Case 821G - Basic Instructions - Precaution for Disassembly and Assembly

INTRODUCTION
Basicinstructions-Precautionfordisassemblyandassembly
Preparationsfordisassembly
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Thoroughlywashthemachinebeforebringingitintotheshop.Bringingadirtymachineintotheshopmaycause
machinecomponentstobecontaminatedduringdisassembling/assembling,resultingindamagetomachinecom-
ponents,aswellasdecreasedefciencyinservicework.
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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.
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Conrmreadyaccesstoarst-aidkitandreextinguisher,aswellasappropriateemergencypersonnelcontacts
inthecaseofamedicalaccidentorre.
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Beforeperforminganyworkonthemachine,followlockout/tagoutproceduresbyattachinga“maintenancein
progresstag”.Thistagcanbeappliedontheleft-handcontrollever,safetyleverorcabdoor.Notifythosewith
accesstothemachinethatyouwillbeperformingthemaintenance.
Disassemblingandassemblinghydraulicequipment
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Beforeremovinglines,releasethepressureofhydraulicoiltank,oropenthecoveronthereturnsidetotank,and
takeoutthelter.
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Draintheoilinremovedlinesintoanappropriatecontainertopreventoilcontamination.
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Protectopenconnectionswithplugsorcapstopreventoilfromleakinganddebrisfromcontaminatingthesystem.
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Thoroughlycleantheoutsideofcomponentsbeforedisassembling,anddrainhydraulicoilandgearoilbeforedis-
assembly.
Disassemblinghydraulicequipment
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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.
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Inspectpartsforwearandclearance;recordthemeasuredvalues.Replacecomponentsifthevaluesfalloutside
oftherecommendedrange.
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Ifanabnormalityisdetected,repairorreplacetheparts.
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Whenremovingparts,useappropriatemarkingsorlabelstoensuretheycanbereinstalledinthecorrectorderand
locationwithoutconfusion.
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Forcommonparts,payattentiontothequantityandlocationsofeachgroupofcomponents.
51428216_EN14/12/2017
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