Toro 72904 - Greasing the Caster Pivots; Greasing the Caster-Wheel Hubs

GreasingtheCasterPivots
ServiceInterval:Every400hours/Yearly(whichever
comesrst)(moreoftenindirtyor
dustyconditions).
Yearly—Repackthecaster-wheelbearings
(moreoftenindirtyordustyconditions).
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch,andengagetheparking
brake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Removethedustcapandadjustthecaster
pivotsandkeepthedustcapoffuntilgreasingis
done;refertoGreasingtheMowerDeck(page
43).
4.Removethehexplug.
5.Threadagreasettingintothehole.
6.Pumpgreaseintothettinguntilitoozesout
aroundthetopbearing.
7.Removethegreasettingfromthehole.Install
thehexplugandcap.
GreasingtheCaster-Wheel
Hubs
ServiceInterval:Yearly
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch,andengagetheparking
brake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Raisethemowerforaccess.
4.Removethecasterwheelfromthecasterforks.
5.Removethesealguardsfromthewheelhub.
g006115
Figure51
1.Sealguard2.Spacernutwithwrench
ats
6.Removeaspacernutfromtheaxleassemblyin
thecasterwheel.
Note:Thread-lockingcompoundhasbeen
appliedtolockthespacernutstotheaxle.
7.Removetheaxle(withtheotherspacernutstill
assembledtoit)fromthewheelassembly.
8.Pryoutsealsandinspectbearingsforwearor
damageandreplaceifnecessary.
9.Packthebearingswithageneral-purpose
grease.
10.Insert1bearingand1newsealintothewheel.
11.Iftheaxleassemblyismissingbothspacernuts,
applyathread-lockingcompoundto1spacer
nutandthreaditontotheaxlewiththewrench
atsfacingoutward.
Note:Donotthreadthespacernutallof
thewayontotheendoftheaxle.Leave
approximately3mm(1/8inch)fromtheouter
surfaceofthespacernuttotheendoftheaxle
insidethenut.
12.Inserttheassemblednutandaxleintothewheel
onthesidewiththenewsealandbearing.
13.Withtheopenendofthewheelfacingup,ll
theareainsidethewheelaroundtheaxlefullof
general-purposegrease.
14.Insertthesecondbearingandnewsealintothe
wheel.
15.Applyathread-lockingcompoundtothesecond
spacernut,andthreaditontotheaxlewiththe
wrenchatsfacingoutward.
16.Torquethenutto8to9N∙m(75to80in-lb),
loosenthenut,thentorqueitto2to3N∙m(20
to25in-lb).
Note:Makesurethattheaxledoesnotextend
beyondeithernut.
17.Installthesealguardsoverthewheelhub,and
insertthewheelintothecasterfork.
18.Installthecasterboltandtightenthenutfully.
Important:Topreventsealandbearingdamage,
checkthebearingadjustmentoften.Spinthe
castertire.Thetireshouldnotspinfreely(more
than1or2revolutions)orhaveanysideplay.If
thewheelspinsfreely,adjustthetorqueonthe
spacernutuntilthereisaslightamountofdrag.
Applyanotherlayerofthread-lockingcompound.
45