Toro 72980 - Adjusting the Caster-Pivot Bearing; Removing the Clutch Shim

AdjustingtheCaster-Pivot
Bearing
ServiceInterval:Every500hours/Yearly(whichever
comesrst)
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch(PTO),andengagethe
parkingbrake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Removethedustcapfromcasterandtighten
thelocknut(Figure62).
4.Tightenthelocknutuntilthespringwashersare
at,andthenbackoffa1/4turntoproperlyset
thepreloadonthebearings(Figure62).
Important:Makesurethatthespring
washersareinstalledcorrectlyasshownin
Figure62.
5.Installthedustcap(Figure62).
g001297
Figure62
1.Springwashers
3.Dustcap
2.Locknut
RemovingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwith
clutchesthatcontainabrakeshim.Whentheclutch
brakehasworntothepointwheretheclutchnolonger
engagesconsistently,youcanremovetheshimto
extendtheclutchlife.
g010869
Figure63
1.Armature5.Brakespacer
2.Fieldshell6.Re-gapshim
3.Rotor7.Brakepole
4.Brake-mountingbolt
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch(PTO),andengagethe
parkingbrake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Usinganaircompressor,blowoutanydebris
fromunderthebrakepoleandaroundthebrake
spacers(Figure64).
g010868
Figure64
4.Checktheconditionofthewire-harnessleads,
connectors,andterminals.
Note:Cleanorrepairasnecessary.
50