Using The Clutch Shim - Toro 74960 Operator's Manual

Figure 67
1. Spring washers
2. Locknut

Using the Clutch Shim

Some later model year units have been built with
clutches that contain a brake shim. When the clutch
brake has worn to the point where the clutch no longer
engages consistently, you can remove the shim can
be removed to extend the clutch life.
Figure 68
1. Armature
2. Field shell
3. Rotor
4. Brake-mounting bolt
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3. Dust cap
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5. Brake spacer
6. Re-gap shim
7. Brake pole
Removing the Clutch Shim
1. Shut off the engine, wait for all moving parts to
stop, remove the key, engage the parking brake,
and allow the machine to cool completely.
2. Using an air compressor, blow out any debris
from under the brake pole and around the brake
spacers (Figure
3. Check the condition of the wire-harness leads,
connectors, and terminals.
Note:
Clean or repair as necessary.
4. Verify that 12 V is present at the clutch connector
when you engage the blade-control switch
(PTO).
5. Measure the gap between the rotor and
armature. If the gap is greater than 1 mm (0.04
inch), do the following steps:
A. Loosen both brake-mounting bolts 1/2 to 1
full turn as shown in
Note:
Do not remove the brake pole from
the field shell/armature. The brake pole
has worn to match the armature and must
continue to match after you remove the
shim to ensure proper brake torque.
1. Brake-mounting bolt
52
69).
Figure 69
Figure 70.
Figure 70
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