Toro 74947 Operator's Manual page 51

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 before
starting these instructions.
2. Using an air compressor, blow out any debris
from under the brake pole and around the brake
spacers (Figure 68).
Figure 68
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 blade-control switch (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 in
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 69
1. Brake-mounting bolt
g010868
Figure 69.
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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 in
71 and Figure
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
51
(Figure
Figure 70
72.
Figure 71
70).
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Figure
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