Toro 74942 - Using the Clutch Shim

4.Tightenthelocknutuntilthespringwashersareatand
thenbackoffa1/4turntoproperlysetthepre-loadon
thebearings(Figure66).
Important:Makesurethespringwashersare
installedcorrectlyasshowninFigure66.
5.Installthedustcap(Figure66).
Figure66
1.Springwashers
3.Dustcap
2.Locknut
UsingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwithclutchesthat
containabrakeshim.Whentheclutchbrakehasworntothe
pointwheretheclutchnolongerengagesconsistently,the
shimcanberemovedtoextendtheclutchlife.
Figure67
1.Armature5.Brakespacer
2.Fieldshell6.Re-gapshim
3.Rotor7.Brakepole
4.Brakemountingbolt
RemovingtheClutchShim
1.Stoptheengine,waitforallmovingpartstostop,and
removethekey.Engagetheparkingbrake.Allow
themachinetocoolcompletelybeforestartingthese
instructions.
2.Usinganaircompressor,blowoutanydebrisfrom
underthebrakepoleandaroundthebrakespacers.
Figure68
3.Checktheconditionofthewireharnessleads,
connectors,andterminals.Cleanorrepairasnecessary.
4.Verifythat12Vispresentattheclutchconnector
whenthePTOswitchisengaged.
5.Measurethegapbetweentherotorandarmature.If
thegapisgreaterthan1mm(0.04inch),proceedwith
thefollowingsteps:
A.Loosenbothbrakemountingboltsone-halfto
onefullturnasshownbelow.
Note:Donotremovethebrakepolefromthe
eldshell/armature.Thebrakepolehasworn
tomatchthearmatureandneedstocontinueto
matchaftertheshimisremovedtoensureproper
braketorque.
Figure69
1.Brakemountingbolt
B.Usingneedlenosepliers,orbyhand,takehold
ofthetabandremovetheshim(Donotdiscard
theshimuntilproperclutchfunctionhasbeen
conrmed).
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