Toro 74953 - Lubricating the Caster-Wheel Hubs

Figure41
6.Removethedustcapandadjustthecasterpivots.Keep
thedustcapoffuntilgreasingiscomplete.Referto
AdjustingtheCasterPivotBearinginMaintenance.
7.Removethehexplug.Threadagreasettingintothe
hole.
8.Pumpgreaseintothettinguntilitoozesoutaround
thetopbearing.
9.Removethegreasettingfromthehole.Installthehex
pluganddustcap(Figure42).
g027339
Figure42
LubricatingtheCaster-Wheel
Hubs
ServiceInterval:Yearly
1.Stoptheengine,waitforallmovingpartstostop,and
removethekey.Engagetheparkingbrake.
Figure43
1.Sealguard2.Spacernutwithwrench
ats
2.Raisethefrontofthemachineup,andsupportitwith
jackstands(orequivalentsupport)justhighenoughto
allowthefrontwheelstoturnfreely.
3.Removethecasterwheelfromthecasterforks.
4.Removethesealguardsfromthewheelhub.
5.Removeoneofthespacernutsfromtheaxleassembly
inthecasterwheel.Notethatthread-lockingadhesive
hasbeenappliedtolockthespacernutstotheaxle.
Removetheaxle(withtheotherspacernutstill
assembledtoit)fromthewheelassembly.
6.Pryoutseals,andinspectthebearingsforwearor
damageandreplacethemifnecessary.
7.Packthebearingswithageneral-purposegrease.
8.Insertonebearing,onenewsealintothewheel.
Note:Thesealsmustbereplaced.
9.Iftheaxleassemblyhashadbothspacernutsremoved
(orbrokenloose),applyathread-lockingadhesive
toonespacernutandthreaditontotheaxlewith
thewrenchatsfacingoutward.Donotthreadthe
spacernutallthewayontotheendoftheaxle.Leave
approximately3mm(1/8inch)fromtheoutersurface
ofthespacernuttotheendoftheaxleinsidethenut.
10.Inserttheassemblednutandaxleintothewheelonthe
sideofthewheelwiththenewsealandbearing.
11.Withtheopenendofthewheelfacingup,llthearea
insidethewheelaroundtheaxlefullofgeneral-purpose
grease.
12.Insertthesecondbearingandanewsealintothewheel.
13.Applyathread-lockingadhesivetothe2ndspacernut
andthreaditontotheaxlewiththewrenchatsfacing
outward.
14.Torquethenutto8to9N-m(75to80in-lb),loosenit,
thentorqueitto2to3N-m(20to25in-lb).Makesure
thattheaxledoesnotextendbeyondeithernut.
15.Installthesealguardsoverthewheelhubandinsert
thewheelintothecasterfork.Installthecasterbolt
andtightenthenutfully.
16.Removethejackstands.
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