Toro Field Pro 6040 - Chapter 5: Hydraulic System

Chapter5
HydraulicSystem
TableofContents
GeneralInformation..............................................................................................................................5–3
Operator’sManual.............................................................................................................................5–3
RelievingPressurefromtheHydraulicSystem..................................................................................5–3
TowingorMovingtheMachineByHand............................................................................................5–4
TractionCircuitComponentFailure....................................................................................................5–6
HydraulicHoses.................................................................................................................................5–7
InstallingHydraulicHosesandTubes(O-RingFaceSealFitting).......................................................5–8
InstallingtheHydraulicFittings(SAEStraightThreadO-RingFittings).............................................5–10
HydraulicSchematics..........................................................................................................................5–13
HydraulicFlowDiagrams.....................................................................................................................5–14
TractionCircuit.................................................................................................................................5–14
LiftandTiltAngleCircuits.................................................................................................................5–17
TestingtheHydraulicSystem..............................................................................................................5–19
HydraulicT estSelection...................................................................................................................5–21
TestingtheTractionCircuit–ChargePressure................................................................................5–22
TestingtheTractionCircuit–WheelMotorEfciency.......................................................................5–26
TestingtheTractionCircuit–Piston(traction)PumpFlowandReliefPressure.................................5–30
TestingtheLiftandTiltAngleCircuits–GearPumpFlow.................................................................5–35
TestingtheLiftandTiltAngleCircuits–ReliefValve(RV1)Pressure................................................5–38
Adjustments........................................................................................................................................5–40
HydraulicPumpDriveBeltTension..................................................................................................5–40
AdjustingtheTractionSpeed...........................................................................................................5–41
ServiceandRepairs...........................................................................................................................5–46
GeneralPrecautionsforRemovingandInstallingtheHydraulicSystemComponents......................5–46
CheckingtheHydraulicLinesandHoses.........................................................................................5–48
FlushingtheHydraulicSystem.........................................................................................................5–49
FilteringtheClosed-loopTractionCircuit.........................................................................................5–51
PrimingtheHydraulicSystem..........................................................................................................5–54
ChargingtheHydraulicSystem........................................................................................................5–55
HydraulicReservoir..........................................................................................................................5–57
HydraulicFluidCooler......................................................................................................................5–59
Piston(Traction)Pumps...................................................................................................................5–61
ServicingthePiston(Traction)Pumps.............................................................................................5–64
GearPump.......................................................................................................................................5–65
ServicingtheGearPump.................................................................................................................5–67
WheelMotors...................................................................................................................................5–71
ServicingtheWheelMotor...............................................................................................................5–73
ControlValve....................................................................................................................................5–75
ServicingtheControlValve..............................................................................................................5–77
CenterLiftCylinder..........................................................................................................................5–79
ServicingtheCenterLiftCylinder.....................................................................................................5–81
RearLiftCylinder.............................................................................................................................5–84
ServicingtheRearLiftCylinder........................................................................................................5–86
AngleCylinder(Optional).................................................................................................................5–89
ServicingtheOptionalAngleCylinder..............................................................................................5–91
LaserLevelControlManifold(Optional)...........................................................................................5–94
ServicingtheLaserLevelControlManifold(Optional)......................................................................5–96
ServicingtheCartridgeValves.........................................................................................................5–97
FieldPro®6040
Page5–1
HydraulicSystem
22267SLRevA