Toro 30308 - Traction Circuit Component Failure

TractionCircuitComponentFailure
ThetractioncircuitoftheGroundsmaster3280-Dand3320machinesisa
closedloopsystemthatincludesthehydraulicpumpandhydraulicmotor.Ifa
componentfailureoccursinthetractioncircuit(e.g.,hydraulicpumporhydraulic
motor),unwantedmaterialandcontaminationfromthedamagedcomponentwill
circulatethroughoutthetractioncircuit.Thiscontaminationcandamageother
componentsinthecircuit,soremovethecontaminationtopreventadditional
componentfailure.
Therecommendedmethodtoremovecontaminationfromthetractioncircuitis
totemporarilyinstallaTorohighowhydraulic-uidlterintothecircuit;refer
toHighFlowHydraulicFilterKit(page5–42).Useahighowhydraulic-uid
lterwhenyouconnecthydraulictestgaugesinordertotestthetractioncircuit
componentsorafteryoureplaceafailedtractioncircuitcomponent(e.g.,
hydraulicpumporhydraulicmotor).Usingahighowhydraulic-uidlterwill
removecontaminatesfromthehydraulicuidinthetractioncircuit,thereby
preventingadditionalcomponentdamage.
AfteryouhaveinstalledtheTorohighowhydraulic-uidlterinthetraction
circuit,raiseandsupportthemachinewithallthedrivewheelsofftheground.
Then,operatethetractioncircuittoallowthehydraulicuidtoowthroughthe
circuit.Thelterremovescontaminationfromthetractioncircuitduringthe
circuitoperation.BecausetheT orohighowlterisbi-directional,thetraction
circuitcanbeoperatedinboththeforwardandreversedirection.Whenyouare
certainthatthelterhasremovedthecontaminatesfromthehydraulicuidof
thetractioncircuit,removethelter.RefertoFilteringtheClosed-LoopTraction
Circuit(MachineSerialNumberabove316000000)(page5–82)foradditional
informationonusingtheT orohighowhydraulic-uidlter.
Thealternativemethodtoremovecontaminationfromthetractioncircuitisto
disassembletheentiretractioncircuit,drainthehydraulicuid,andcleanallthe
components,tubes,andhosesinthetractioncircuit.Operatingthemachine
withcontaminantsinthetractioncircuitcouldcauseadditionaldamageto
componentsofthetractioncircuit.
Note:Thehydraulicpumpcasedraincouldallowtractioncircuitcontamination
tocontaminateotherhydrauliccircuitsonthemachine.
Groundsmaster
®
3280-D/3320
Page5–7
HydraulicSystem:GeneralInformation
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