Toro 74268CP - Checking the Tire Pressure; Checking the Wheel Hub Slotted Nut; Adjusting the Caster Pivot Bearing

CheckingtheTirePressure
ServiceInterval:Every50hoursormonthly,whichever
occursrst.
Checkthepressureatthevalvestem(Figure54).
Maintaintheairpressureinthereartiresat13psi(90
kPa).Uneventirepressurecancauseunevencut.Check
thetireswhentheyarecoldtogetthemostaccurate
pressurereading.
Note:Thefronttiresaresemi-pneumatictiresanddo
notrequireairpressuremaintenance.
Figure54
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)
(Figure55).
5.Checkthedistancefrombottomofslotinnutto
insideedgeofhole.Twothreadsorlessshouldbe
showing(Figure55).
6.Ifmorethantwothreadsareshowingremovenut
andinstallwasherbetweenhubandnut.
7.Torquetheslottednutto125ft-lb.(170N-m)
(Figure55).
8.Tightenthenutuntilthenextsetofslotslineupwith
theholeintheshaft(Figure55).
9.Replacethecotterpin.
Figure55
1.SlottedNut3.Holeinthreadedshaft
2.Twothreadsorless
showing
4.Washer(ifneeded)
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hoursoratstorage,which
evercomesrst.
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenlock
nut(Figure56).
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(Figure56).
Important:Makesurespringwashersare
installedcorrectlyasshowninFigure56.
5.Installthedustcap(Figure56).
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