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久保田U20-3 U25-3挖掘机工厂手册 英文.pdf

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WORKSHOPMANUAL

KUBOTAEXCAVATOR

U20-3

U25-3

CodeNo.97899-60740

ssCONTENTS

IGeneral

IIMachinebody

•MechanismSectionII-M-1

•ServiceSectionII-S-1

IIIEngine

•05-MSeriesEngineIII-1

•MechanismSectionIII-M-1

•ServiceSectionIII-S-1

IVHydraulicSystem

•MechanismSectionIV-M-1

•ServiceSectionIV-S-1

VElectricalSystem

•MechanismSectionV-M-1

•ServiceSectionV-S-1

U20-3,U25-3WSMGeneral

I.General

A.BodyandengineidentificationmarksI-2

B.Safetyprecautionsforservicing,disassemblyandreassemblyI-3

a.SafetymeasuresbeforestartingworkI-3

b.SafetymeasuresduringworkI-3

c.PreparationfordisassemblyI-4

d.PrecautionsfordisassemblyandreassemblyI-4

C.IMPORTANTSAFETYPROCESSANDCRITICALFUNCTIONALPROCESSI-5

a.EssentialAdhesivesI-5

b.ImportantSafetyProcessSI-5

c.ImportantCriticalFunctionalProcessAI-5

D.IMPORTANTINSPECTIONITEMSAFTERREASSEMBLINGI-5

E.SERVICINGFUNDAMENTALSI-6

a.ItemsforServicingI-6

b.O-ring,Oilseal,CirclipandRollPinI-8

c.PipingI-10

d.MachineQualitySpecificationsI-15

F.MaintenanceintervalsI-23

a.MaintenanceintervalschartI-23

b.HydraulicOilCheckformachineswithHydraulicBreakersI-24

c.PeriodicreplacementofimportantpartsI-25

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