Toro 74990 - Lubricating the Caster-Wheel Hubs

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Figure46
6.Removethedustcapandadjustthecaster
pivots.Keepthedustcapoffuntilgreasingis
complete.RefertoAdjustingtheCasterPivot
BearinginMaintenance.
7.Removethehexplug.Threadagreasetting
intothehole.
8.Pumpgreaseintothettinguntilitoozesout
aroundthetopbearing.
9.Removethegreasettingfromthehole.Install
thehexpluganddustcap(Figure47).
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Figure47
Lubricatingthe
Caster-WheelHubs
ServiceInterval:Yearly
1.Stoptheengine,waitforallmovingpartstostop,
andremovethekey.Engagetheparkingbrake.
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Figure48
1.Sealguard2.Spacernutwithwrench
ats
2.Raisethefrontofthemachineup,andsupportit
withjackstands(orequivalentsupport)justhigh
enoughtoallowthefrontwheelstoturnfreely.
3.Removethecasterwheelfromthecasterforks.
4.Removethesealguardsfromthewheelhub.
5.Removeoneofthespacernutsfromthe
axleassemblyinthecasterwheel.Notethat
thread-lockingadhesivehasbeenappliedto
lockthespacernutstotheaxle.Removethe
axle(withtheotherspacernutstillassembledto
it)fromthewheelassembly.
6.Pryoutseals,andinspectthebearingsforwear
ordamageandreplacethemifnecessary.
7.Packthebearingswithageneral-purpose
grease.
8.Insertonebearing,onenewsealintothewheel.
Note:Thesealsmustbereplaced.
9.Iftheaxleassemblyhashadbothspacer
nutsremoved(orbrokenloose),applya
thread-lockingadhesivetoonespacernutand
threaditontotheaxlewiththewrenchats
facingoutward.Donotthreadthespacernut
allthewayontotheendoftheaxle.Leave
approximately3mm(1/8inch)fromtheouter
surfaceofthespacernuttotheendoftheaxle
insidethenut.
10.Inserttheassemblednutandaxleintothewheel
onthesideofthewheelwiththenewsealand
bearing.
11.Withtheopenendofthewheelfacingup,ll
theareainsidethewheelaroundtheaxlefullof
general-purposegrease.
12.Insertthesecondbearingandanewsealinto
thewheel.
13.Applyathread-lockingadhesivetothe2nd
spacernutandthreaditontotheaxlewiththe
wrenchatsfacingoutward.
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