Toro Groundsmaster 4010-D - Servicing the Castor Arm Bushings; Servicing the Castor Wheels and Bearings

Repositiontheshims,asrequired,toraiseorlowerthe
castorwheeluntilthecuttingunithasthecorrectpitch.
Figure79
1.Tensioningcap4.Axlemountingholes
2.Spacers5.Castorwheel
3.Shims
2.Installthetensioningcap.
ServicingtheCastorArm
Bushings
Thecastorarmshavebushingspressedintothetopand
bottomofthetubeandaftermanyhoursofoperation,the
bushingswillwear.Tocheckthebushings,movethecastor
forkbackandforthandfromsidetoside.Ifthecastor
spindleislooseinsidethebushings,thebushingsareworn
andmustbereplaced.
1.Raisethecuttingunitsothatthewheelsareoffof
theoor.Blockthecuttingunitsothatitcannot
accidentallyfall.
2.Removethetensioningcap,spacer(s),andthrust
washerfromthetopofthecastorspindle.
3.Pullthecastorspindleoutofthemountingtube.
Allowthethrustwasherandspacer(s)toremainon
thebottomofthespindle.
4.Insertapinpunchintothetoporbottomofthe
mountingtubeanddrivethebushingoutofthetube
(Figure80).Alsodrivetheotherbushingoutofthe
tube.Cleantheinsideofthetubestoremovedirt.
Figure80
1.Castorarmtube
2.Bushings
5.Applygreasetotheinsideandoutsideofthenew
bushings.Usingahammerandatplate,drivethe
bushingsintothemountingtube.
6.Inspectthecastorspindleforwearandreplaceitifit
isdamaged.
7.Pushthecastorspindlethroughthebushingsand
mountingtube.Slidethethrustwasherandspacer(s)
ontothespindle.Installthetensioningcaponthe
castorspindletoretainallpartsinplace.
ServicingtheCastorWheels
andBearings
ServiceInterval:Every800hours
1.Removethelocknutfromtheboltholdingthecastor
wheelassemblybetweenthecastorfork(Figure81)
orthecastorpivotarm(Figure82).Graspthecastor
wheelandslidetheboltoutoftheforkorpivotarm.
Figure81
1.Castorbolt
3.Bearing
2.Castorfork
4.Bearingspacer
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