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 61).
Important:
Make sure the spring washers are
installed correctly as shown in Figure 61.
5.
Install the dust cap (Figure 61).
Figure 61
1.
Spring Washers
3.
Dust Cap
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 62
1.
Armature
5.
Brake spacer
2.
Field shell
6.
Re-gap shim
3.
Rotor
7.
Brake pole
4.
Brake mounting bolt
Removing the Clutch Shim
1.
Stop the engine, wait for all moving parts to stop, and
remove the key.
2.
Engage the parking brake and allow the machine to
cool completely before starting these instructions.
3.
Using an air compressor, blow out any debris from
under the brake pole and around the brake spacers.
Figure 63
4.
Check the condition of the wire harness leads,
connectors, and terminals. Clean or repair as necessary.
5.
Verify that 12V is present at the clutch connector when
the PTO switch is engaged.
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 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
match after the shim is removed to ensure proper
brake torque.
Figure 64
1.
Brake mounting bolt
B.
Using needle nose pliers, or by hand, take hold
of the tab, and remove the shim (Do not discard
the shim until proper clutch function has been
confirmed).
42
Summary of Contents for 74959
Page 62: ...Schematics G020788 Electrical Schematic Rev A 62 ...
Page 63: ...Notes 63 ...
