Toro Groundsmaster 4100-D - Servicing the Castor Arm Bushings; Servicing the Castor Wheels and Bearings

ServicingtheCastorArm
Bushings
Thecastorarmshavebushingspressedintothetopand
bottomofthetubeandaftermanyhoursofoperation,
thebushingswillwear.Tocheckthebushings,movethe
castorforkbackandforthandfromsidetoside.Ifthe
castorspindleislooseinsidethebushings,thebushings
arewornandmustbereplaced.
1.Raisethecuttingunitsothatthewheelsareoffof
theoor.Blockthecuttingunitsothatitcannot
accidentallyfall.
2.Removethetensioningcap,spacer(s),andthrust
washerfromthetopofthecastorspindle.
3.Pullthecastorspindleoutofthemountingtube.
Allowthethrustwasherandspacer(s)toremainon
thebottomofthespindle.
4.Insertapinpunchintothetoporbottomofthe
mountingtubeanddrivethebushingoutofthetube
(
Figure81).Alsodrivetheotherbushingoutofthe
tube.Cleantheinsideofthetubestoremovedirt.
Figure81
1.Castorarmtube
2.Bushings
5.Applygreasetotheinsideandoutsideofthenew
bushings.Usingahammerandatplate,drivethe
bushingsintothemountingtube.
6.Inspectthecastorspindleforwearandreplaceitif
itisdamaged.
7.Pushthecastorspindlethroughthebushingsand
mountingtube.Slidethethrustwasherandspacer(s)
ontothespindle.Installthetensioningcaponthe
castorspindletoretainallpartsinplace.
ServicingtheCastorWheels
andBearings
ServiceInterval:Every800hours
1.Removethelocknutfromtheboltholdingthecastor
wheelassemblybetweenthecastorfork(Figure82)
orthecastorpivotarm(Figure83).Graspthecastor
wheelandslidetheboltoutoftheforkorpivotarm.
Figure82
1.Castorwheel
3.Bearing
2.Castorfork
4.Bearingspacer
Figure83
1.Castorwheel
3.Bearing
2.Castorpivotarm
4.Bearingspacer
2.Removethebearingfromthewheelhuband
allowthebearingspacertofallout(Figure82and
Figure83).Removethebearingfromtheopposite
sideofthewheelhub.
3.Checkthebearings,spacer,andinsideofthewheel
hubforwear.Replaceanydamagedparts.
4.Toassemblethecastorwheel,pushthebearinginto
thewheelhub.Wheninstallingthebearings,press
ontheouterraceofthebearing.
5.Slidethebearingspacerintothewheelhub.Pushthe
otherbearingintotheopenendofthewheelhubto
captivatethebearingspacerinsidethewheelhub.
6.Installthecastorwheelassemblybetweenthecastor
forkandsecureitinplacewiththeboltandlocknut.
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