Toro Groundsmaster 360 - Page 101

Performthechargereliefvalvepressuretestifyouidentifyatractioncircuit
problem.Thistestdeterminesifthetractionchargecircuitoperatescorrectly.
TestProcedure
1.Ensurethatthehydraulicuidisatnormaloperatingtemperature.
2.EnsurethatthetractiondriveiscorrectlyadjustedfortheNEUTRALposition.
CAUTION
Beforeopeningthehydraulicsystem,operateallthehydraulic
controlstoreleasesystempressureandavoidinjuryfromthe
pressurizedhydraulicuid;refertoReleasingPressurefromthe
HydraulicSystem(page4–5).
g036196
Figure44
3.Parkthemachineonalevelsurface,lowerthecuttingdeck,shutoffthe
engine,andsettheparkingbrake.
4.ReadallWarning,Cautions,andprecautionslistedatthebeginningofthis
section.
5.Cleanthecharge-pressuretestportontherightsideofthetransmission
(Figure44).
6.Connecta6,900kPa(1,000psi)hydraulic-pressuregaugewithanattached
hydraulichosetothetransmissioncharge-pressureport.
7.Starttheengineandrunitatlow-idlespeed(1,400rpm).Checkfor
hydraulic-uidleaksfromthetestconnectionsandcorrectbeforecontinuing
thetest.
8.Withenginerunning,presstheenginespeedswitchtofullspeed(3,000
rpm)position.Thepressuregaugereadingshouldbe720to930kPa(105
to135psi).Recordthetestresult.
9.Ifthechargereliefpressurespecicationisnotmet,considerthefollowing
transmissionissues(refertoServicingtheTransmission(page4–98)):
A.Thetransmissionchargereliefvalveisdamaged.Repairorreplacethe
charge-reliefvalve.
Groundsmaster360
Page4–43
HydraulicSystem:TestingtheHydraulicSystem
16225SLRevC