Toro Greensmaster 3120 - Page 110

Steering/LiftCircuitTesting–LoweringCuttingUnitsRelief
ValveTest(continued)
SpecialEquipmentRequired:
•FlowMeterwithPressureGaugethathasatleasta16LPM(5GPM)capacity.
•Phototach(non−contacttachometer).
1.Parkmachineonalevelsurfacewiththecuttingunitslowered.Makesure
engineisOFFandtheparkingbrakeisengaged.
2.ReadandadheretotheinformationprovidedinT estingtheHydraulicSystem
(page4–35).
3.Measureandrecordthesystemchargepressure(withoutload).Referto
TractionCircuitT esting–ChargePressureT est(page4–38)foradditional
information.
g216910
Figure43
1.Gearpumpsection(P3)
2.Hydraulichose
4.Disconnecthoseconnectiononthebottomofgearpump(P3);refertoFigure
43.
5.Installtesterbetweenthegearpumpandthedisconnectedhose.Make
surethetesterisinstalledinthecorrectowdirectionandthetesterow
controlvalveisfullyopen.
6.Startengine.Movethrottletofullspeed(2850±50RPM).
7.Makesurehydraulicuidisatnormaloperatingtemperaturebyoperatingthe
machineforapproximately10minutes.
8.Verifyandrecordenginespeedwithaphototach.
9.Makesurethatcuttingunitsarefullyloweredandthenengagethecutting
units.
HydraulicSystem:TestingtheHydraulicSystem
Page4–64
Greensmaster3120
17230SLRevC