Adjusting The Caster Pivot Bearing; Using The Clutch Shim - Toro 74915 Z Master G3 Operator's Manual

1. 0.1 inch max
4. If more than two threads (0.1 inch) are showing
remove nut and install washer between hub and
nut.
5. Torque the slotted nut to 200 ft-lb (271 N-m).
6. Then tighten nut until the next set of slots line
up with the cross hole in shaft. Do not loosen
nut to align the slot. If required, tighten to the
next set of slots.
7. Install a new cotter pin.
Note: Do Not use anti-seize on wheel hub.
Adjusting the Caster Pivot
Bearing
Service Interval: Every 500 hours/Yearly (whichever
comes first)
1. Disengage the blade control switch (PTO), move the
motion control levers to the neutral locked position
and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the dust cap from caster and tighten lock
nut (Figure 63).
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 63).
Important: Make sure the spring washers are
installed correctly as shown in Figure 63.
5. Install the dust cap (Figure 63).
Figure 62
2. No more than two threads
(0.1 inch max) should be
showing here.
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.
1. Armature
2. Field shell
3. Rotor
4. Brake mounting bolt
Removing the Clutch Shim
1. Stop the engine, wait for all moving parts to stop,
and remove the key. Engage the parking brake.
Allow the machine to cool completely before starting
these instructions.
44
Figure 63
3. Dust Cap
Figure 64
5. Brake spacer
6. Re-gap shim
7. Brake pole