Using The Clutch Shim - Toro 74933 Operator's Manual

1. Spring Washers
2. Lock Nut

Using the Clutch Shim

When the clutch brake has worn to the point where the clutch
no longer engages consistently, the shim can be removed to
extend the clutch life.
1. Armature
2. Field shell
3. Rotor
4. Brake mounting bolt
Removing the Clutch Shim
1. Stop the engine, wait for all moving parts to stop, and
remove the key.
2. Engage the parking brake and allow the machine to
cool down completely.
3. Using an air compressor, blow out any debris from
under the brake pole and around the brake spacers.
Figure 62
3. Dust Cap
Figure 63
5. Brake spacer
6. Re-gap shim
7. Brake pole
4. Check the condition of the wire harness leads,
connectors, and terminals. Clean or repair as necessary.
5. Verify that 12V is present at the clutch connector when
the PTO switch is engaged.
6. Measure the gap between the rotor and armature. If
the gap is greater than 1 mm (.04 inch), proceed with
the following steps:
A. Loosen both brake mounting bolts one-half to
one full turn as shown below.
Note: Do not remove the brake pole from the
field shell/armature. The brake pole has worn
to match the armature and needs to continue to
match after the shim is removed to ensure proper
brake torque.
1. Brake mounting bolt
B. Using needle nose pliers, or by hand, take hold
of the tab and remove the shim (Do not discard
the shim until proper clutch function has been
confirmed).
45
Figure 64
Figure 65