Toro ProLine H800 Service Manual

GeneralHydraulicSystemProblems
Problem
PossibleCauseCorrectiveAction
Thetting(s),hose(s),ortube(s)are
looseordamaged.
Secureorreplacelooseordamaged
hydraulicconnections.
Hydraulicuidisleakingfromthe
system.
TheO-ring(s)orseal(s)aremissingor
damaged.
InstallanewO-ring(s)orseal(s).
Thehydraulicuidlevelinthehydraulic
tankislow.
Adjustthehydraulicuidlevel.
Thehydraulicsystemhasawrong
typeofuid.
Note:Refertothetractionunit
Operator’sManualforhydraulicuid
specications.
Replacethehydraulicuid.
Theincompatiblehydraulicuidsare
mixedinthesystem.
Replacethehydraulicuid.
Thereiswaterinthehydraulicsystem.
Replacethehydraulicuid.
Thehydraulicuidfoamsexcessively
causinguidleakagefromthehydraulic
tankbreather.
Thepumpsuctionlinehasanairleak.Replacethepumpsuctionline.
Thetractionsystempressureishigh
duetoload.
Checkandadjusttheload.
Thehydraulicuidlevelinthetankis
low.
Adjustthehydraulicuidlevel.
Thehydraulicuidiscontaminatedor
theuidviscosityistoolight.
Replacethehydraulicuid.
Theoilcoolerisdamagedorplugged.
Repairorreplacethehydraulicuid
cooler.
Theoilcoolerairowisobstructed.Verifycoolingfanoperationandremove
debrisfrominandaroundtheuid
cooler.
Theoillterisplugged.Replacetheoillter.
Thehydraulicpumpbypassvalveis
openordamaged.
Closeorreplacethetractionpump
bypassvalve(s).
Thehydrostat/hydraulicpumpcheck
valveisnotseatingorisdamaged.
Checkandreplacethecheckvalve.
Thechargepressureislow.
Verifythechargepressure.
Thehydrostat/hydraulicpumpisworn
ordamaged.
Verifythetractionpumpoperationand
replaceifnecessary.
Thehydraulicsystemoperateshot.
EngineRPMistoolow.IncreasetheengineRPM.
ProLineH800Page3–3Troubleshooting:GeneralHydraulicSystemProblems
19241SLRevB

Toro ProLine H800 Specifications

General

Brand	Toro
Model	ProLine H800
Category	Lawn Mower
Language	English