GeneralInformation
Operator’sManual
TheOperator’sManualprovidesinformationregardingtheoperation,general
maintenanceandmaintenanceintervalsforyourGroundsmastermachine.Refer
tothatpublicationforadditionalinformationwhenservicingthemachine.
RelievingHydraulicSystemPressure
Beforedisconnectingorperforminganyworkonthehydraulicsystem,all
pressureinthehydraulicsystemmustberelieved.Parkmachineonalevel
surface,lowercuttingdecksfully,disengagePTOandstopengine.Removekey
fromkeyswitch.
Systempressureinmowcircuitisrelievedwhenthecuttingdecksare
disengaged.
Torelievehydraulicpressureinsteeringcircuitwithenginenotrunning,rotate
steeringwheelinbothdirections.
Torelievehydraulicpressureinliftcircuit,makesurethatengineisnotrunning
andhaveoperatorseatoccupied.TurnkeyswitchtoRUN,depresseachofthe
deckliftswitchestothedecklowerpositionandthenreleaseswitch.Returnkey
switchtotheOFFpositionafterallliftswitcheshavebeendepressed.
Torelievehydraulicpressureintractioncircuit,turnkeyswitchtoON(enginenot
running)anddepresstractionpedaltobothforwardandreversedirections.Turn
keyswitchtoOFFafterrelievingtractioncircuitpressure.
Afterallhydraulicsystempressureshavebeenrelieved,removekeyfromkey
switch.
TowingTractionUnit
g287711
Figure30
1.Pistonpump
3.Reversereliefvalve
2.Forwardreliefvalve
IMPORTANT
Iftowinglimitsareexceeded,severedamagetothepiston(traction)
pumpmayoccur.
Groundsmaster
®
5900&5910
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HydraulicSystem:GeneralInformation
16227SLRevB