Toro 74990 - Page 52

RemovingtheClutchShim
1.Stoptheengine,waitforallmovingpartsto
stop,andremovethekey.Engagetheparking
brake.Allowthemachinetocoolcompletely
beforestartingtheseinstructions.
2.Usinganaircompressor,blowoutanydebris
fromunderthebrakepoleandaroundthebrake
spacers.
g010868
Figure69
3.Checktheconditionofthewireharnessleads,
connectors,andterminals.Cleanorrepairas
necessary.
4.Verifythat12Vispresentattheclutchconnector
whenthePTOswitchisengaged.
5.Measurethegapbetweentherotorandthe
armature.Ifthegapisgreaterthan1mm(0.04
inch),proceedwiththefollowingsteps:
A.Loosenbothbrakemountingboltsone-half
toonefullturnasshownbelow.
Note:Donotremovethebrakepolefrom
theeldshell/armature.Thebrakepolehas
worntomatchthearmatureandneedsto
continuetomatchaftertheshimisremoved
toensureproperbraketorque.
g010870
Figure70
1.Brakemountingbolt
B.Usingneedle-nosepliers,orbyhand,take
holdofthetabandremovetheshim.
Note:Donotdiscardtheshimuntilproper
clutchfunctionhasbeenconrmed.
g010871
Figure71
1.Shim
C.Usingapneumaticline,blowoutanydebris
fromunderthebrakepoleandaroundthe
brakespacers.
D.Re-torqueeachbolt(M6x1)to13N-m(10
ft-lb)+/-0.7N-m(0.5ft-lb).
E.Usinga0.010inchthickfeelergauge,verify
thatagapispresentbetweentherotor
andarmaturefaceonbothsidesofthe
brakepoleasshown.(Duetothewaythe
rotorandarmaturefaceswear(peaksand
valleys)itissometimesdifculttomeasure
thetruegap.)
g010872
Figure72
1.Feelergauge
g010873
Figure73
1.Feelergauge
52