Toro 74917 - Checking the Wheel Hub Slotted Nut; Adjusting the Caster Pivot Bearing; Using the Clutch Shim

Figure60
CheckingtheWheelHub
SlottedNut
ServiceInterval:Aftertherst100hours
Every500hours
1.Removethecotterpin.
2.Torquetheslottednutto200ft-lb(271N-m).
3.Checkthedistancefromthebottomoftheslotin
thenuttotheinsideedgeofthehole.Twothreads
(0.1inch)orlessshouldbeshowing.
Figure61
1.0.1inchmax2.Nomorethantwothreads
(0.1inchmax)shouldbe
showinghere.
4.Ifmorethantwothreads(0.1inch)areshowing,
removethenutandinstallawasherbetweenthehub
andthenut.
5.Torquetheslottednutto200ft-lb(271N-m).
6.Thentightenthenutuntilthenextsetofslotsline
upwiththecrossholeintheshaft.Donotloosen
thenuttoaligntheslot.Ifrequired,tightentothe
nextsetofslots.
7.Installthecotterpin.Useanewcotterpinifneeded.
Note:Donotuseanti-seizeonthewheelhub.
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hours/Yearly(whichever
comesrst)
1.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockedposition
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenlock
nut(Figure62).
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(Figure62).
Important:Makesurethespringwashersare
installedcorrectlyasshowninFigure62.
5.Installthedustcap(Figure62).
Figure62
1.SpringWashers3.DustCap
2.LockNut
UsingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwith
clutchesthatcontainabrakeshim.Whentheclutch
brakehasworntothepointwheretheclutchnolonger
engagesconsistently,theshimcanberemovedtoextend
theclutchlife.
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