Toro 74997 - Page 50

RemovingtheClutchShim
1.Shutofftheengine,waitforallmovingpartstostop,
andremovethekey.
2.Engagetheparkingbrakeandwaitformachinetocool
completely.
3.Usinganaircompressor,blowoutanydebrisunderthe
brakepoleandaroundthebrakespacers.
Figure70
4.Checktheconditionofthewire-harnessleads,
connectors,andterminals.Cleanorrepairthemas
necessary.
5.Verifythat12Vispresentattheclutchconnector
whentheyouengagetheblade-controlswitch(PTO).
6.Measurethegapbetweentherotorandarmature.If
thegapisgreaterthan1mm(0.04inch),proceedwith
thefollowingsteps:
A.Loosenbothbrakemountingbolts1/2to1full
turnasshowninFigure71.
Note:Donotremovethebrakepolefromthe
eldshell/armature.Thebrakepolehasworn
tomatchthearmatureandneedstocontinueto
matchafteryouremovetheshimtoensurethe
properbraketorque.
Figure71
1.Brake-mountingbolt
B.Usingneedle-nosepliers,orbyhand,removethe
shim.
Note:Donotdiscardtheshimuntilyouconrm
thattheclutchfunctionsproperly.
Figure72
1.Shim
C.Usingapneumaticline,blowoutanydebrisunder
thebrakepoleandaroundthebrakespacers.
D.Torqueeachbolt(M6x1)to12.3to13.7N∙m
(9.5to10.5ft-lb).
E.Usinga0.010inchthick-feelergauge,verifythat
agapispresentbetweentherotorandarmature
faceonbothsidesofthebrakepoleasshownin
Figure73andFigure74.
Note:Duetothewaytherotorandarmature
faceswear(peaksandvalleys),itissometimes
difculttomeasurethetruegap.
Figure73
1.Feelergauge
Figure74
1.Feelergauge
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