Toro 74523 - Servicing the Caster Wheels and Bearings; Using the Clutch Shim

ServicingtheCasterWheels
andBearings
Thecasterwheelsrotateonarollerbearingsupportedbya
spannerbushing.Ifthebearingiskeptwelllubricated,wear
willbeminimal.Failuretokeepthebearingwelllubricated
causesrapidwear.Awobblycasterwheelusuallyindicatesa
wornbearing.
1.Removethelocknutandwheelboltholdingthecaster
wheeltothecasterfork(Figure57).
Figure57
1.Locknut4.Rollerbearing
2.Bushing
5.Casterwheel
3.Spannerbushing
6.Wheelbolt
2.Remove1bushing,thenpullthespannerbushingand
rollerbearingoutofthewheelhub(Figure57).
3.Removetheotherbushingfromthewheelhuband
cleananygreaseanddirtfromthewheelhub(Figure
57).
4.Inspecttherollerbearing,bushings,spannerbushing
andtheinsideofthewheelhubforwear.
Note:Replaceanydamagedorwornparts(Figure57).
5.Place1bushingintothewheelhub(Figure57).
6.Greasetherollerbearingandspannerbushing,and
slidethemintothewheelhub(Figure57).
7.Placethesecondbushingintothewheelhub(Figure
57).
8.Installthecasterwheelintothecasterforkandsecure
itwiththewheelboltandlocknut(Figure57).
9.Tightenthelocknutuntilthespannerbushingbottoms
againsttheinsideofthecasterforks(Figure57).
10.Greasethettingonthecasterwheel.
UsingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwithclutchesthat
containabrakeshim.Whentheclutchbrakehasworntothe
pointwheretheclutchnolongerengagesconsistently,you
canremovetheshimtoextendtheclutchlife.
Figure58
1.Armature5.Brakespacer
2.Fieldshell6.Regaptheshim.
3.Rotor7.Brakepole
4.Brake-mountingbolt
RemovingtheClutchShim
1.Shutofftheengine,waitforallmovingpartstostop,
andremovethekey.
2.Engagetheparkingbrakeandwaitformachinetocool
completely.
3.Usinganaircompressor,blowoutanydebrisunderthe
brakepoleandaroundthebrakespacers.
Figure59
4.Checktheconditionofthewire-harnessleads,
connectors,andterminals.Cleanorrepairthemas
necessary.
5.Verifythat12Vispresentattheclutchconnector
whentheyouengagetheblade-controlswitch(PTO).
6.Measurethegapbetweentherotorandarmature.If
thegapisgreaterthan1mm(0.04inch),proceedwith
thefollowingsteps:
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