Toro Groundsmaster 5900 Series - Page 158

ProcedureforDeckMotorCaseDrainLeakageTest(continued)
3.Install40GPMtester(owandpressure)inserieswiththedeckmotorand
thedisconnectedreturnhose.Makesuretheowcontrolvalveontester
isfullyopen.
4.Startengineandrunatlowidlespeed.Checkforhydraulicleaksattester
connectionsandmakecorrectionsifnecessarybeforeproceedingwithtest.
5.Increaseenginespeedandmakesurehydraulicoilisatnormaloperating
temperature(54to66ºC(130to150ºF))byoperatingthemachinefor
approximatelyten(10)minutes.Stopengineandremovekeyfromkey
switch.
6.Chockthewheelssothatthemachinewillnotmoveduringtesting.
7.Forthedeckmotortobetested,disconnectthemotorcasedrainhose(small
diameterhose)whereitconnectstothefrontPTOmanifoldteettingor
hydraulictubeatthesidePTOmanifold(notatthemotor).Putasteelcapon
theopenteettingortubeconnection;leavethecasedrainhoseopen.
CAUTION
CuttingdeckbladeswillrotatewhenloweredwithPTOswitchin
ONposition.Keepawayfromcuttingdecksduringtesttoprevent
personalinjuryfromrotatingblades.Donotstandinfrontofthe
machineduringtest.
8.Sitonseat,starttheengineandincreaseenginespeedtohighidlespeed
(2530RPM).Engagecuttingdecks.Donotdepressthetractionpedalduring
testingprocedure.
9.Whilewatchingtesterpressuregauge,haveasecondpersonslowlyclose
owcontrolvalveontesteruntilapressureof83bar(1200PSI)isobtained.
Note:Useagraduatedcontainer,specialtoolTOR4077,tomeasurecase
drainleakage.
g031767
Figure65
10.Havethesecondpersonmeasureowfromtheopencasedrainhosefor
fteen(15)seconds,thendisengagethecuttingdecks,openowcontrol
valveontesterandstoptheengine.Recordtestresults.
TESTRESULTS:Casedrainleakageshouldbelessthan672ml(23ounces)
ofhydraulicuidinfteen(15)seconds.
11.Ifcasedrainowismorethan672ml(23ounces),thedeckmotorisworn
ordamagedandshouldberepairedorreplaced.
HydraulicSystem:Testing
Page5–58
Groundsmaster
®
5900&5910
16227SLRevB