Toro 08743 - Page 99

TestProcedure(continued)
g354951
Figure32
1.Hydraulicuidcooler
3.Hydraulictube
2.Hydraulichose4.Hydraulichose
8.Disconnectthehosefromthettingattheuidcooler,theninstallateetting
withthepressuregaugebetweenthettinganddisconnectedhose.
9.Disconnectthehydraulichoseatthehydraulictubeabovethefrontwheel
motor.Useanadditionalhydraulichosetoinstallthetestertotheexposed
ttings.Makesurethetesterisinstalledinthecorrectowdirection(toward
thefrontwheelmotor)andthetesterowcontrolvalveisfullyopen.
10.Attachaheavychaintotherearofthemachineframeandanimmovable
objecttopreventthemachinefrommovingduringtesting.
11.Blockthefrontwheelwithchockstopreventthewheelfromrotatingduring
testing.
12.Starttheengineandrunitatlow-idlespeed.Correctanyhydraulicuidleaks
atthetestconnectionsbeforecontinuingthetest.
13.Setthethrottletothefullspeed(3,400to3,500RPM).Verifytheengine
RPMatthedrivehubsorrubbercouplingwithanon-contacttachometer
(phototach).
14.Makesurehydraulicuidisatnormaloperatingtemperaturebyoperatingthe
machineforapproximately10minutes.
15.Recordthereadingonthepressuregaugeattheuidcooler(notthepressure
gaugeontheowmeter).Thechargepressure(withoutload)shouldread
approximately690kPa(100psi).Ifthechargepressurespecicationisnot
met,considerthefollowing:
SandPro
®
3040and5040
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HydraulicSystem:TestingtheHydraulicSystem
20251SLRevA