Toro 74950 - Using the Clutch Shim; Removing the Clutch Shim

RemovingtheClutchShim
1.Shutofftheengine,waitforallmovingpartstostop,
andremovethekey.Engagetheparkingbrake.Allow
themachinetocoolcompletelybeforestartingthese
instructions.
2.Usinganaircompressor,blowoutanydebrisfrom
underthebrakepoleandaroundthebrakespacers.
Figure66
3.Checktheconditionofthewireharnessleads,
connectors,andterminals.
Note:Cleanorrepairasnecessary.
4.Verifythat12Vispresentattheclutchconnector
whenthePTOswitchisengaged.
5.Measurethegapbetweentherotorandthearmature.
Ifthegapisgreaterthan1mm(0.04inch),proceed
withthefollowingsteps:
A.Loosenbothbrake-mountingbolts1/2to1full
turnasshownbelow.
Note:Donotremovethebrakepolefromthe
eldshell/armature.Thebrakepolehasworn
tomatchthearmatureandneedstocontinueto
matchaftertheshimisremovedtoensureproper
braketorque.
Figure67
1.Brake-mountingbolt
B.Usingneedle-nosepliers,orbyhand,holdthetab
andremovetheshim.
Note:Donotdiscardtheshimuntilproper
clutchfunctionhasbeenconrmed.
Figure68
1.Shim
C.Usingapneumaticline,blowoutanydebris
fromunderthebrakepoleandaroundthebrake
spacers.
D.Torqueeachbolt(M6x1)to13N∙m(10ft-lb)
+/-0.7N∙m(0.5ft-lb).
E.Usinga0.25mm(0.01inch)thickfeelergauge,
verifythatagapispresentbetweentherotorand
thearmaturefaceonbothsidesofthebrakepole
asshown.
Note:Duetothewaytherotorandthearmature
faceswear(peaksandvalleys)itissometimes
difculttomeasurethegapaccurately.
Figure69
1.Feelergauge
Figure70
1.Feelergauge
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