Toro 74901 - Adjusting the Caster Pivot Bearing; Using the Clutch Shim

Figure63
1.0.1inchmax2.Nomorethantwothreads
(0.1inchmax)shouldbe
showinghere.
4.Ifmorethantwothreads(0.1inch)areshowing
removenutandinstallwasherbetweenhuband
nut.
5.Torquetheslottednutto200ft-lb(271N-m).
6.Thentightennutuntilthenextsetofslotsline
upwiththecrossholeinshaft.Donotloosen
nuttoaligntheslot.Ifrequired,tightentothe
nextsetofslots.
7.Installanewcotterpin.
Note:DoNotuseanti-seizeonwheelhub.
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hours/Yearly(whichever
comesrst)
1.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockedposition
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenlock
nut(
Figure64).
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(Figure64).
Important:Makesurethespringwashersare
installedcorrectlyasshowninFigure64.
5.Installthedustcap(Figure64).
Figure64
1.SpringWashers3.DustCap
2.LockNut
UsingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwithclutches
thatcontainabrakeshim.Whentheclutchbrakehas
worntothepointwheretheclutchnolongerengages
consistently,theshimcanberemovedtoextendthe
clutchlife.
Figure65
1.Armature5.Brakespacer
2.Fieldshell6.Re-gapshim
3.Rotor7.Brakepole
4.Brakemountingbolt
RemovingtheClutchShim
1.Stoptheengine,waitforallmovingpartstostop,
andremovethekey.Engagetheparkingbrake.
Allowthemachinetocoolcompletelybeforestarting
theseinstructions.
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