Toro Greensmaster 3120 - Page 88

TractionCircuitTesting–ChargePressureTest(continued)
•Formachineswithoutbacklap,connectapressuregaugewithhydraulic
hosetothetestconnectorintheG3portofthemowermanifold;refer
toFigure27.
•Forearlymachineswithbacklap,disconnectthehosefromtheelbowatthe
PTportofthemowermanifoldandinstallaswivelteeandtestconnector
tting.Connectapressuregaugewithhydraulichosetothenewlyinstalled
testconnector;refertoFigure28.
•Forlatermachineswithbacklap,connectapressuregaugewithhydraulic
hosetothetestconnectoratthePTportofthemowermanifold;refer
toFigure29.
g215375
Figure30
1.Tractionpump
2.Hosefromtractionpump“A”port
5.Disconnecthosefromtractionpump“A”port;refertoFigure30.
6.Installtesterinserieswiththepumpandthedisconnectedhose.Makesure
thetesterisinstalledinthecorrectowdirectionandthetesterowcontrol
valveisfullyopen.
7.Attachaheavychaintotherearofthemachineframeandanimmovable
objecttopreventthemachinefrommovingduringtesting.
8.Chockthewheelstopreventwheelrotationduringtesting.
9.Startengine.Movethrottletofullspeed(2850±50RPM).
10.Makesurehydraulicuidisatnormaloperatingtemperaturebyoperatingthe
machineforapproximately10minutes.
11.Verifyandrecordenginespeedwithaphototach.
12.RecordthereadingonpressuregaugefromthePTportofthemower
manifold(notthepressuregaugeontheowmeter).Chargepressure
(withoutload)shouldreadapproximately414kPa(60PSI).Ifchargerelief
pressurespecicationisnotmet,considerthefollowing:
HydraulicSystem:TestingtheHydraulicSystem
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Greensmaster3120
17230SLRevC