Toro GrandStand 74550 - Checking the Tire Pressure; Adjusting the Caster Pivot Bearing; Servicing the Caster Wheel and Bearings

CheckingtheTirePressure
ServiceInterval:Every50hours/Monthly(whichever
comesrst)
Maintaintheairpressureinthereartiresat12-14psi
(83-97kPa).Uneventirepressurecancauseanuneven
cut.
Note:Thefronttiresaresemi-pneumatictiresanddo
notrequireairpressuremaintenance.
Figure57
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hours/Yearly(whichever
comesrst)
1.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockedposition
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenlock
nut(
Figure58).
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(
Figure58).
Important:Makesurespringwashersare
installedcorrectlyasshownin
Figure58.
5.Installthedustcap(Figure58).
Figure58
1.SpringWashers3.DustCap
2.LockNut
ServicingtheCasterWheel
andBearings
Thecasterwheelsrotateonarollerbearingsupportedby
aspannerbushing.Ifthebearingiskeptwelllubricated,
wearwillbeminimal.Failuretokeepthebearingwell
lubricatedwillcauserapidwear.Awobblycasterwheel
usuallyindicatesawornbearing.
1.Removethelocknutandwheelboltholdingthe
casterwheeltothecasterfork(
Figure59).
Figure59
1.Locknut
4.SpannerBushing
2.WheelBolt5.RollerBearing
3.Bushing
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