Toro 30316 Operator's Manual page 33

2
1
2
Figure 50
1. Carrier frame mounting
tube
6. Clean the inside of the mounting tube.
7. Grease the inside and outside of the new bushings.
8. Using a hammer and flat plate, carefully drive the
bushings into the mounting tube.
9. Inspect the castor wheel forks for wear and replace
them if necessary (Fig. 51).
10. Slide the castor wheel fork through the bushings in the
mounting tube.
11. Install the thrust washer(s) onto the fork and secure it
with the retaining ring (Fig 49).
Important The inside diameter of the bushings may
collapse slightly when installed. If the castor wheel fork
does not slide into the new bushings, ream both bushings
to an inside diameter of 1.126 inch (28.6 mm).
12. Grease the fitting on the carrier frame mounting tube
using No. 2 general purpose lithium base or
molybdenum base grease.
m–1076
2. Bushing
33
Servicing the Castor Wheels
and Bearings
The castor wheels rotate on a roller bearing supported by a
spanner bushing. If you keep the bearing well lubricated,
wear will be minimal. Failure to keep the bearing well
lubricated will cause rapid wear. A wobbly castor wheel
usually indicates a worn bearing.
1. Disengage the blade control (PTO), set the parking
brake, stop the engine, remove the key, and disconnect
the spark plug wire from the spark plug.
2. Remove the locknut and wheel bolt holding the castor
wheel to the castor fork (Fig. 51).
5
6
1
2
Figure 51
1. Wheel bolt
2. Castor fork
3. Locknut
4. Bushing
3. Remove the wheel spacers and bushings, then pull the
spanner bushing and roller bearing out of the wheel
hub (Fig. 51).
4. Clean any grease and dirt from the wheel hub
(Fig. 51).
5. Inspect the roller bearing, bushings, spanner bushing,
and inside of the wheel hub for wear. Replace any
damaged or worn parts (Fig. 51).
6. Place a bushing into the wheel hub (Fig. 51).
7. Grease the roller bearing and spanner bushing and
slide them into the wheel hub (Fig. 51).
7
4
8
6
4
3
m-2621
5. Spanner bushing
6. Wheel spacer
7. Roller bearing
8. Grease fitting