Toro 74253CP - Checking the Tire Pressure; Checking the Wheel Hub Slotted Nut; Adjusting the Caster Pivot Bearing

Figure50
1.Trackingknob4.Turnthiswaytotrackright
2.Hydraulictank
5.Turnthiswaytotrackleft
3.Hydraulicpumps
CheckingtheTirePressure
ServiceInterval:Every50hours(ormonthly,which
evercomesrst).
Maintaintheairpressureinthereartiresat13psi(90
kPa).Uneventirepressurecancauseunevencut.Check
thetireswhentheyarecoldtogetthemostaccurate
pressurereading.
Note:Thefronttiresaresemi-pneumatictiresanddo
notrequireairpressuremaintenance.
Figure51
CheckingtheWheelHub
SlottedNut
ServiceInterval:Every500hours
Theslottednutneedstobetorquedto125ft-lb
(170N-m).
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethecotterpin.
4.Checkthedistancefrombottomofslotinnutto
insideedgeofhole.Twothreadsorlessshouldbe
showing(Figure52).
Figure52
1.SlottedNut3.Holeinthreadedshaft
2.Twothreadsorless
showing
4.Washer(ifneeded)
5.Ifmorethantwothreadsareshowingremovenut
andinstallwasherbetweenhubandnut.
6.Torquetheslottednutto125ft-lb.(170N-m)
(Figure52).
7.Tightenthenutuntilthenextsetofslotslineupwith
theholeintheshaft(Figure52).
8.Replacethecotterpin.
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hoursoryearly,whichever
comesrst.
Yearlyorbeforestorage
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
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