Using The Clutch Shim - Toro 74944 Operator's Manual

2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Remove the dust cap from caster and tighten lock nut
(Figure 65).
4. Tighten the locknut until the spring washers are flat and
then back off a 1/4 turn to properly set the pre-load on
the bearings (Figure 65).
Important: Make sure the spring washers are
installed correctly as shown in Figure 65.
5. Install the dust cap (Figure 65).
Figure 65
1. Spring Washers
2. Lock Nut

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, the
shim can be removed to extend the clutch life.
3. Dust Cap
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. Engage the parking brake. Allow
the machine to cool completely before starting these
instructions.
2. Using an air compressor, blow out any debris from
under the brake pole and around the brake spacers.
3. Check the condition of the wire harness leads,
connectors, and terminals. Clean or repair as necessary.
4. Verify that 12V is present at the clutch connector when
the PTO switch is engaged.
5. Measure the gap between the rotor and armature. If
the gap is greater than 1 mm (0.04 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
45
Figure 66
5. Brake spacer
6. Re-gap shim
7. Brake pole
Figure 67