Toro 74143 - Lubricating the Caster-Wheel Hubs

LubricatingtheCaster-Wheel
Hubs
ServiceInterval:Yearly
1.Stoptheengine,waitforallmovingpartstostop,
removethekey,andengagetheparkingbrake.
Figure36
1.Sealguard2.Spacernutwithwrench
ats
2.Removethecasterwheelfromthecasterforks.
3.Removethesealguardsfromthewheelhub.
4.Removeoneofthespacernutsfromtheaxleassembly
inthecasterwheel.
Note:Thread-lockingadhesivehasbeenappliedto
lockthespacernutstotheaxle.
5.Removetheaxle(withtheotherspacernutstill
assembledtoit)fromthewheelassembly.
6.Pryoutsealsandinspectbearingsforwearordamage
andreplaceifnecessary.
7.Packthebearingswithageneral-purposegrease.
8.Insert1bearingand1newsealintothewheel.
Note:Thesealsmustbereplaced.
9.Iftheaxleassemblyhashadbothspacernutsremoved
(orbrokenloose),applyathread-lockingadhesiveto1
spacernut,andthreaditontotheaxlewiththewrench
atsfacingoutward.
Note:Donotthreadthespacernutalloftheway
ontotheendoftheaxle.Leaveapproximately3mm
(1/8inch)fromtheoutersurfaceofthespacernutto
theendoftheaxleinsidethenut.
10.Inserttheassemblednutandaxleintothewheelonthe
sideofthewheelwiththenewsealandbearing.
11.Withtheopenendofthewheelfacingup,llthearea
insidethewheelaroundtheaxlefullofgeneral-purpose
grease.
12.Insertthesecondbearingandnewsealintothewheel.
13.Applyathread-lockingadhesivetothesecondspacer
nut,andthreaditontotheaxlewiththewrenchats
facingoutward.
14.Torquethenutto8to9N-m(75to80in-lb),loosen,
thentorqueto2to3N-m(20to25in-lb).
Note:Makesureaxledoesnotextendbeyondeither
nut.
15.Installthesealguardsoverthewheelhub,andinsert
wheelintothecasterfork.
16.Installthecasterboltandtightenthenutfully.
Important:Topreventsealandbearingdamage,check
thebearingadjustmentoften.Spinthecastertire.The
tireshouldnotspinfreely(morethan1or2revolutions)
orhaveanysideplay.Ifthewheelspinsfreely,adjustthe
torqueonthespacernutuntilthereisaslightamountof
drag.Applyanotherlayerofthread-lockingadhesive.
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