Using The Clutch Shim - Toro Z Master Professional 6000 Series Operator's Manual

4. Tighten the locknut until the spring washers are flat,
and then back off a 1/4 turn to properly set the preload
on the bearings (Figure 64).
Important: Make sure that the spring washers are
installed correctly as shown in Figure 64.
5. Install the dust cap (Figure 64).
Figure 64
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.
Figure 65
1. Armature
2. Field shell
3. Rotor
4. Brake-mounting bolt
3. Dust cap
5. Brake spacer
6. Re-gap shim
7. Brake pole
Removing the Clutch Shim
1. Stop the engine, wait for all moving parts to stop,
remove the key, engage the parking brake, and 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.
Note: 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 1/2 to 1 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, hold the tab
and remove the shim.
46
Figure 66
Figure 67