Toro 74978 - Lubricate the Caster Wheel Hubs

Figure41
6.Removethedustcapandadjustthecasterpivots.
Keepthedustcapoffuntilgreasingisdone.Referto
AdjustingtheCasterPivotBearinginMaintenance.
7.Removethehexplug.Threadagreasezerkintothe
hole.
8.Pumpgreaseintothezerkuntilitoozesoutaround
thetopbearing.
9.Removethegreasezerkinthehole.Installthehexplug
anddustcap(
Figure42).
Figure42
LubricatetheCasterWheel
Hubs
ServiceInterval:Yearly
1.Stoptheengine,waitforallmovingpartstostop,and
removethekey.Engagetheparkingbrake.
Figure43
1.Sealguard2.Spacernutwithwrench
ats
2.Raisethefrontofthemachineupandsupportitwith
jackstands.
3.Removethecasterwheelfromthecasterforks.
4.Removethesealguardsfromthewheelhub.
5.Remove1ofthespacernutsfromtheaxleassemblyin
thecasterwheel.Notethatthreadlockingadhesive
hasbeenappliedtolockthespacernutstotheaxle.
Removetheaxle(withtheotherspacernutstill
assembledtoit)fromthewheelassembly.
6.Pryouttheseals,andinspectthebearingsforwearor
damageandreplaceifnecessary.
7.Packthebearingswithageneral-purposegrease.
8.Insert1bearingand1newsealintothewheel.
Note:Thesealsmustbereplaced.
9.Iftheaxleassemblyhashadbothspacernutsremoved
(orbrokenloose),applyathreadlockingadhesiveto1
spacernutandthreaditontotheaxlewiththewrench
atsfacingoutward.Donotthreadthespacernutallof
thewayontotheendoftheaxle.Leaveapproximately
3mm(1/8inch)fromtheoutersurfaceofthespacer
nuttotheendoftheaxleinsidethenut.
10.Inserttheassemblednutandaxleintothewheelonthe
sideofthewheelwiththenewsealandbearing.
11.Withtheopenendofthewheelfacingup,llthearea
insidethewheelaroundtheaxlefullofgeneral-purpose
grease.
12.Insertthesecondbearingandnewsealintothewheel.
13.Applyathreadlockingadhesivetothesecondspacer
nutandthreaditontotheaxlewiththewrenchats
facingoutward.
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