Lubricatingthe
Caster-WheelHubs
2500SeriesMachinesOnly
ServiceInterval:Yearly—For2500Series
machines—Lubricatethe
caster-wheelhubs.
1.Shutofftheengine,waitforallmovingpartsto
stop,removethekey,andengagetheparking
brake.
g006115
Figure39
1.Sealguard2.Spacernutwithwrench
ats
2.Removethecasterwheelfromthecasterforks.
3.Removethesealguardsfromthewheelhub.
4.Removeaspacernutfromtheaxleassemblyin
thecasterwheel.
Note:Thread-lockingcompoundhasbeen
appliedtolockthespacernutstotheaxle.
5.Removetheaxle(withtheotherspacernutstill
assembledtoit)fromthewheelassembly.
6.Pryoutsealsandinspectbearingsforwearor
damageandreplaceifnecessary.
7.Packthebearingswithageneral-purpose
grease.
8.Insert1bearingand1newsealintothewheel.
Note:Replacetheseals.
9.Ifbothspacernutshavebeenremoved(or
brokenloose)fromtheaxleassembly,applya
thread-lockingcompoundto1spacernutand
threaditontotheaxlewiththewrenchats
facingoutward.
Note:Donotthreadthespacernutallof
thewayontotheendoftheaxle.Leave
approximately3mm(1/8inch)fromtheouter
surfaceofthespacernuttotheendoftheaxle
insidethenut.
10.Inserttheassemblednutandaxleintothewheel
onthesidewiththenewsealandbearing.
11.Withtheopenendofthewheelfacingup,ll
theareainsidethewheelaroundtheaxlefullof
general-purposegrease.
12.Insertthesecondbearingandnewsealintothe
wheel.
13.Applyathread-lockingcompoundtothesecond
spacernutandthreaditontotheaxlewiththe
wrenchatsfacingoutward.
14.Torquethenutto8to9N∙m(75to80in-lb),
loosenthenut,thentorqueitto2to3N∙m(20
to25in-lb).
Note:Makesurethattheaxledoesnotextend
beyondeithernut.
15.Installthesealguardsoverthewheelhuband
insertwheelintothecasterfork.
16.Installthecasterboltandtightenthenutfully.
Important:Topreventsealandbearingdamage,
checkthebearingadjustmentoften.Spinthe
castertire.Thetireshouldnotspinfreely(more
than1or2revolutions)orhaveanysideplay.If
thewheelspinsfreely,adjustthetorqueonthe
spacernutuntilthereisaslightamountofdrag.
Applyanotherlayerofthread-lockingcompound.
39
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