Toro 74953 - Page 45

RemovingtheClutchShim
1.Stoptheengine,waitforallmovingpartstostop,and
removethekey.Engagetheparkingbrake.Allow
themachinetocoolcompletelybeforestartingthese
instructions.
2.Usinganaircompressor,blowoutanydebrisfrom
underthebrakepoleandaroundthebrakespacers.
Figure64
3.Checktheconditionofthewireharnessleads,
connectors,andterminals.Cleanorrepairasnecessary.
4.Verifythat12Vispresentattheclutchconnectorwhen
thePTOswitchisengaged.
5.Measurethegapbetweentherotorandthearmature.
Ifthegapisgreaterthan1mm(0.04inch),proceed
withthefollowingsteps:
A.Loosenbothbrakemountingboltsone-halfto
onefullturnasshownbelow.
Note:Donotremovethebrakepolefromthe
eldshell/armature.Thebrakepolehasworn
tomatchthearmatureandneedstocontinueto
matchaftertheshimisremovedtoensureproper
braketorque.
Figure65
1.Brakemountingbolt
B.Usingneedle-nosepliers,orbyhand,takeholdof
thetabandremovetheshim.
Note:Donotdiscardtheshimuntilproper
clutchfunctionhasbeenconrmed.
Figure66
1.Shim
C.Usingapneumaticline,blowoutanydebris
fromunderthebrakepoleandaroundthebrake
spacers.
D.Re-torqueeachbolt(M6x1)to13N-m(10ft-lb)
+/-0.7N-m(0.5ft-lb).
E.Usinga0.010inchthickfeelergauge,verifythat
agapispresentbetweentherotorandarmature
faceonbothsidesofthebrakepoleasshown.
(Duetothewaytherotorandarmaturefaces
wear(peaksandvalleys)itissometimesdifcult
tomeasurethetruegap.)
Figure67
1.Feelergauge
Figure68
1.Feelergauge
•Ifthegapislessthan0.010inch,thenreinstall
theshimandreferenceTroubleshooting(page
63).
•Ifthegapissufcient,proceedtothesafety
checkinstepF.
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