Case 721F Tier4B - Disassembly and assembly (cont.); Hydraulic equipment disassembly;assembly

INTRODUCTION
Basicinstructions-Precautionfordisassemblyandassembly
Preparationsfordisassembly
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Thoroughlywashthemachinebeforebringingitintotheshop.Bringingadirtymachineintotheshopmaycause
machinecomponentstobecontaminatedduringdisassembling/assembling,resultingindamagetomachinecom-
ponents,aswellasdecreasedefciencyinservicework.
•
Besuretothoroughlyunderstandalldisassembling/assemblingproceduresbeforehand,tohelpavoidincorrect
disassemblingofcomponentsaswellaspersonalinjury.
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Checkandrecordtheitemslistedbelowtopreventproblemsfromoccurringinthefuture.
1.Themachinemodel,machineserialnumber,andhourmeterreading.
2.Reasonfordisassembly(symptoms,failedparts,andcauses).
3.Cloggingofltersandoil,waterorairleaks,ifany.
4.Capacitiesandconditionoflubricants.
5.Looseordamagedparts.
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Preparethenecessarytoolstobeusedandtheareafordisassemblingwork.
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Wearappropriateclothing,safetyshoes,safetyhelmet,goggles,andclotheswithlongsleeves.
•
Conrmreadyaccesstoarst-aidkitandreextinguisher,aswellasappropriateemergencypersonnelcontacts
inthecaseofamedicalaccidentorre.
•
Beforeperforminganyworkonthemachine,followlockout/tagoutproceduresbyattachinga“maintenancein
progresstag”.Thistagcanbeappliedontheleft-handcontrollever,safetyleverorcabdoor.Notifythosewith
accesstothemachinethatyouwillbeperformingthemaintenance.
Disassemblingandassemblinghydraulicequipment
•
Beforeremovinglines,releasethepressureofhydraulicoiltank,oropenthecoveronthereturnsidetotank,and
takeoutthelter.
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Draintheoilinremovedlinesintoanappropriatecontainertopreventoilcontamination.
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Protectopenconnectionswithplugsorcapstopreventoilfromleakinganddebrisfromcontaminatingthesystem.
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Thoroughlycleantheoutsideofcomponentsbeforedisassembling,anddrainhydraulicoilandgearoilbeforedis-
assembly.
Disassemblinghydraulicequipment
•
Impairedperformanceandfunctionofhydraulicequipmentafterunauthorizedservicemaynotbecoveredunder
warrantybythemanufacturer.Consultyourlocaldealerforservice.
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Ifitisunavoidablynecessarytodisassembleandmodify,itshouldbecarriedoutbyexpertsorpersonnelqualied
throughservicetraining.
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Makematchmarkonpartsforreassembling.
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Beforedisassembling,readinstructionsinadvance,anddetermineiftheserviceisrequiredtobeperformedbyan
authorizeddealer.
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Useappropriatespecialtytoolsandjigsifrequired.
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Ifpartscannotberemovedasspeciedbytheprocedure,neverforceremoval.Checkforotherfailuresthatmay
becausingbindingorinterference.
•
Inspectpartsforwearandclearance;recordthemeasuredvalues.Replacecomponentsifthevaluesfalloutside
oftherecommendedrange.
•
Ifanabnormalityisdetected,repairorreplacetheparts.
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Whenremovingparts,useappropriatemarkingsorlabelstoensurethycanbereinstalledinthecorrectorderand
locationwithoutconfusion.
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Forcommonparts,payattentiontothequantityandlocationsofeachgroupofcomponents.
47881872_EN24/06/2015
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