Toro Reelmaster 3100-D - Traction Unit Testing − Wheel Motor Efficiency Tests

TractionUnitTesting−WheelMotorEfciencyTests
g344969
Figure39
Model03171(shown)
Wheelmotorefciencyisthesecondinaseriesoftestsrecommendedto
determinetractioncircuitperformance.Hydraulicuidowof5.7LPM(1.5GPM)
ormorethroughastationarywheelmotorunderloadindicatesaninternalleak
inthewheelmotor.Awornwheelmotorislessefcient.Eventually,enough
uidby−passwillcausethewheelmotortostallunderheavyloadconditions.
Continuedoperationcangenerateexcessiveheat,causedamagetoseals
andothercomponentsinthehydraulicsystem,andaffectoverallmachine
performance.
Therearemomentsduringwheelmotoroperation(gerollerposition)whenuid
owthroughthemotorislessrestricted.Ifawheelmotoristestedinthis
position,thetestresultswillbehighershouldnotbeusedtodeterminewheel
motorefciency.T estwheelmotorsinthree(3)differentwheelpositionstoobtain
accuratetestresults.Recordtestreadingsforallthree(3)wheelpositions.
Hydraulicuidowsthroughbothfrontwheelmotors(inparallel)beforepassing
throughtherearwheelmotor(inseries).Inthisconguration,therearwheel
motorcanmaskfrontwheelmotorperformanceissues,andthefrontwheel
motorscanmaskrearwheelmotorperformanceissues.Startbytestingboth
frontwheelmotorstogether,thenindividuallyifnecessary.Finishbytesting
therearwheelmotor.
SpecialEquipmentRequired:
•PressureGauge
•FlowMeterwithPressureGaugethathasatleastan68LPM(18GPM)
capacity
•Phototach(non−contacttachometer)
HydraulicSystem:Testing
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Reelmaster
®
3100-D/3105-D
20252SLRevA