Toro Groundsmaster 360 Service Manual

Chapter4
HydraulicSystem
TableofContents
Specications.......................................................................................................................................4–3
HydraulicSystem...............................................................................................................................4–3
GeneralInformation..............................................................................................................................4–4
PushingtheTractionUnit...................................................................................................................4–4
ReleasingPressurefromtheHydraulicSystem.................................................................................4–5
TractionCircuitComponentFailure....................................................................................................4–6
HydraulicHoses.................................................................................................................................4–7
InstallingtheHydraulicHoseandTube(O-RingFaceSealFitting).....................................................4–8
InstallingtheHydraulicFittings(SAEStraightThreadO-RingFittingintotheComponent
Port)...................................................................................................................................................4–9
HydraulicSchematics..........................................................................................................................4–13
HydraulicFlowDiagrams.....................................................................................................................4–14
TractionCircuits...............................................................................................................................4–15
SteeringCircuit................................................................................................................................4–19
Lift/LowerCircuit:Raise...................................................................................................................4–22
Lift/LowerCircuit:Lower..................................................................................................................4–24
PTOCircuit......................................................................................................................................4–26
SpecialTools.......................................................................................................................................4–27
HydraulicPressureTestingKit.........................................................................................................4–27
15GPMHydraulicTesterKit(PressureandFlow)............................................................................4–27
40GPMHydraulicT ester(PressureandFlow).................................................................................4–28
HydraulicHoseKit...........................................................................................................................4–29
O-RingKit........................................................................................................................................4–29
HighFlowHydraulicFilterKit...........................................................................................................4–30
HydraulicTestFittingKit...................................................................................................................4–30
WheelHubPuller.............................................................................................................................4–31
RemoteStarterSwitch.....................................................................................................................4–31
Troubleshooting...................................................................................................................................4–34
GeneralHydraulicSystemProblems...............................................................................................4–34
TractionCircuitProblems.................................................................................................................4–35
PTOCircuitProblems......................................................................................................................4–37
SteeringandLift/LowerCircuitProblems.........................................................................................4–38
TestingtheHydraulicSystem..............................................................................................................4–39
TestingtheTractionSystemOperation............................................................................................4–40
TestingtheChargeReliefValvePressure(UsingPressureGauge)..................................................4–42
TestingtheTractionReliefValvePressure(UsingPressureGauge)................................................4–45
TestingtheTransmissionPistonPumpFlow(UsingT esterwithPressureGaugesandFlow
Meter)...............................................................................................................................................4–48
TestingtheRearWheelMotorEfciency(UsingT esterwithPressureGaugesandFlow
Meter)...............................................................................................................................................4–52
TestingthePTOPressureValve(UsingPressureGauge)................................................................4–56
TestingtheImplementReliefPressure(UsingPressureGauge)......................................................4–59
TestingtheGearPumpFlow(UsingT esterwithPressureGaugesandFlow
Meter)...............................................................................................................................................4–62
TestingtheLiftCylinderforInternalLeakage....................................................................................4–65
ServiceandRepairs...........................................................................................................................4–68
GeneralPrecautionsforRemovingandInstallingtheHydraulicSystemComponents......................4–68
CheckingtheHydraulicLinesandHoses.........................................................................................4–69
Groundsmaster360
Page4–1
HydraulicSystem
16225SLRevC

Toro Groundsmaster 360 Specifications

General

Brand	Toro
Model	Groundsmaster 360
Category	Lawn Mower
Language	English