Toro 74269 - Tire and Bearing Maintenance; Checking the Tire Pressure; Checking Wheel Hub Slotted Nut; Adjusting Caster Pivot Bearing

CheckingtheTirePressure
ServiceInterval:Every50hours/Monthly(whichever
comesrst)
Checkthepressureatthevalvestem(
Figure59).
Maintaintheairpressureinthereartiresat13psi(90
kPa).Uneventirepressurecancauseunevencut.Check
thetireswhentheyarecoldtogetthemostaccurate
pressurereading.
Note:Thefronttiresaresemi-pneumatictiresanddo
notrequireairpressuremaintenance.
Figure59
CheckingtheWheelHub
SlottedNut
ServiceInterval:Aftertherst100hours—Checkthe
wheelhubslottednut.
Every500hours—Checkthewheel
hubslottednut.
Aftertherst100hours—Checkthe
wheellugnuts.
Every500hours—Checkthewheel
lugnuts.
Theslottednutneedstobetorquedto125ft-lb
(170N-m).
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethecotterpin.
4.Torquetheslottednutto125ft-lb(170N-m)
(
Figure60).
5.Checkthedistancefrombottomofslotinnutto
insideedgeofhole.Twothreadsorlessshouldbe
showing(Figure60).
6.Ifmorethantwothreadsareshowingremovenut
andinstallwasherbetweenhubandnut.
7.Torquetheslottednutto125ft-lb.(170N-m)
(
Figure60).
8.Tightenthenutuntilthenextsetofslotslineupwith
theholeintheshaft(
Figure60).
9.Replacethecotterpin.
Figure60
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(
Figure61).
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(Figure61).
Important:Makesurespringwashersare
installedcorrectlyasshowninFigure61.
5.Installthedustcap(Figure61).
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