Toro Groundsmaster 5910 Series - Page 190

GearPumpDisassembly(Figure82)(continued)
8.Removethethrustplatesandsealsfromeachpumpsection.Before
removingeachgearset,applymarkingdyetomatingteethtoretain”timing”.
Pumpefciencymaybeaffectediftheteetharenotinstalledinthesame
positionduringassembly.Keepthepartsforeachpumpsectiontogether;
donotmixpartsbetweensections.
GearPumpInspection
1.Removeanynicksandburrsfromallpartswithemerycloth.
CAUTION
Useeyeprotectionsuchasgoggleswhenusingcompressedair.
2.Cleanallpartswithsolvent.Dryallpartswithcompressedair.
3
4
1
2
3
2
2
2
4
g287892
Figure84
1.Gearshaftspline3.Gearteeth
2.Gearshaft4.Gearfaceedge
3.Inspectdrivegearsandidlergearsforthefollowing(Figure84):
A.Gearshaftsshouldbefreeofroughsurfacesandexcessivewearat
bushingpointsandsealingareas.Scoring,roughsurfacesorwearon
gearshaftsindicatesneedforreplacement.
B.Gearteethshouldbefreeofexcessivescoringandwear.Anybrokenor
nickedgearteethmustbereplaced.
C.Inspectgearfaceedgeforsharpness.Sharpedgesofgearswillmillinto
thrustplatesand,thus,mustbereplaced.
4.Inspectthrustplatesforthefollowing:
A.Bearingareasshouldnothaveexcessivewearorscoring.
B.Faceofthrustplatesthatareincontactwithgearsshouldbefreeofwear,
roughnessorscoring.
C.Thicknessofthrustplatesshouldbeequal.
5.Inspectfrontangeandrearcoverfordamageorwear.
6.Ifinternalpartsarefoundtobewornordamaged,gearpumpreplacement
isnecessary.
HydraulicSystem:ServiceandRepairs
Page5–90
Groundsmaster
®
5900&5910
16227SLRevB