Toro Groundsmaster 4300-D - Page 138

TestProcedure(continued)
3.Liftandsupporttheoperatorseattogetaccesstothehydraulicpump
assembly.
Figure72
1.Gearpump(P3)
2.Hydraulictube
4.Cleanbothendsofthehydraulictubethatconnectsthechargelteroutlet
withthetractionpump(Figure72).Disconnectbothendsofthehydraulic
tubeandremoveitfromthemachine.Plugbothendsoftheremoved
hydraulictubetopreventsystemcontamination.
IMPORTANT
Ensurethattheuidowindicatorarrowontheowmeteris
showingthattheuidwillowfromthehydraulictube,throughthe
tester,andintothetractionpump.
5.Installatesterwiththepressuregaugeandowmeterinplaceofthe
removedhydraulictube.Connectthetesterinlethosetothechargelter
ttingandoutlethosetothetractionpumptting.Ensurethattheowcontrol
valveonthetesterisfullyopen.
6.Ensurethatthehydraulicuidisatnormaloperatingtemperatureby
operatingthemachineforatleast10minutes.
7.EnsurethatthetractionpedalisintheNEUTRALposition,steeringwheelis
stationary,andparkingbrakeisset.
8.Starttheengineandrunitatlow-idlespeed(1,175to1,225rpm).Checkfor
hydraulic-uidleaksfromthetestconnectionsandcorrectbeforecontinuing
thetest.
9.Withtheenginerunning,presstheenginespeedswitchtofullspeed(3,005
to3,055rpm)position.UsetheInfoCentertocheckthattheenginespeedis
correct.
10.VerifythepumpowatNoLoadasfollows:
Recordthetesterpressureandowreadingsatnoload.Unrestrictedpump
outputshouldbeapproximately18.5L/minute(4.9gallons/minute).
HydraulicSystem:TestingtheHydraulicSystem
Page4–76
Groundsmaster
®
4300-D
16226SLRevC