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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 52).
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 52).
Important: Make sure the spring washers are
installed correctly as shown in Figure 52.
5. Install the dust cap (Figure 52).
1. Spring Washers
2. Lock Nut
Adjusting the Electric Clutch
Service Interval: Every 500 hours—Check the electric
clutch.
The clutch is adjustable to ensure proper engagement and
proper braking.
1. Insert a 0.015–0.021 inch (0.381–0.533 mm) feeler
gauge through one inspection slot in the side of the
assembly. Make sure it is between the armature and
the rotor friction surfaces.
The gap needs to be at least .015 inches (0.381 mm)
and not more than .021 inches (0.533 mm).
Figure 52
3. Dust Cap
2. If adjustment is needed, then set at .015 inches (0.381
mm) for each of the three adjustment slot positions.
Tighten the lock nuts until there is slight binding on
the feeler gauge but it can be moved easily within the
air gap (Figure 53).
3. Repeat this for the remaining slots.
4. Check each slot again and make slight adjustments until
the feeler gauge between the rotor and armature with
very slight contact between them.
1. Adjusting nut
2. Slot
39
Figure 53
3. Feeler gauge
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