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Front Castor Fork Bushing Service
The castor forks have bushings pressed into the top and
bottom of the casting and after many hours of operation,
the bushings will wear. To check the bushings, move
castor fork back and forth and from side to side. If castor
spindle is loose around the bushings, bushings are worn
and must be replaced.
1. Start tractor and raise deck to highest possible posi-
tion and turn off engine.
2. Remove front snapper pins from castor arms and
slide castor wheel assembly out of castor arm tube.
3. Remove locknut from capscrew holding castor
wheel assembly between castor fork. Grasp castor
wheel and slide capscrew out of fork.
4. Remove retaining ring, washer and wave washer
securing castor shaft to castor fork. Remove shaft from
fork.
5. Insert pin punch into top or bottom of castor fork and
drive bushing out of fork. Repeat for other bushing.
Clean inside of forks to remove dirt.
6. Apply grease to inside and outside of new bushings.
Using a hammer and flat plate, drive bushings into fork.
7. Inspect castor shaft and fork for wear and replace if
damaged.
8. Push castor shaft through bushings and fork and se-
cure with wave washer, washer and retaining ring.
9. Insert snapper pin into castor arm and through
groove in castor shaft at desired height–of–cut.
1
2
4
3
6
6
5
Figure 21
1. Front Castor Fork
4. Wave Washer
2. Retaining Ring
5. Castor Shaft
3. Washer
6. Bushings
84 inch Cutting Units
Page 9 – 12
Groundsmaster 3000/3000–D