Toro Greensmaster 3120 - Page 131

DisassemblingtheGearPump(continued)
8.Cleanallparts.Checkallcomponentsforburrs,scoring,nicksandother
damage.
9.Replacetheentirepumpassemblyifanypumpcomponentsareexcessively
wornorscored.
InspectingtheGearPump
1.Removeanynicksandburrsfromallpartswithemerycloth.
CAUTION
Usegogglesorotherappropriateeyeprotectionwhenusing
compressedairfordryingparts.
2.Cleanallpartswithsolvent.Dryallpartswithcompressedair.
g217568
Figure55
1.Gearshaftspline
5.Thrustplate
2.Gearshaft
6.Frontcover
3.Gearteeth
7.Endcover
4.Gearfaceedge
3.Inspectthedrivegearsandtheidlergears;refertoFigure55:
A.Thegearshaftsshouldbefreeofroughsurfacesandexcessivewearat
thebushingpointsandthesealingareas.Scoring,roughsurfacesor
wearonthegearshaftsindicatestheneedforpumpreplacement.
B.Thegearteethshouldbefreeofexcessivescoringandwear.Brokenor
nickedgearteethindicatestheneedforpumpreplacement.
C.Inspectthegearfaceedgeforsharpness.Sharpedgesofthegears
willcutintowearplates,andtherefore,indicatetheneedforpump
replacement.
4.Inspectthethrustplates:
A.Thebearingareasshouldnothaveexcessivewearorscoring.
B.Thefaceofthethrustplatethatcontactsthegearsshouldbefreeof
wear,roughnessorscoring.
C.Thethicknessofeachsetofthrustplatesshouldbeequal.
5.Inspectthefrontcoverandtherearcoverfordamageorwear.
Greensmaster3120
Page4–85
HydraulicSystem:ServiceandRepairs
17230SLRevC