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Removing the Clutch Shim
Service Interval: Every 100 hours—Check the clutch.
When the clutch brake has worn to the point where
the clutch no longer engages consistently, you can
remove the shim to extend the clutch life
Figure 55
1. Armature
2. Field shell
3. Rotor
4. Brake-mounting bolt
1.
Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Using an air compressor, blow out any debris
under the brake pole and around the brake
spacers.
Figure 56
4.
Check the condition of the wire-harness leads,
connectors, and terminals. Clean or repair them
as necessary.
5.
Verify that 12 V is present at the clutch connector
when the you engage the PTO switch.
(Figure
55).
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5. Brake spacer
6. Shim.
7. Brake pole
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6.
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 you remove the
shim to ensure the proper brake torque.
1. Brake-mounting bolt
B.
Using needle-nose pliers, or by hand,
remove the shim.
Note:
Do not discard the shim until you
confirm that the clutch functions properly.
1. Shim
C.
Using a pneumatic line, blow out any debris
under the brake pole and around the brake
spacers.
D.
Torque each bolt (M6 x 1) to 12.3 to 13.7
N∙m (9.5 to 10.5 ft-lb).
E.
Using a 0.010 inch thick-feeler gauge, verify
that a gap is present between the rotor and
armature face on both sides of the brake
pole as shown in
Note:
Due to the way the rotor and
armature faces wear (peaks and valleys), it
41
Figure
57.
Figure 57
Figure 58
Figure 59
and
Figure
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60.
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