Toro Groundsmaster 4300-D - Page 125

TestProcedure
1.Ensurethatthehydraulicuidisatnormaloperatingtemperatureby
operatingthemachineforatleast10minutes.
2.Determinewhichofthedeckmotorissuspectandbegintestingwiththat
motor.
3.ParkthemachineonalevelsurfacewiththePTOswitchoff,lowerthecutting
decks,shutofftheengine,mowspeedlimiterisintheMOWposition,and
settheparkingbrake.
CAUTION
Beforeopeningthehydraulicsystem,operateallthehydraulic
controlstoreleasesystempressureandavoidinjuryfromthe
pressurizedhydraulicuid;refertoReleasingPressurefromthe
HydraulicSystem(page4–6).
4.ReadallWarning,Cautions,andprecautionslistedatthebeginningofthis
section.
g189654
Figure64
1.Returnhose
2.Casedrainhose
Note:Thedeckmotorsareconnectedinseries.Ifadamageddeckmotor
isnotobvious(basedonqualityofcutissues)youmayhavetotestall3
motorsinthecircuit.Iftestingallcuttingdeckmotors,startwiththerst
motorintheseries(frontleft).
5.Forthedeckmotorthatistobetested,cleanthejunctionofthemotorcase
drainhose(smalldiameterhose)whereitisconnectedtothetractionunit
bulkhead(notatthemotor)(Figure64).
6.Disconnectthecasedrainhoseandputasteelcaponthettingatthe
tractionunit.Leavethecasedrainhosefromthemotoropenandplacethe
openendofthedisconnectedhoseintoadrainpan.
IMPORTANT
Ensurethattheuidowindicatorarrowontheowgaugeis
showingthattheuidwillowfromthedeckmotor,throughthe
tester,andintothereturnhose.
Groundsmaster
®
4300-D
Page4–63
HydraulicSystem:TestingtheHydraulicSystem
16226SLRevC