Toro Groundmaster Series - Traction System Problems

TractionSystemProblems
Problem
PossibleCauseCorrectiveAction
Thehydraulicuidisverycold.Allowthehydraulicuidtowarmby
safelyoperatingthemachineatrest.
Thehydraulicuidlevelinthehydraulic
tankislow.
Adjustthehydraulicuidlevel.
Thetractioncontrollinkageis
incorrectlyadjusted,binding,or
damaged.
Inspecttractionlinkageoperationand
serviceoradjustifnecessary.
Thetractionpumpbypassvalveisopen
ordamaged.
Closeorreplacethetractionpump
bypassvalve.
Enginespeedislow.Increasetheenginespeed.
Thetractionpumpreliefvalvesare
leakingordamaged.
Cleanorrepairthepiston(traction)
pumpreliefvalves.
Thechargepressureislow(steering
andliftcircuitperformanceisalso
affected).
Verifychargepressure;refertoT esting
theTractionCircuit–ChargePressure
intheHydraulicSystemchapterofthis
manual.
Thetractionpumpiswornordamaged.
Verifytractionpumpoperation;refer
toTestingtheTractionCircuit–Piston
(traction)Pump(P1)FlowandRelief
PressureT estintheHydraulicSystem
chapterofthismanual.
Thewheelmotor(s)iswornor
damaged.
Verifywheelmotoroperation;referto
TestingtheTractionCircuit–Wheel
MotorEfciencyintheHydraulic
Systemchapterofthismanual.
Thetractionresponseissluggish.
Note:Ifatractioncircuitcomponent
hasinternalwearordamage,it
ispossiblethattheothertraction
componentsarealsodamaged.
Themachinetravelstoofarbefore
stoppingwhenthetractionpedalis
released.
Tractionpedallinkageoutof
adjustment,restricted,ordamaged.
Inspecttractionlinkageoperationand
serviceoradjustifnecessary.
Thetractionpumpbypassvalveisopen
ordamaged.
Closeorreplacethetractionpump
bypassvalve.
Thetractionpumpreliefvalvesare
leakingordamaged.
Cleanorrepairthepiston(traction)
pumpreliefvalves.
Neutralisdifculttondorunit
operatesinonedirectiononly(forward
orreverse).
Thetractionpumpiswornordamaged.
Verifytractionpumpoperation;refer
toTestingtheTractionCircuit–Piston
(traction)Pump(P1)FlowandRelief
PressureT estintheHydraulicSystem
chapterofthismanual.
Groundsmaster
®
3200,3300and3310
Page3–17
Troubleshooting:TractionSystemProblems
19240SLRevA