Toro Groundsmaster 4500-D Series - Page 198

ChargeHydraulicSystem(continued)
C.Faultychargereliefvalve.
D.Faultygearpump.
9.Oncetheliftcylinderdoesmoveinten(10)tofteen(15)seconds,proceed
tostep10.
10.Operatethetractionpedalintheforwardandreversedirections.Thewheels
shouldrotateintheproperdirection.
A.Ifthewheelsrotateinthewrongdirection,stopengineandcheckfor
properhydraulichoseandelectricalconnectionsattractionpumpand
motors.Correctasneeded.
B.Ifthewheelsrotateintheproperdirection,stoptheengine.
11.Makesurethattractionpedalreturnstotheneutralpositionwhenreleased
fromtheforwardorreversedirection.
12.Checkoperationofthetractioninterlockswitch(seeCheckOperationof
InterlockSwitches(page6–24)).
13.WithenginenotrunningandignitionswitchintheOFFposition,removejack
standsthataresupportingthemachineandlowerthemachinetotheground.
14.Ifthepiston(traction)pumporatractionmotorwasreplacedorrebuilt,run
themachinesoallwheelsturnslowlyforten(10)minutes.
15.Operatemachinebygraduallyincreasingitsworkloadtofulloveraten(10)
minuteperiod.
16.Stopthemachine.Checkhydraulicreservoirandllifnecessary.Check
hydrauliccomponentsforleaksandtightenanylooseconnections.
HydraulicSystem:ServiceandRepairs
Page5–96
Groundsmaster
®
4500-D/4700-D
19245SLRevA