Toro Groundmaster Series - Page 116

Wheelmotorefciencyisthesecondinaseriesoftestsrecommendedto
determinetractioncircuitperformance.Toomuchhydraulicuidowthrougha
singlestationarywheelmotorunderloadindicatesaninternalleakinthewheel
motor.Awornwheelmotorislessefcient.Eventually,enoughuidby−passwill
causethewheelmotortostallunderheavyloadconditions.Continuedoperation
cangenerateexcessiveheat,causedamagetosealsandothercomponentsin
thehydraulicsystem,andaffectoverallmachineperformance.
Therearemomentsduringwheelmotoroperation(gerollerposition)whenuid
owthroughthemotorislessrestricted.Ifawheelmotoristestedinthis
position,thetestresultswillbehighershouldnotbeusedtodeterminewheel
motorefciency.T estwheelmotorsinthree(3)differentwheelpositionstoobtain
accuratetestresults.Recordtestreadingsforallthree(3)wheelpositionsand
usetheaverageforthenaltestresult.
SpecialEquipmentRequired:
•Flowmeterwithpressuregaugethathasatleasta57L/minute(15
gallons/minute)capacity.
•2HydraulicHoses
IMPORTANT
RefertoTractionCircuitComponentFailure(page5–5)for
informationregardingtheimportanceofremovingcontamination
fromthetractioncircuit.
1.Parkthemachineonalevelsurface,lowerthecuttingunit(orattachment),
andsetthekeyswitchtotheOFFposition.
2.ReadandadheretotheinformationprovidedinT estingtheHydraulicSystem
(page5–22).
3.EnsurethatthetractionpedaliscorrectlyadjustedfortheNEUTRALposition;
refertoAdjustingtheTractionSystemforNeutral(page5–50).Also,ensure
thatthehydraulicpumpisatfullstrokewhentractionpedalispressedfullyin
forwardposition.
4.Attachaheavychaintotherearofthemachineframeandanimmovable
objecttopreventthemachinefrommovingduringtesting.Removeasmuch
slackinthechainaspossible.
5.Blockthewheelbeingtestedwithachocktopreventthewheelfromrotating
duringtesting.
TestProcedure–FrontWheelMotor
Toaccuratelytestafrontwheelmotorona2WDmachine,thefrontwheelmotor
notbeingtestedmustbedisconnectedfromthetractioncircuit.
Toaccuratelytestafrontwheelmotorona4WDmachine,thefrontwheelmotor
notbeingtestedandtherearwheelmotorontheoppositesideofthefrontmotor
beingtestedmustbedisconnectedfromthetractioncircuit.
1.Cleanthettingsandthehydraulictubeshown;refertoFigure31.
HydraulicSystem:TestingtheHydraulicSystem
Page5–30
Groundsmaster
®
3200,3300and3310
19240SLRevA