Toro 74291 - Checking the Wheel Hub Slotted Nut; Adjusting the Caster Pivot Bearing

Maintaintheairpressureinthefrontandreartiresat
13psi(90kPa).Uneventirepressurecancauseuneven
cut.Checkthetireswhentheyarecoldtogetthemost
accuratepressurereading(Figure39).
Figure39
CheckingtheWheelHub
SlottedNut
ServiceInterval:Every100hours
Theslottednutneedstobetorquedto125ft-lb
(170N⋅m).
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethecotterpin.
4.Torquetheslottednutto125ft-lb(170N⋅m)
(Figure40).
Figure40
1.SlottedNut3.Holeinthreadedshaft
2.Twothreadsorless
showing
4.Washer(ifneeded)
5.Checkthedistancefrombottomofslotinnutto
insideedgeofhole.Twothreadsorlessshouldbe
showing(Figure40).
6.Ifmorethantwothreadsareshowingremovenut
andinstallwasherbetweenhubandnut.
7.Torquetheslottednutto125ft-lb.(170N⋅m)
(Figure40).
8.Tightenthenutuntilthenextsetofslotslineupwith
theholeintheshaft(Figure40).
9.Replacethecotterpin.
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hoursoratstorage,which
evercomesrst.
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenlock
nut(Figure41).
Figure41
1.SpringWashers3.DustCap
2.LockNut
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(Figure41).
Important:Makesurespringwashersare
installedcorrectlyasshowninFigure41.
5.Installthedustcap(Figure41).
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