Toro Z Master Professional 6000 74922 Operator's Manual page 47

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.
Figure 67
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.
Figure 68
1. Brake-mounting bolt
B. Using needle-nose pliers, or by hand, hold the tab
and remove the shim.
Note: Do not discard the shim until proper
clutch function has been confirmed.
1. Shim
C. Using a pneumatic line, blow out any debris
from under the brake pole and around the brake
spacers.
D. Torque each bolt (M6 x 1) to 13 N-m (10 ft-lb)
+/-0.7 N-m (0.5 ft-lb).
E. Using a 0.25 mm (0.01 inch) thick feeler gauge,
verify that a gap is present between the rotor and
the armature face on both sides of the brake pole
as shown.
Note: Due to the way the rotor and the armature
faces wear (peaks and valleys) it is sometimes
difficult to measure the gap accurately.
1. Feeler gauge
1. Feeler gauge
47
Figure 69
Figure 70
Figure 71