Toro 74925 - Checking the Wheel Hub Slotted Nut; Adjusting the Caster Pivot Bearing

Figure61
CheckingtheWheelHub
SlottedNut
ServiceInterval:Aftertherst100hours
Every500hours
See
Figure62todeterminewhichslottednuthasbeen
installedontheunit.
Figure62
1.StyleA(blacknish)3.StyleB(yellowzinc)
2..03inch(.76mm)4..24inch(6mm)
•StyleA(blacknish):
Torquetheslottednutto211-260ft-lb(286-352
N-m).
Note:DoNotuseanti-seizeonwheelhub.
•StyleB(yellowzinc):
1.Removeanddiscardthecotterpin.
2.Torquetheslottednutto200ft-lb(271N-m).
3.Checkdistancefrombottomofslotinnutto
insideedgeofhole.Twothreads(0.1inch)or
lessshouldbeshowing.
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).
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