Toro Reelmaster 5510 - Testing the Lift Circuit-Gear Pump (P4) Flow (5610-D)

TestingtheLiftCircuit–GearPump(P4)Flow(5610-D)
g216145
Figure140
Thegearpump(P4)isdesignedtosatisfytheliftcylinderneeds(atfullspeed).
Thegearpump(P4)owtestcomparesuidowatNoLoadwithuidow
UnderLoad.Adropinowunderloadofmorethan15%indicatesthegearsand
wearplatesinthepumphaveworn.Continuedoperationwithawornpumpcan
generateexcessiveheatandcausedamagetothesealsandothercomponents
inthehydraulicsystem.
SpecialEquipmentRequired:Flowmeterwithpressuregaugethathasatleasta
16L/minute(5gallons/minute)capacity.
Note:Iftheowfromgearpump(P4)islow,theoperationofalltheliftcylinders
willbeaffected.
TestProcedure
1.Parkthemachineonalevelsurfacewiththereelengageswitchoff,lowerthe
cuttingunits,shutofftheengine,mowspeedlimiterisintheMOWposition,
andsettheparkingbrake.
HydraulicSystem:TestingtheHydraulicSystem
Page6–142
Reelmaster
®
5410/5510/5610Series
15216SLRevC