TestingtheAuxiliaryControlCircuit-HopperTiltCylinderInternal
Leakage
g292781
Figure61
Performahoppertiltcylinderinternalleakagetestifyouidentifyahoppertilt
andlowerproblem.Thistestdeterminesifahoppertiltcylinderbeingtestedis
damaged.Thehoppertiltcylindersmustbetestedindividually.
Note:Thehoppertilt/lowercircuitoperationcanbeaffectedbythehopper
tiltcylinderbinding,extraweightonthehopper,and/orbindingofthelift
components.Ensurethattheseitemsarecheckedbeforecontinuingwiththe
hoppertiltcylinderinternalleakagetest.
TestProcedure
Note:Whenperformingthehoppertiltcylinderinternalleakagetest,thehopper
shouldbeattachedtothehopperliftarms.
1.Parkthemachineonalevelsurfaceandtiltthehopper;refertoOperator’s
Manual.
2.SwitchofthePTO,shutofftheengine,andsettheparkingbrake.
3.Securethehopperintiltposition.
4.Cleantheareaaroundthehydraulichosesendatthebarrelendofthe
hoppertiltcylinder.Disconnectthehydraulichosesfromthehoppertilt
cylinderbarrelendtting.
HydraulicSystem:TestingtheHydraulicSystem
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ProLineH800
19241SLRevB