Servicing The Caster Wheel And Bearings - Toro 30071 Operator's Manual

5. Insert a pin punch into the mounting tube and carefully
drive out the bushings (Figure 33).
Figure 33
1. Mounting Tube
6. Clean the inside of the mounting tube.
7. Grease the inside and outside of the new bushings.
8. Use a hammer and flat plate to carefully drive the
bushings into the pivot tubes.
9. Inspect the caster wheel fork for wear and replace if
necessary (Figure 33).
10. Slide the caster wheel fork through the bushings in the
mounting tube.
11. Replace the spacer(s) onto the fork and secure with the
retaining ring (Figure 33).
Important: The inside diameter of the bushings
may collapse slightly when installed. If the caster
wheel fork does not slide into the new bushings,
ream both bushings to an inside diameter of 1.126
inch (29 mm).
12. Grease the fitting on the carrier frame pivot tubes using
No. 2 general purpose lithium base or molybdenum
base grease.
2. Bushing
Servicing the Caster Wheel
and Bearings
The caster wheels rotate on a roller bearing supported by a
spanner bushing. If the bearing is kept well lubricated, wear
will be minimal. Failure to keep the bearing well lubricated
will cause rapid wear. A wobbly caster wheel usually indicates
a worn bearing.
1. Remove the locknut and wheel bolt holding the caster
wheel to the caster fork (Figure 34).
1. Locknut
2. Wheel bolt
3. Bushing
2. Remove 1 bushing, then pull the spanner bushing and
roller bearing out of the wheel hub (Figure 34).
3. Remove the other bushing from the wheel hub and
clean any grease and dirt from the wheel hub (Figure
34).
4. Inspect the roller bearing, bushings, spanner bushing,
and inside of the wheel hub for wear; replace any
defective or worn parts (Figure 34).
5. To assemble, place 1 bushing into the wheel hub.
Grease the roller bearing and spanner bushing and slide
them into the wheel hub.
6. Place the second bushing into the wheel hub (Figure
34).
7. Install the caster wheel into the caster fork and secure
with the wheel bolt and locknut.
8. Tighten the locknut until the spanner bushing bottoms
against the inside of the caster forks (Figure 34).
9. Grease the fitting on the caster wheel.
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Figure 34
4. Spanner bushing
5. Roller bearing