered, contact your KOBELCO distributor.

Fuellevel R m

/

)

’ ~I"~(F)(E)(D)

¯ CHECKINGTHE FUNCTIONOF THE GAUGES, SWITCHES,LAMPSAND MONITORPANEL After warm-upoperation, check the operation conditions of the switches. If any malfunctions are discovered, contact your KOBELCO distributor.

4-24

A Travelreductionunit

D Rubbershoe

B Sprockets

E Upperroller

C Lowerrollers

F Idlers

MAINTENANCE 50-HOUR (WEEKLY) INSPECTION AND MAINTENANCE Thoroughly read and understand the section, SAFETYOPERATION of this manual before operating or servicing the machine.

Perform together with 8-hour (daily) inspection and maintenance. ¯ DRAINING WATER AND DEPOSITS FROM THE FUEL TANK --Fuel tank /

Always stopthe enginewhenaddingfuel.

Cleanupall spilt fuel to avoida fire.

Water is deposited at night, so draining before starting the engineis effective.

1.

Slew the machineso that the drain plug (~) under the fuel tank is between the right and left crawlers.

2.

Put the drain fuel container under the drain plug q~).

3.

Loosendrain plug (~) slowly. Drain the accumulated deposits and the contaminated water together with fuel.

At this time, use care to prevent splashing of fuel.

4.

After clear fuel is discharged, tighten the drain plug (~.

NOTE: After tighteningdrainplug,check that it is free frompossible fuel leakage.

4-25

MAINTENANCE O ADJUSTING THE CRAWLER TENSION ¯ ADJUST EVERY 50 HOURS (AFTER 30 HOURS THE FIRST TIME) Proper adjustment of the rubber crawler tension is essential for extendedservice life of the crawler and the travel motor.

Joint mark M

NOTE: Cleanthe machineand completelyremove anysoil adheringto the crawlerbeforeinspectingor greasing, 1.

Washthe area around the crawler, then place the machineon the level ground.

2.

Lift the machine body by meansof the attachment and the dozer blade.

3.

Measurethe clearance "A" between the bottom of the frame and the tread at the center of the frame length.

STANDARD f Dimension CLEARANCE "A" 60~70mm(2.4~2.8in)(Rubber crawler) (SK25SR) (,SK35SR)(SK3OSR) I 118~128mm(4.6~5.0in) (Steelcrawler)

!:!!!iii!iiii i!iii!i iiiiiii!iiiiiii iii!i !iiiii!iii ii!iiiiiii ii!!iiiiiiiiii!i iiiiiiiiiiiiiiiiiiiiiii !ii!iiiiiiiiiiiiiii!ii Therubbercrawlerhavea joint (marked"M’).

Bringthe joint at the top centerof the frame.If this is notdoes,the shoe will betooloose,andreadjustingwill benecessary.

Rubber crawler -~

Crawler frame

¯ TIGHTENING THE TRACK TENSION In casegreasedoesnotcome out evenif the grease nipple is loosened,there is something unusual.

Contactyour KOBELCO distributor for repair.

Neverdisassemble the unit by yourselfas it is dangerous.

1.

Tension can be applied to the track link by greasing the grease nipple (~ of the track spring on the lower frame with a grease gun.

2.

Travel forward and backward to equalize the pressure. Check the tension of the right and left track links equalized.

3. Check the tension of the track again. Adjust as required.

I Steel I ;- crawler

link

4-26

MAINTENANCE ¯ LOOSENING THE TRACK TENSION Because highpressure is appliedto the greasecylinder, greasemayspoutout whenthe greasenipple is loosened,causinga seriousinjury. Keep yourface awayfromthe greasenippleandloosen it gradually.Thegreasenipplemayspringoutbecauseof the internalhigh-pressure grease.Donot loosenthe greasenipplemorethanonerotation.

1. To discharge the grease, rotate part @ of the grease nipple (~ not more than one turn.

2. If grease does not discharge sufficiently, lift up the crawler to be loosened and rotate the track slightly.

3.

Greasecylinder

Pressure

Whenthe track tension is properly adjusted, tighten the grease nipple (~.

Tightening torque : 6 + 1 kgfom (43+7ft.Ibs)

¯ CHECKING THE BATTERY FLUID LEVEL ,~ WARNING ¯ Wearprotectiveglasses,a long-sleeve shirt, andgloveswhen handlingthe battery.

Indicator indications Blue

¯ Thebattery generatesflammable hydrogen gas whichmayexplode.Keepfire andopenflames awayfromthe battery.

Good

Refilling required

¯ Batteryfluid is hazardous liquid. Donot let batteryfluid contactyoureyesor skin. If this shouldoccur,rinse themthoroughly with clean waterandconsulta physician immediately. ,

2.

3.

White

Red

Charging requ i red

Fluid plug (~ ,~

The indicator showsthe state of charge of the battery and fluid level. DONOT use solvents like gasoline and thinner to clean off the indicator or the indicator surface may be cracked or become clouded.

Removethe fluid plug ~. If the battery fluid level is not up to the specified level (10~15u/O.4~O.6in above the plate) add distiller water until it reaches the specified level.

Clean the air hole of the fluid plug (~ and tighten the fluid plug firmly.

10-15mm _-_-

n~

..........

I (Upper

(L°werlimit) --_-_,-_-_’_-_-_-_,-I .........

-~~

Supplementary explanation: Cleanthe batteryterminalsandapplygreaseor lubricantrust-preventive spray.

limit)

Plate

-I-II <E,oot oae> 4-27

MAINTENANCE ¯ MEASURING THE BATTERYFLUID SPECIFIC GRAVITY The specific gravity of battery fluid changes according to fluid temperature. Keep its specific gravity within the range shownin the right figure. If the specific gravity is below the lower limit (small value), charge the battery. ¯ Specific gravity of battery fluid : 1.28 (at fluid temperature20°(3 168° F) NOTE: Donot measure the batteryfluid’s specific gravityimmediately after operation.Measure it when its temperature becomes equalto the ambient temperature.

¯

PRECAUTION FOR THE BATTERY IN COLD REGIONS 1.

Be awareof the battery temperature. If the temperature should go down, the battery may freeze and its capacity may drop extremely.

2.

After battery fluid has been added or, whenthe specific gravity is very low, charge the battery immediately.

4-28

Battery specific gravity

\

20~

I

I

Allowablerange

O~

32=1:

\ 1.21

1.22 1,2| 1,24 1.25 1.26 1.27 1.28 1.29 1,30 I.]1

J,IBettery emperature Battery specific gravity

I

\ 1.32

MAINTENANCE I 250-HOUR (3-MONTH) INSPECTION AND MAINTENANCE Perform together with 8-hour, 50-hour and 120-hour inspection and maintenance.

Thoroughly read and understand the section SAFETYOPERATION of this manual before operating or servicing the machine. ¯ REPLACING ENGINE OIL

Eachunit will be hot immediately after the machinehasbeenoperated.

Changethe oil after the temperaturehas decreased.

NOTE: ¯ Checkthe wasteoil. If there are metal chipsor powder mixed in the oil, contact your KOBELCO distributor. ¯ Replace the engineoil after the first 50 hoursof operation. ¯ When replacing the engineoil, replacethe engine oil filter aswell.

1.

Loosenthe four capscrewson the cover under the engine.

2.

Place a container under the engine into whichthe oil will be drained.

3. Removethe drain plug ® slowly and drain the oil into the container. Be careful not to pour oil on yourself.

4. Tighten the drain plug ® securely.

5.

Remove the oil filler cap (~ and fill the specified engineoil. ¯ Oil volume to be replaced SK25SR. SK30SR...3.9£ (1.0gal) SK35SR ............... 4.7~(l.2gal)

with

Seethe section (page4-3, 4-4 and4-5) for RECOMMENDED OIL VISCOSITY AND CAPACITY. 6. Check the oil level with the oil level gauge~), then start the engine. Idle the engine for few minutes, then stop it.

Checkthe oil level after about 10 minutes. If the oil is low, fill with the specified engineoil.

7. Install the under cover in its proper place.

4--29

®

MAINTENANCE ¯ REPLACING THE ENGINE OIL FILTER

Radiator cover @\

Open

Latches ~----,..~~ Eachunit will be hot immediatelyafter the machine hasbeenoperated.

Change the filter after the temperature hasfallen.

NOTE: ¯ When replacing the engineoil filter, placethe engineoil as well.

Engine(~J guard \,

F I~

re-

¯ Theoil filter cannotbe reusedbecause it is a cartridgetype. ¯ Replace the returnfilter after the first 50 hoursof operation.

Openthe engine guard (~ and radiator cover (~ of the machine.

1.

NOTE:

¯ Alwaysstop the enginewhenopeningthe covers.

¯ Whenopening the covers, open engine guard(~ then openradiator cover(~). ¯ Whenclosing the cover, secure the 2 latchesof radiator cover(~ thenclosethe engineguard(~). ¯

.

.

Engine oil filter

Use the filter wrench (~ to removethe oil filter and replace it with a newone.

Clean the filter base. Apply clean engine oil to the newoil filter seal face.

Tighten the filter two-thirds rotation.

Start the engine and idle the engine for a few minutes. Checkthe filter mounting face for any oil leakage.

Apply engin oil

4-30

/

" LIt

/ ’~

I

~..~/ se T°~

MAINTENANCE ¯ CLEANING THE ENGINE FUEL FILTER

Eachunit will be hot immediately after the machinehasbeenoperated.

Change the filter after the temperature hasfallen.

Clean upall spilt fuel to aboida fire.

Prepare oil container 1. Stop the engine, and open the engine guard.

2.

Set the cock of fuel filter at "CLOSE" position. And removethe retaining ring ~), and take cup case (~ and element (~, and spring (~ out.

3.

Drain dust and water accumulated on the bottomof cupcase(~ of fuel filter in the preparedoil container, and clean it.

4. Wash and clean the element © with light oil, and blow off the compressed air,2-3kgf/cm 2 from the inside to removedust. andclean NOTE: It is strictly prohibitedto wash element withgasoline.

5.

Before fitting fuel filter in the reverse procedure shownin the item (~, replace O-rings ~ and ~ on the body seal surface.

6.

Releaseair referring to article "Releasing air in the fuel system"in Page4-8.

7. Checkthat the filter fitting section is free from possible fuel leakage, while running engine at idling for several minutes after starting engine.

8. Close the engine guard.

4-31

(~ O-ring for SK35SR ONLY

MAI NTENANCE ¯ CHECKING THE FAN BELT TENSION The engine is provided with an alternator belt. Checkthis belt for wear, damage,and insufficient tension to maintain high performanceand long life. Adjust or replace as requ i red.

Pressthe center of the belt with your thumb to check the belt tension, If deflection is about 8~12mm (0.3~0.5in) , the adjustment is proper. ¯ ADJUSTING THE FAN BELT TENSION 1.

Loosen the mounting capscrew (~) and alternator bracket capscrew(~) to adjust the tension of the belt.

2.

Insert a wrench handle to movethe alternator. Adjust the belt to the specified tension.

Wrenchhandle

~

3. Tighten the capscrews (~ and (~.

4.

(

After adjustment, operate the engine at low idle for 5 minutes ; then check the belt tension again.

¯ CHECKING THE RADIATOR HOSE Replacing the hoses before any problems occur is both economical and good maintenancepractice.

This will reduce costs and minimize unexpected interruption of operation.

Immediatelyreplace the hoseif it is cracked, worn, or if water is leaking from it. This will prevent serious problems, such as the engine overheating.

1.

2.

¯

Block

Checkthe hoses for water leakage due to loose clamps or cracked and worn hoses.

£

ReserveTank

I

Tighten any loose clamps and replace any cracked or worn hoses following the procedure below.

REPLACING THE RADIATOR HOSE 1.

Loosenthe radiator cap slowly. Confirm that pressure has been released. Push the cap down and hold it down while turning to remove.

2.

Drain the coolant from the hose to be replaced until the coolant level becomes low.

3.

Loosen the hose clamp and disconnect the damagedhose ; then replace with a new one.

4-32

Useextremecautionwhenremoving the radiator cap.When the radiatoris hot, the coolantis under pressure. Neverremovethe radiator cap when radiatoris hot, alwaysallowthe radiatorto cool down.

MAINTENANCE ¯ GREASING THE ATTACHMENT PINS Set the machine to the greasing posture shownin the right figure, and wipe off all of the grease nipples, before greasing.

Greasing posture ~.

Bucket

._= lozer

The grease gun is set in the tool box.

NOTE ¯ Ourrequestto the userwhenapplygrease: In ordinaryoperation,applygreaseevery 250hoursof operationor everysix months, butunderspecialconditions, observe the followinglubricationintervals¯

C’#/

operatingthe machine with a spe1. When cial attachment, applygreaseeveryday beforestartingwork. diggingoperation,apply 2. Forunderwater greaseto the areasto be immersed in watereverydaybeforeandafter work. is restedfor more 3. Wherethe machine than one month,apply greasebefore work.

No.

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Greasing points Q’ty Blade cylinder rod pin Blade cylinder foot pin 1 Dozer foot pins 2 Boomfoot pin 1 Boomcylinder foot pin 1 Boomcylinder rod pin Arm cylinder foot pin Arm cylinder rod pin 1 Boom/Armconnecting pin 1 Bucket cylinder foot pin 1 Bucket cylinder rod pin 1 Link pin 1 Link pin 1 Bucket link pin 1 Arm/Bucket connecting pin 1 Swingcylinder foot pin 1 Swing cylinder rod pin 1 Swing bracket/frame connecting pins 2

@

¯ GREASING THE SLEWING RING The slewing ring is provided with one grease nipple. Clean the grease nipple. Rotate the upper frame assembly in 90° intervals in order to grease all four portions.

4-33

MAINTENANCE 500 HOUR (6-MONTH)

INSPECTION AND MAINTENANCE

Perform together with 8 to 250-hour inspection and maintenance.

Thoroughly read and understand the section, SAFETYOPERATION of this manual before operating or servicing the machine. ¯ REPLACING THE FUEL FILTER

Radiator cover (~ ,~

,ne, :gu f

Spilt oil maycausea fire. Wipeoff anyspilt oil completely.

1.

Latches ~---,.._~~

Open the engine guard and radiator cover of the machine.

NOTE:¯ Alwaysstop the enginewhenopeningthe covers. ¯ Whenopeningthe covers, openengine guard(~ thenopenradiatorcover(~. ¯ Whenclosing the cover, securethe 2 latchesof radiatorcover(~) thenclosethe engineguard(~).

I

2. Put fuel container under the fuel filter.

3.

Set the cock @of fuel filter at "CLOSE" position. And removethe retaining ring (~), and take the element (~ out of cup case q~. At this time, care must be exercised not to miss the spring which is placed in the cup case.

4.

Replace element © and O-ring with new ones.

5. Install them in the reverse procedure shownin the item 3.

6.

Releaseair referring to article "Releasing air in the fuel system"in Page4-10.

7. Checkthat the filter fitting section is free from possible fuel leakage, while running engine at idling for several minutes after starting engine.

(~) O-ring for SK35SR ONLY

8. Close the engine guard.

4-34

Open

MAINTENANCE ¯ REPLACING THE HYDRAULIC RETURN FILTER The return filter keeps the hydraulic oil clean by removing any foreign material that maybe in the oil. This will prevent the hydraulic equipment from becoming damaged and prolong the machine’s life. Thus, since the return filter is a very important part, handle it with due care.

¯ Beforeservicingthe hydraulicsystem,release the pressure in the hydraulic oil tank. ¯ Theoil temperature is very hot immediately after the machine hasbeenoperated.

Replace the returnfilter after the oil temperaturehasfallen.

NOTE" Replace the returnfilter after the first 50 hoursof operation.

1.

Place the machineon the level ground, lower the bucket to the ground and stop the engine.

2.

Removethe cover (~ on the hydraulic tank.

Slowly loosen plug (~ and release the pressure from the hydraulic tank.

3.

4.

Removethe capscrew ~, spring washer ~, and cover(~ on the upper face of the tank.

5.

Remove the spring ®, valve (~, and element (~ out of the tank.

6.

Checkthe O-ring (~ on the cover mounting face and replace if it is worn or damaged.

7. Install the elements according to the above-mentioned steps 4 and 5 in reverse.

8.

Install the hydraulic tank cover in its proper place.

¯ INSPECTIONANDADJUSTMENT OF INJECTION PRESSUREAND SPRAYINGCONDITIONSOF FUELINJECTIONNOZZLE Contact your KOBELCO distributor spection and adjustment.

for in-

4-35

®

MAINTENANCE (1000-HOUR

(12-MONTH)

INSPECTION AND MAINTENANCE

Performtogether with 8 to 500-hour inspection and maintenance.

Thoroughly read and understand the section, SAFETYOPERATION of this manual before operating or servicing the machine.

S REPLACING COOLANT

Keepthe coolantawayfromfire andopenflame: it is flammable.

Use clean soft water such as tap water which will not generate deposits for coolant.

Water may cause corrosion, depending on the engine operation temperature. Use coolant which contains 40°,% or more of LONG LIFE COOLANT to prevent the cooling system from corroding or freezing.

Radiatorcap

The ratio of LONGLIFE COOLANTto be added to the cooling system should conform with the expected lowest ambient temperature. Whenthe machine is shipped from the factory, coolant which contains LONGLIFE COOLANT is used as shown below.

Freezingresistance temperture

LONGLIFE COOLANT (mixingratio)

-14.5 °C(-5.9 °F) -34 °C(-29.2 OF)

40% 50%

contamiNOTE: Replacethe coolantif it becomes natedor bubblesappear. ~,

CAUTION

Useextremecautionwhenremoving the radiator cap.When the radiatoris hot, the coolantis under pressure. Neverremovethe radiator cap when radiatoris hot, alwaysallowthe radiatorto cool down. ,

,

Loosen the radiator cap slowly. After confirming that the pressure has been released, push the cap downand hold it downwhile turning to remove.

Openthe radiator drain cock and drain the coolant. Close the drain cock and fill with tap water (hot water). Operate the engine speed slightly faster than idling to raise the coolant temperature to 80°C (176 °F) or more. Then, operate the engine for approximately 10 minutes.

4-36

3.

Stop the engine and open the radiator drain cock. Flush the radiator with tap water until the water draining is clean.

4.

Close the radiator drain cock. Fill the radiator with tap water in which LONG LIFE COOLANThas been mixed (30% or more) up to the radiator cap. Rotate the engine for a while to fully release air from the cooling system.

5.

Stop the engine. Checkthe coolant level (the reserve tank water level should be between FULL and LOW). Fill with tap water if it is low.

MAINTENANCE NOTE : Thefollowingworksrequirea specialskil because they are the check and maintenance for inside the engine.Since the adjustmentalso requires special nowledgeand skil, entrust it to our company or ourauthorized servicefactory. ¯ Checkand Adjustmentfor Valve Clearance This is to correct the time lag on the operating timing of exhaustandintake valves. Negligence for this servicecausesfor severalfaults suchas output shortage,improperexhaustcolor, exhaust noise andso on. ¯ CheckandAdjustmentfor Fuel Injection Timing This is to adjust the fuel injection timing to optimize the engineperformance. ¯ Check, Adjustmentand Rappingof Exhaustand Intake Valves This is to ensurethe air-tightness on the exhaust and intake valves to optimize the engine performance. for Starter andAlternator ¯ CheckandAdjustment Thereis a possiblity of worn-outbrushand/orlack of greaselubrication on bearing.

Thisis of the adjsut to get goodstart ability and powergeneration.

4--37

J

MAINTENANCE ¯ REPLACING THE HYDRAULIC OIL

-----~ Hydraulicoil level checkposture

Thehydraulicoil tank containshigh-temperature andhigh-pressure oil. Stopthe enginebeforeremoving the cover.

Loosen air breatherof hydraulicoil tank to releasepressure.

I

~j~~-~c:~ .-~~oze

Bucket r

blade

"~’~~

¯ Oil volumeto be replaced SK25SR- SK30SR-SK35SR:36~ (9.5gall 1. Slewthe upperframeof machine so that the drain plug ~ on hydraulicoil tank comesbetween both crawlers.Andset the machine to the hydraulicoil checkingposture.Thenstopthe engine.

2. Remove the cover~ of right side of the opedor’s seat.

3. Slowlyloosenthe air bleesenplug @to release insidepressure fromhydraulicoil tank,referringto the page4-8.

4. After releasinginsdiepressure fromhydraulicoil tank, remove the plug~ of oil filling port with a wrench.

(Hex:27mm/1.06in) 5. Usingthe oil feedingpump, discharge the oil from theoil filling port(F)into a container to receivethe drained oil.

6. Theremaining oil in the tankis drainedfromthe drain plug~. Set up a containerto receive the drainedoil underthe drain plug(~on the bottom of hydraulicoil tank. Thenremove the drain plug~ with a spanner(27mm/1.06in)to drain up the remaining oil.

7. Checkthe O-ring<~ for any scores or other damages, andreplaceit to newone,if necessary.

8. After the drainingup the remaining oil, attah the drain plug~ and O-ring~ on to the tank, and tighten it up.

after NOTE: ¯ After inspectionand maintenance releasingthe internalpressure of hydraulic oil tank, make sureto pressurize the tankbeforestartingoperation.

Forhydraulictank pressurization procedure,seePage4-8.

Dispose of wasteoil as industrial waste according to yourcountry’senvironment protection law.

4-38

Level gauge..~

--"

Hydraulic tank-"~

~~

/(F)

Packing~~_

Drainingoil receivingcontainer

MAINTENANCE ¯ CLEANING THE SUCTION STRAINER The suction strainer prevents foreign materials from entering into the pump. Thus, since the strainer is a very important part, handle it with due care.

.. Hydraulictank

Clean it whenreplacing the hydraulic oil.

NOTE : After inspectionandmaintenance releasing theinternalpressure of hydraulic oil tank.

Make sureto pressurize the beforestarting operation.

For hydraulic tank pressurization procedure, seePage4-8.

1. Loosenthe clip® for hydraulic piping, and disconnect the hose~ from the flange@ on hydraulic oil tank. Loosenthe capscrews® and lock washers~(4pcs. each), and take out the suctionstrainer@.

2. Dropoff dust and other contaminationon the straine~,thencleanit with dieselfuel or cleaning oil. Replacethe strainer@to newoneif it is damaged. the O-ring@ to newone.

3. Replace 4. Install the suctionstrainer@ with the reverseorder of the above 1.

Suctionstrainer~tighteningtorque:12-1-1 kgf.m(87-t-7 ft.lbs) Capscrew~ tightening torque: 4.7_-+0.5kgf.m(34_4 ff.lbs)

@

Level

5. Fill thehydraulic oil tankwiththespecifiedhydraulic oil of the specifiedvolume.

Check for the oil level on the level gauge beingbetween "H" and"L". Dot not fill the oil beyondthe "H" level. For the specifiedoil, referto pages 4-3,4-4and4-5.

Check the O-ring@ for any damages, andreplaceit 6. to newoneif necessary,tighten up the plug~ securelywith a wrench.

4-39

gauge

~HLevel ~ --TL Level

.~

~ ~___~@/..~

®

MAINTENANCE (’2000-HOUR

INSPECTION AND MAINTENANCE

Perform together with 8 to 1000 hour inspection and maintenance.

Thoroughly read and understand the section, SAFETYOPERATION of thus manual before operating or servicing the machine. ¯ REPLACING ENGINE OIL IN THE TRAVEL REDUCTION UNIT

Theoil temperature is veryhot immediately after the machine hasbeenoperated,Replace engineoil after the oil temperature hasfallen. ¯ Oil volumeto be replaced SK25SR : 0.6e (0.16gal) SK35SR : 0.7~ (0.18gal)

-190 ° ,/ r///////.

oil after the first 500hoursof opNOTE: Replace eration 1. Place the machineon the level ground.

2. Rotate the motor until the drain plug (~ in the lowest position.

3.

Remove the drain plug (~ and level plug @)and drain the oil into the container.

4.

After draining oil completely, clean the drain plug (~, seal it with tape and retighten.

5.

Fill engineoil through the level plug till engine oil comesout of the screwed part of the level plug.

6. Seal it with tape and retighten.

NOTE:¯ Checkthe wasteoil. If there are metal chipsor powder mixedin the oil, contact your KOBELCO distributor. ¯ Dispose of wasteoil as industrial waste according to yourcountry’senvironment protection law.

4-40

MAINTENANCE

¯ REPLACING ENGINE OIL IN THE TRAVEL REDUCTION UNIT

Theoil temperature is veryhot immediately after the machine hasbeenoperated.Replace engineoil after the oil temperature hasfallen. ¯ Oil volumeto be replaced SK30SR :0.5~ (0.13gal)

GL 3 90" // ~///////~////////,

oil after the first 500hoursof opNOTE: Replace eration 1. Setthe machine on a level groundso that the plug of oil supply/drain port~ comes directlybelow.

2. Providea vesselto receivedischarged oil underthe oil supply/drain port~. the plugof oil level checkport ~, 3. Slowlyremove thenremove the plugof oil supply/drainport ~ to discharge oil into thevessel.

4. Set the machine so that the oil supply/drainport comes directly above. fill in oil fromtheoil supply/drain port(~ upto 5. Slowly overflowing oil fromtheoil level check port~.

6. When the oil comes out of oil level checkport ~, securelyplugthe oil level checkport ~ andthe oil supply/drainport (~ applyingsealingtapeon the threadof both plugs. Wipeup the oil adheredon the circumference.

7. Confirm nooil leakages travelingthe machine slowly NOTE:¯ Checkthe wasteoil. If there are metal chipsor powder mixedin the oil, contact your KOBELCO distributor. ¯ Dispose of wasteoil as industrial waste according to yourcountry’senvironment protection law.

¯

GREASE REPLACEMENT OF SLEWING GREASE BATH To replace the slewing greasebath, it is necessary to disassemble the upper frame.

Contact your KOBELCO distributor to do it.

4 --41

MAINTENANCE ¯ CLEANINGLINE FILTER OF PILOT VALVE

Linefilter

¯ Cleaninginline filter The P ports of right and left pilot valves and solenoid valve are equipped with adapter with filter.

Dust, etc. that adheres on the filter and enters in the valve maycause trouble.

Takeout and clean filter.

1.

Stop the engine after shifting the safety lever to "LOCK"in parking position.

2.

Removeconnector connected to P port of pilot valve mountedunder the operation stand. After removing, add blank plugs to the lubricating holes of valve and hose.

Inline filter

/

( >.,,

-’3,

ConnectoHr

°se~

Pilot valve

3.

Clean connector with light oil or blow air out.

4.

After cleaning, install it in right andleft of pilot valve.

P Port

~k

Pilot valve /

Connector

View A Tighteningtorque:3.7+__0.2kgf ¯ m(27+_ lft .Ibs) P

Subsequentlyclean inline filter va Ive. 5.

6.

t I

of solenoid

After disconnecting hose, removeinline filter assy from the tee connectedto the solenoid valve. Addblank plugs to lubricating holes of the removed tee and hose.

Floor

ma~_3,~ ~

Floor

cover~

~~lnline filter liter

Washand clean strainer with light oil or blow air out.

Then, check O-ring for possible damage, and replace the damagedO-ring with new one.

Solenoidvalve

7. Fit strainer to nipple with flat driver first, andthen install it on the inline filter case.

Tighteningtorque:11 ___1 kgf. m(80_7ft¯ Ibs) 8.

Removeblank plugs, and attach inline filter assy to tee of solenoid valve. Then connect hose. lightening torque:6~8kgf.m(43~58ft.lbs) 1 2 3

4 -42

Case Strainer Label

4 5 6

O-ring Nipple O-ring

CHAPTER 5. TRANSPORTATION

ITRANSPORTATION1 WHEN PREPARING TRANSPORTATION PLANS 1 ¯ Beforepreparing to transport theexcavator referto thepage6-1andcheckthetotalweight, height, width, traveling speed, ground pressure, etc. ¯ Surveythewidthof roads,roadsurface conditions, andtraffic on theroadsto be used,and obtainauthorization to usetheroadsif necessary. ¯ POSTURE DURING TRANSPORTATION ¯ Ramps Relationship of trailerheight"H" and ramp length"L" Units: mm /ft.in) H 750(2’06") 930(3’01")

L 2800(9’02") or more 3500(11’06")or more

1110(3’08") 4200(13’09")or more 1300(4’03") 4900(16’01")or more ¯ Choosea lengththatwillkeepthe slope angelunder15° anda material thatis sufficiently strong. ¯ The ramp widthshould be at least 1.2 timesthemachinewidth. ¯ Bevel the end of the ramp as shown at point"A"on thefigure. ¯ Fastenthe rampsecurelyto the trailer witha metal fitting, etc., soitwillnotslip off.

For bettersafety,inserta support"B" underthe rampin themiddle. ¯ LOADING AND UNLOADING THE EXCAVATOR 1. Removeany mud, etc.,from the lower areato prevent theexcavator fromslippingsideways off theramp.

2. When loadingextendthe bucketcylindersoitis directly overthetrailer, lift the dozerblade,thenclimbup theramp at slowspeed.

3. Onceon thetrailer, slowly lifttheboom, slew,andsettheexcavator.

4. Locktheslewing.

5. Setblocks underthecrawler at thefront andrearandfasten withwirerope,etc.

6. When unloading, lift the dozerblade, andmaintain the bucketat a heightof 40 to 50 cm abovetrailer bedso thatit can be guicklyloweredto the ground and the machinestoppedin an emergency.

5-1

¯ Always moveat low(1st)speedon a slope. ¯ Theexcavator should always be loaded andunloaded onfirm, level ground.

Setthetrailer’s parking brake andsetblocks under thecrawler.

Neverchangedirections or slewwhileon the ramp,as thisextremely dangerous.

TRANSPORTATION ¯ SECURING THE MACHINE Afterthe machineis loadedand positioned, fixthe machineby the following procedure,

Pad

\.

j,

¯ - Pad

leverandsetto the 1. Pullup on thesafety lockposition.

2. TurnOFF all switches and pull out the starter key. ~\\\\\\\\\\\\\\\\\",~

3. Lockall the capsand the door, 4. Applythe blocksto boththe frontand rearof the crawler and fixthemwitha wirerope of sufficient strength.

This will preventthe machinefrom moving forward/backward or rollingdue to vibration formthetrailer.

Attachallindividual partsand removedpartsto the trailer firmly.

SK25SRmodel(Loaded on 4-tontruck)Until:mm (if-in) 3475(110’05")

SK30SRmodel(Loaded on 4-tontruck)Until:mm (if-in) 3670(12’00")

SK35SRmodel(Loaded on 4-tontruck)Until:mm (if.in) 3980(13’01")

"////,..,/.., "///,.

5-2

% "/////

TRANSPORTATION ¯ LIFTING PROCEDURES COMPLETE

FOR MACHINE

(CANOPYSPEC. SK25SR

¯ Thewireropesto be usedforlifting themachine should havesufficient strength against the machine weight. ¯ Improper lifting method and/or roping manner mightcausefora movement or slipof themachine while itislifted up,resulting serious injuryor damages on themachine. ¯ Do notimpose a loadquickly on thewireropes andslings. ¯ Whenthelifting workiscarried outincooperationwithplural persons, makesuretoconfirm everysituations withexchanging signals with eachother. ¯ During thelifting work, keepanypersons away fromaroundthelifting machine especially underthemachine.

Carryoutthelifting workat a levelground, witha cranewithcapacity to lift5 tonsor more.

1. Startup the engine,and slew the machineso thatthe dozerbladecomesto backside of themachine.

2. Raisethe dozerbladeup to the most upperposition.

3. Manipulate eachoperating leverto take the machinea postureas shownin the figure.

4. When the boom is swung,operatethe boomswingpedalto face the boomdirectfront.

5. Stop the engine,and make the safety leverto " LOCK POSITION"Then take offthe machineafterconfirmation for no abnormalities aroundthe operators seat. to bothbores~ pro6. Installshackles videdat bothendsto the dozerblade, and putthe wireropeson them.

7. Putthewireropeson the"A"portion of the upperboom.

8. If any portionsof the wire ropesdirectlyget touchwiththe machinewhen the wireropesare put up, protectthe machinefrom damagesby meansof applyinga woodenpieceor rag between them. g , Put the wireropes from30 to 40 degrees of lifting anglewitheachother. liftto themachine to confirm 10. Slightly thebalance, thenliftup themachine.

5-3

SK30SR

SK35SR

1,800 (5’11") 4,200 (13’09")

Size A mm(ft.in) SizeB mm(ft oin)

2,550 2,970 3,400 Total weight kg(Ibs) (5,620) (6,550)(7,500)

A

Lifting angle 30° ° ~ 40

B (2pcs.)

NOTES

CHAPTER 6. SPECIFICATIONS (MAIN SPECIFICATIONS ¯ SPEED AND GRADABILITY Model

SK30SR

SK25SR

SK35SR

crawler Steel crawlerRubber crawler Steel crawler Rubbercrawler Steel crawlerRubber

Item Slewing Speed

(rpm)

8.4

8.8

8.5

Low(lst) High(2nd’, Low(lst) High(2nd)Low(lst) High(2nd)Low(lst/High(2nd’, Low(lst) High(2nd/Low(lst) TravelSpeedkm/h(mph) 2.7(1.7) 4.9(3.0) 2.5(1.6)4.6(2.9) 2.8(1.7) 4.8(3.0) 2.5(1.6) 4.5(2.8) 2.5(1.6/4.7(2.9) Gradability degree(%)

30° (58%)

l Hydraulic Pump

Variable displacement axialpiston+gear pump

Hydraulic Motor

Axial piston motor

Orbit motor

]

Hydraulic Motor (Travel)

]

Axial piston motor

Axial piston, 2 - Speed motor

Control Valve

9 - functions multiple control valve

Cylinder (Boom,Arm, Swing, Bucket, Blade)

Double action cylinder

Retum filter

Safety valve containing filter type (10/~

¯ SIDE DIGGING SK25SR

SK30SR

I Boomswing byhydraulic cylinder

Type Boom Swing Ange

Canopy

55"(Right) /85° (Left)

Cab

55° (Right) / ° (Left)

SK35SR

¯ SPEED AND GRADABILITY SK25SR

SK30SR

SK35SR

Rubber crawler I Steel crawlerRubbercrawler Steel crawlerRubber crawler Steel crawler Fully - equipped weight

Canopy Cab Canopy Cab Canopy Cab Canopy Cab Canopy Cab Canopy Cab 2,550 2,680 2,590 2,720 29701 3,100 3,OLO 3,14o 3,400 3 53o 3 490 3,620 kg (Ibs) (5,620) (5,910) (6,640) (6,920) (5,710) (6,000) (61550) 1(6,840) (7,500) (71780) (71700) (7,980) 1,3401,470 1,3401,470 1 590 1,720 1,59o 1 720 1,8101,940 1 810 1 940 Uppermachinery kg (Ibs) (2,950) (3,240) (2,950) (3,240) (31510) (3,790) (3,51o) (31790) (3,990) (4,280) (3’,990) (4;280) 1,090 935 975 1 050 1 195 1 285 Lowermachinery kg (Ibs) (2,060) (2,150) (21320) (2,400) (21630) (21830) 275 33O 395 (610) (730) (870) Attachment (S,T.D) kg(Ibs) 3 3 2.30m+1.18m+0.09m 2,475m+1.28m+0.1 3 lm (Boom+Arm+Bucket) rnm(ft.in) 2.15m+1.13m+0.08m (7’11"+3’08"+0.105cu.yd)(7’07"43’10"+0.118cu.yd)(8’11"+4’02"+0.144cu.yd) Dozer Blade (WidthXHeigt) mrn (ft.in) 1,550mmX330mm(5’01"X 1’01")

1,700ram X330mm (5’07" X 1 ’01") Strokes ofBlade (up and down) mm(ft.in) 310mm/ 320mm(12.2"X12.6") 290ram/ 400mm(11.4"X15.7") 300mm/ 410mm(11.8"X16.11") 6-1

SPECIFICATIONS ~ EXTERNALDIMENSIONS(SK25SR.CANOPYSPEC.) ¯ WITH2.15M(7’01")BOOM AND 1.13M(3’08")STANDARD

Unit :M(ft-in)

IS00(4’11’~ ,910(3’00")

3oo1 I

(11’08")1, 1550 (5’01"~

l

3920(12’10")

L i

EXTERNALDIMENSIONS(SK25SR-CABSPEC.) ¯ WITH2.15M(7’01")BOOMAND 1.13M(3’08’1STANDARD

1500 (4’11’~ ,= (3’02") 970

~- ~- ~-----~r ~

i~~

i

(1l’0e’) 1550(5’01’~

NOTE"Numerical values marked .~ do notinclude theheight of theshoelug.

Numerical values enclosed inparentheses (~~)indicate steel crawler specifications, 6-2

SPECIFICATIONS (-EXTERNAL DIMENSIONS (SK30SR’CANOPY SPEC.) Unit :m(if-in)

¯ WITH2.15M(7’01")BOOM AND 1.13M (3’08") STANDARD ARM

----~’z’-_::

-"-~;~

~.~z:~,.-.~--_.~_...+~~ 1500(4’11") _-~ 910(3’00~,

_NN 300 (11,-~ =’’’1550(5’11’1

.....

2t.........

174o c5’o9~ c1"~oo/5’o7% _

_(

2010 (6’07") [’1970 (6’06")] 3350(11’00") 1370 ~4"-06") 4120 (13’06")

(,EXTERNAL DIMENSIONS (SK30SR’CAB SPEC.)~ ¯ WITH 2.15M (7’01") BOOM AND 1.13M (3’08") STANDARD

1500 (4’11") 970

(11.s-)1~ ’~ 1550 (5’1~")

NOTE"Numerical valuesmarked.~ do not includetheheightof theshoelug.

Numerical valuesenclosed in parentheses [~ ~ indicate steelcrawler specifications.

6-3

SPECIFICATIONS f-----<....

------...,

c,x,,,,.. ¯ WITH2.475M (8’11")

.

Unit :i(ft-in)

STANDARD ARM

~--~_ ....

--. ....._..,,.

"1~ U~ ~ ~/~E_~ .~-..-~,_~. __L_ ....... __,~~~

°~ 0

..-,..~7-_ °°~_ -----~_ -.

-~_ -..--..~

_.._y’~ .....

--’f........

-5..... /--~

1500(4’11")

n

910(3’OO")

o

17,o/5’o9") c1,oo c5’o7~ _1

1700(5’07’)

I

~1£.

2210(7’03") [2170’(7’01")’~ 3590(11’09") .I. 1500 (#11")

_

,...

4,440 (14’07")

J

(EXTERNALDIMENSIONS(SK35SR.CAB SPEC.)) O WITH2.475M (8’11") BOOM AND 1.28M(4’02")STANDARD ARM

~18

--~_._.......................... ~,.-, ! _. ~ --’-’-~ ---"’--=:--~~" ~_._..__r’-5- .~,~1 __3

~

--

t,--

-~.

-q; 1500 (4’11") 970

/(3’°~’) I

1700 (5’o7") 3590 (11’09") 4440~

NOTE" Numerical values marked -~ do notinclude theheight of theshoelug.

Numerical values enclosed inparentheses ( ) indicate steel crawler specifications.

6-4

SPECIFICATIONS WORKING RANGE (SK25SR ¯ CANOPY SPEC.) ¯ BACKHOE

ATTACHMENT

Unit " mm(ft-in) 1.13m (3’08") Standard arm 1.40m (4’07") Longarm Item 0.080m 3 (0.105cu.yd) Bucket 0.080m 3 (0.105cu.yd) Bucket A Maximumdiggingreach 4650(15’03") 4910(16’01") A S Maximumreachat groundlevel 4520(14’10") 4780(15’08") ~B Maximumdiggingdepth 2600(8’06") 2870(9’05") Maximum digging height YrC 4490(14’09") 4680(15’04") YCD Maximumdumpingheight 3240(10’08") 3430(11’03") "kE Minimumdumpingheight 1320(4’04") 1060(3’06") Vertical digging depth -kF 2100(6’11") 2360(7’09") G Minimumswingradius 1740(5’09") 1850(6’01") "A’H Heightat minimumswing 3380(11’01") 3390(11’01") ~-J 8-feet level digging depth 2060(6’09") 2400(7’10") K Stroke Horizontal digging 2070(6’09") 2440(8’00") strokeat groundlevel!Minimum L 1500(4’11") 1380(4’06") NOTE"Dimensions marked -/~do notinclude theheight of theshoelug.

6-5

SPECIFICATIONS ( WORKING ¯ BACKHOE

RANGE

(SK25SR

¯ CAB SPEC)

ATTACHMENT

A

,

i O

~

ype

1.13m(3’08") Standard arm 0.080m 3 (0.105cu’yd) Bucket

Maximum digging reach Maximumreach at groundlevel

4650(15’03") 4520(14’10")

~B ~-C ~D

Maximum digging depth Maximum digging height Maximum dumping height

2600 (806) 4090(13’05")

~E ~-F

Minimum dumping height

A

A

t

Verticaldiggingdepth Minimum swing radius

2880(9’05") 1130(3’08") 2100(6’11")

~H

Height at minimumswing

2110(6’11") 3170(10’05")

~J

8-feetleveldigging depth Stroke Horizontal digging strokeat groundlevel Minimum

2060 (609) 2070(6’09") 1500 (411")

G

K L

NOTE: Dimensions marked~k do notincludetheheightof the shoelug.

6-6

Unit: mm(if-in) 1.40m(4’07") Longarm 0.080m 3 (0.105cu.yd) Bucket 4910(16’01") 4780(15’08") 2870(9’05") 4230(13’11") 3020(9’11") 860 (2’10") 2360(7’09") 3180(10’05") 2400(7’10") 2400 (710) 1380(4’06")

SPECIFICATIONS ( WORKING RANGE (SK30SR ¯ CANOPY SPEC.) ¯ BACKHOE

ATTACHMENT

O

Item A Maximumdiggingreach W A Maximumreachat groundlevel Maximumdiggingdepth "kB ~C Maximumdiggingheight "A’D Maximumdumpingheight -A’E Minimumdumpingheight ¯’/)r Vertical digging depth G Minimumswingradius "~’H Heightat minimumswing "kJ 8-feet level digging depth K Stroke Horizontal digging stroke at ground level Minimum L

Unit " mm(if-in) 1.18m (3’10") Standard arm 1.45m (4’09") Longarm 0.090m 3 (0.118cu.yd) Bucket 0.090m 3 (0.118cuoyd) Bucket 4910(16’01") 5160(16’11") 4780(15’08") 5050(16’07") 2840(9’04") 3110(10’02") 4760(15’07") 4950(16’03") 3390(11’01") 3590(11’09") 1360(4’06") 1100(3’07") 2080(6’10") 2330(7’08") 1810(5’11") 1910(6’03") 3540(11’07") 3550(11’08") 2340(7’08") 2670(8’09") 2130(7’00") 2520(8’03") 1660(5’05") 1530(5’00")

NOTE: Dimensions marked "A"do notinclude theheight oftheshoelug.

6-7

SPECI FI CATI ONS ( WORKING RANGE (SK3OSR ° CAB SPEC.) ¯ BACKHOE

ATTACHMENT

O

~

Item

hment Type

-A-B

~...

Maximum digging reach Maximumreach at ground level Maximum digging depth

"A’C

Maximum digging height

"A’D -A-E -A-F G

Maximum dumping height Minimum dumping height

A

Ae

-kH

Verticaldiggingdepth Minimum swing radius Height at minimum swing

"A’J K L

8-feetleveldigging depth Stroke Horizontaldigging strokeat groundlevel Minimum

1.18m(3’10") Standard arm 0.090m 3 (0.118cuoyd) Bucket 4910(16’01") 4780(15’08") 2840(9’04") 4400(14’05") 3070(10’01") 1190(3’11") 2080(6’10")

Unit: mm(ft-in) 1.45m(4’09") Longarm 0.090m 3 (0.118cuoyd) Bucket 5160(16’11") 5050(16’07") 3110(10’02") 4560(15’00") 3230(10’07") 920(3’00") 2330(7’08")

2130(7’00") 3360(11’00") 2340(7’08") 2130(7’00") 1660(5’05")

NOTE:Dimensions marked~k do not includethe heightof the shoelug.

6-8

2670(8’09") 2520(8’03") 1530(5’00")

SPECIFICATIONS ( WORKING

RANGE (SK35SR

¯ BACKHOE

ATTACHMENT

¯ CANOPY

SPEC.)

O

1.28m(4’02") Standard arm 0.11m 3 (0.144cu.yd) Bucket A

Unit¯ mm(if-in) 1.55m(5’01") Longarm 0.11m 3 (0.144cu.yd) Bucket

Maximum digging reach Maximumreach at groundlevel

5180(17’00") 5070(16’08")

5440(17’10") 5330(17’06")

~’B "/tC

Maximum digging depth

3110(10’02") 4880(16’00")

3380(11’01") 5050(16’07")

"A’D "A’E ~-F

Maximum dumping height Minimum dumping height Verticaldiggingdepth Minimum swing radius

3450(11’04") 1340(4’05")

3630(11’11") 1080(3’07")

2510(8’03") 1910(6’03")

2780(9’01") 2020(6’08")

Height at minimumswing 8-feetleveldiggingdepth

3680(12’01") 2610(8’07")

Stroke Horizontal digging strokeat groundlevel Minimum

2290(7’06") 1660(5’05")

3690(12’01") 2940(9’08") 2680(8’10")

A

G ~-H ~-J K L

t

Maximum digging height

NOTE:Dimensions marked~- do not includethe heightof the shoelug.

6-9

1530(5’00")

SPECI FICATIONS ( WORKING RANGE (SK35SR ° CAB SPEC.) ¯ BACKHOE

ATTACHMENT

Unit : mm(ft-in)

~

Type Maximum digging reach

A

A

t

"A-B YrC "kD "kE ~-F G YrH YrJ K L

Maximumreach at ground level Maximum digging depth Maximum digging height Maximum dumping height Minimum dumping height Verticaldiggingdepth

1.28m(4’02") Standard arm 0.11m 3 (0.144cu.yd) Bucket 5180(17’00") 5070(16’08") 3110(10’02") 4460(14’08") 3080(10’01") 1160(3’10") 2510(8’03")

Minimum swing radius Height at minimumswing

2310(7’07") 3470(11’05")

8-feetleveldigging depth Stroke Horizontal digging strokeat groundlevel Minimum

2610(8’07") 2290(7’06") 1660(5’05")

NOTE: Dimensions marked~ do notincludethe heightof the shoelug.

6-10

1.55m(5’01") Longarm 0.11m 3 (0.144cu.yd) Bucket 5440(17’10") 5330(17’06") 3380(11’01") 4600(15’01") 3220(10’07") 890 (2’11") 2780(9’01") 3480(11’05") 2940(9’08") 2680(8’10") 1530(5’00")

SPECIFICATIONS COVERALL SPECIFICATIONS OF BOOM

SK35SR SK25SR SK30SR Item Length×Height×Width2235×805×200 2390×830×200 2575X885X200 (8’05’×2’11 "X7.9") (7’10’X2’09’X7.9") (LXHXW) mm(ft-in) (7’04’×2’08’×7.9") Weight

kg(Ibs)

115(254)

139 (306)

154(340) L

(OVERALL SPECIFICATIONS OF ARM AND BUCKET ! ~ I]/~...............................

(Standard Arm + Standard Bucket) SK25SR Item

SK30SR

SK35SR

Length×Height×Width2055×400X500 2170×465×500 2330X445X500 1 ’04"× 1 ’08"(7’01 ’×1’06’× 1’08") (7’08’× 1’06’X 1’08") (LXHXW) mm(ft.in) (6’09’X 179 (395) 116(256) 155(342) kg(Ibs) Weight L ~-~=

(OVERALL SPECIFICATIONS OF ARM (Standard Arm)

SK30SR SK35SR SK25SR Item Length× Height×Width1465X300×200 1530X310×200 1650×355×200 (5’00’X 1 ’00’X 7.9")(5’05 ’×1’02 "X7.9 ") 11.8’×7.9") (LXH×W) mm(ft.in) (4’10’X Weight

kg(Ibs)

70 (154)

93 (205)

97 (214)

SK30SR

SK35SR

COVERALL SPECIFICATIONS OF BUCKET~ (Standard Bucket) Model Item

SK25SR

i

640X620X500 705X610X500 Length XHeightX Width 633X535×500 2’O0’X 1 ’08") ’X1’09’× 1’08") (2’01 ’X2’O0’X 1’08")(2’04’X (LXH×W) mm(ft.in) (2’01 71 (157) 82 (181) kg(Ibs) 46 (101) Weight

L COVERALL SPECIFICATIONS OF DOZER BLADE SK25SR

SK30SR

SK35SR

Length X Height X Width 1030X320X1550 1055X320X1550 1185X325X1550 (3’11’X1’01’X5’01") 1’01 ’X5’01 ") (3’06’X 1’01’X5’01") (LXHXW) mm(ft.in) (3’05’X 117(258) 129(284) kg(Ibs) 112(247) Weight

6-12

SPECIFICATIONS (SHOE TYPES (SK25SR. SK30SR. SK35SR)

Model

ShoeWidth mm(ft-in)

SK25SR

300(11.8")

1,550(5’01")

0.27(3.8)

0.29(4.1)

SK3OSR

300(11.8")

1,550 (5’01")

0.30(4.3)

0.31(4.4)

SK35SR

350(13.8")

1,700(5’07")

0.26(3.7)

0.27(3.8)

SK25SR

300(11.8")

1,550(5’01")

0.28(4.0)

0.30(4.3)

SK3OSR

300(11.8")

1,550 (5’01")

0.31(4.4)

0.32(4.6)

SK35SR

350(13.8")

1,700(5’07")

0.27(3.8)

0.28(4.0)

Shape

Total width ofcrawler Ground pressure kg.f/cm~(psl) mm(if-in) Canopy Cab

Rubber crawler

Steel crawler

(BUCKET TYPES (SK25SR)] Hoe Bucket

Outside Width ofBucket mm(fl,in) Number Weight Heapedcapacity m3(cu-yd) With side cutters With out side cutters ofTeethkg (Ibs) 0.035(0.046) 300(11.8") 235(9.3") 3

38 (84)

0.080 (0.105) 500(1’08") 435(1’05") 3 0.080 (0.105) 500(1’08") 435(1’05") 4 0.088 (0.115) 600(2’00") 540(1’09") 4

46 (101)

Remarks

51 (112)

Standard

51 (112)

Heavydutytype

(BUCKET TYPES (SK30SR)) Hoe Bucket

Outside Width ofBucket mm(ft.in) Number Weight Heapedcapacity m3(cu-y d)Withsidecutter,, With out side cu~rs ofTeethkg(Ibs)

Remarks

0.050(0.065) 350(1’02") 280(11.0") 3

60 (132)

0.070(0.092) 450(1’06") 380(1’03") 3

68 (150)

0.090(0.118) 500(1’08") 430(1’05") 3

71 (157) Standard

0.090(0.118) 500(1’08")430(1’05") 4

75 (165)

0.100(0.131) 600(2’00")530(1’09") 4

79 (174)

Heavydutytype

( BUCKET TYPES (SK35SR) HoeBucket

Heaped capacity !Outside Width ofBucket mm(ftoin) Number Weight m~(cu-yd) With side cutters With out side cutters ofTeethkg (Ibs)

Remarks

0.044(0.058)350(1’02")280(11.0") 3

63 (139)

0.063(0.082) 450(1’06")380(1’03") 4

71 (157)

0.11(0.144) 600(2’00")530(1’09") 4

82 (181)

Standard

0.11(0.144) 600(2’00")530(1’09") 5

86 (190)

Heavydutytype

0.12(0.157) 700(2’04")630(2’01 ")

89 (196)

6--11

4

CHAPTER 7. OPTIONAL DEVICE ~" SWITCHING THE ROTARY MULTI CONTROL VALVE 1 Operationpatterns(yoKoH.M) are readilyavailableon this machineif the shiftlever switched overby rotarymulticontrol valve.

¯ SWITCHING THE ROTARY MULTI SHIFT LEVER

Always lowerthebucket to theground andstop theengine before switching therotary multi controlvalve.

90"

Always check thelever patterns before operating themachine.

-4 ° 0

pat1. If youwishto changetheoperation tern,takeout thefloormat and cover

®. bolt(~)and setthe 2. Takeoffthebutterfly lever(~ to a desired operation pattern symbol.

Tighten thebutterfly bolt~). coverandlaythefloor 3. Refittheremoved mat. carefully 4. Checktheshiftleverposition beforeoperating the machine.

7-1

Rotarymulti control valve

OPTIONAL DEVICE ¯ REMOVING OPERATING PATTERN LABEL Sticklabelon therightsideof operator’s seat. pattern labelis in magnet NOTE: Theoperating sticktype.

Keepit carefully because it is necessary whentheoperation pattern is changed.

¯ OPERATING

LEVER

Method

Canopy

PATTERN Left-hand operating lever

Right-hand operating lever

Y (ISO)method

Arm and slewinglever

Boom and bucketlever

Boom and bucketlever

Arm and slewinglever

Arm and slewinglever

Boom and bucketlever

Boom and bucketlever

Arm and slewinglever

K method

H method

M method

7-2

OPTIONAL DEVICE AoB MODE SIFTER SWITCHING PROCEDURE I TheAoBshifter on theleftstandis usedto switchthemodeto A typeor B type.

Always lowerthebucket to theground andstop theengine before switching theA-Bmode.

( shift lever ~(,-/>

S SWITCHING THE AoB MODE SHIFTER 1. Pulloutthegripof theswitching lever on thefrontof theleftoperating lever stand.

Pincomesoffthelocking holeof valve.

2. Turnleverkeeping the grippulledout.

A type--- Turnit 50 degrees toward theoperator.

B type---Turnit 50 degrees toward theoutside.

Grip ~ii~~

valve

I(In wards)"V~,~ ~-’~\

3. Turnthe leverapprox.50 degreesand release it whenit stopped.

Thepingoesintoa locking holeof valve, andis secured.

’~ (Outwards)

to 4. Checkthatthetopendof gripreturns the normalposition.

If returned, the leveris securely locked.

O OPERATING LEVER PATTERN Left-hand operating lever Method

Right-hand operating lever

Y (ISO)method (A Type)

Arm and slewinglever

Boom and bucketlever

Arm and slewinglever

Boom and bucketlever

H method (B Type)

7-3

NOTES

CHAPTER 8. ALPHABETICAL

INDEX

B Boomswingoperating pedal...............

2-9 Lubrication and maintenance intervals ......

4-10,v 4-12 Bucket types (SK15SR/ ........................

6-8 Bucket types (SK2OSR) ........................

6-8

c

] Monitorpanel

M

Cab.......................................

2-13~ 2-15 Coolant temperature meter...............

2-3 Fuel meter ..................................

2-3 Hourmeter ..................................

2-3 Lowfuelwarning lamp.....................

2-4 Dozer blade operating lever ..................

2-10 Engine oilpressure lamp..................

2-4 Battery charge lamp........................

2-4 Coolant temperature lamp...............

2-4 Air cleaner clogging lamp ...............

Expendable parts 2-4 (SK15SRand SK2OSR) ............

4-5 High(2nd)travel speedlamp............

2-5 Externaldimensions Glowlamp...................................

2-5 (SK15SR ¯ Canopyspec.l ............

6-2 Deceleration switch -.......................

2-6 Externaldimensions Working light switch ........................

2-6 (SK15SR ¯ Cabspec.) .............

6-2

I

D

]

E

]

Externaldimensions (SK2OSR¯ Canopyspec.) ............

6-3 Externaldimensions (SK2OSR ¯ Cabspec.)

.............

6-3

[

o

]

Operating lever .................................

2-9 Option pedal ...................................

2-11 Overall specifications of boom............

6-9 Overall specifications of arm ...............

6-9 Fusebox..........................................

2-11 Overall specifications of bucket ............

Fusible link .......................................

2-12 6-9 Overall specifications of arm andbucket ............

6-9 I Overall specifications ofDozer blade ...........

6-9 Optional device Inspection and maintenance (Whenrequired) ......

4-13~- 4-20 Multi control valve ...........................

7-1 A,B mode sifter ..............................

7-2 Inspection and maintenance (8-Hour) ......

4-21 ---.

4-23 Inspection and maintenance (50-Hour) ......

4-24~ 4-27 Inspection and maintenance (250-Hour) ......

4-28,--4-32 Inspection and maintenance (500-Hour) ......

4-33,v 4-34 Inspection and maintenance (1000-Hour) ......

4-35~ 4-38 Inspection and mazntenance (2000-Hour) ......

4-39 ,--4-40

8-1

R Recommended oil viscosity andits capacity (SK15SR)............

4-3 Recommended oil viscosity andits capacity (SK20SR)............

4-4

ALPHABETICAL

INDEX

Switch Starter switch .................................

2-6 Travel speed select switch ..................

2-6 Horn switch ....................................

2-6 Wiper switch .................................

2-7 Heater switch .................................

2-7 Safety lever ....................................

2-7 Shoetypes(SK15SR- SK2OSR).........

6-8

T Travel lever .......................................

2-10 Throttle lever ....................................

2-10 Transportation ............................

5-1---5-2

[

w

t

Workingrange(SK15SR) ............

6-4---6-5 Workingrange(SK2OSR) ............

6-6~ 6-7

8-2

<~ 2

KOBE

STEEL,

LTD.

NOTES

KOBELCO CONSTRUCTION MACHINERY AMERICA, LLC. Part Number North American English 245 E NORTH AVENUE Printed in U.S.A. CAROL STREAM, IL 60188 U.S.A

S2PW0001E-00NA November 03 Bur