Toro Z Master 74958 - Clutch Shim Adjustment; Clutch Engagement Shim Procedure

UsingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwith
clutchesthatcontainabrakeshim.Whentheclutch
brakehasworntothepointwheretheclutchnolonger
engagesconsistently,youcanremovetheshimto
extendtheclutchlife.
g010869
Figure64
1.Armature5.Brakespacer
2.Fieldshell6.Regapshim
3.Rotor7.Brakepole
4.Brake-mountingbolt
RemovingtheClutchShim
1.Shutofftheengine,waitforallmovingpartsto
stop,andremovethekey.
2.Engagetheparkingbrakeandwaitformachine
tocoolcompletely.
3.Usinganaircompressor,blowoutanydebris
underthebrakepoleandaroundthebrake
spacers.
g010868
Figure65
4.Checktheconditionofthewire-harnessleads,
connectors,andterminals.Cleanorrepairthem
asnecessary.
5.Verifythat12Vispresentattheclutchconnector
whentheyouengagetheblade-controlswitch
(PTO).
6.Measurethegapbetweentherotorand
armature.Ifthegapisgreaterthan1mm(0.04
inch),proceedwiththefollowingsteps:
A.Loosenbothbrakemountingbolts1/2to1
fullturnasshowninFigure66.
Note:Donotremovethebrakepolefrom
theeldshell/armature.Thebrakepole
hasworntomatchthearmatureandneeds
tocontinuetomatchafteryouremovethe
shimtoensuretheproperbraketorque.
g010870
Figure66
1.Brake-mountingbolt
B.Usingneedle-nosepliers,orbyhand,
removetheshim.
Note:Donotdiscardtheshimuntilyou
conrmthattheclutchfunctionsproperly.
g010871
Figure67
1.Shim
C.Usingapneumaticline,blowoutanydebris
underthebrakepoleandaroundthebrake
spacers.
D.Torqueeachbolt(M6x1)to12.3to13.7
N∙m(9.5to10.5ft-lb).
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