Replacing The Castor Wheel Fork Bushings; Retaining Ring - Toro 30138 Operator's Manual

Maintenance
Replacing the Castor Wheel
Fork Bushings
The castor wheel forks are mounted in bushings
pressed into the top and bottom of the carrier frame
mounting tubes. To check the bushings, move the
castor forks back and forth and side-to-side. If a
castor fork is loose, the bushings are worn and must
be replaced.
1. Raise the cutting unit so the castor wheels are off
the floor, then block up the front of the mower
with jack stands.
2. Remove the retaining ring, thrust washer(s) and
spacer from the top of the castor wheel fork (Fig.
29).
3. Pull the castor wheel fork out of the mounting
tube, leaving the thrust washer(s) on the bottom
of the fork. Remember the location of the thrust
washers and spacer on each fork to ensure
correct installation, and to maintain a level deck.
1
3
4
5
Figure 29

1. Retaining Ring

2. Thrust Washers (locate as
required)
3. Spacer
18
2
2
4. Carrier Frame Mounting
Tube
5. Castor Wheel Fork
4. Insert a pin punch into the mounting tube and
carefully drive out the bushings (Fig. 30). Clean
the inside of the mounting tube.
5. Grease the inside and outside of the new
bushings. Use a hammer and flat plate to
carefully drive the bushings into the mounting
tube.
6. Inspect the castor wheel fork for wear and
replace if necessary (Fig. 29).
7. Slide the castor wheel fork through the bushings
in the mounting tube. Replace the spacer and
thrust washer(s) onto the fork and secure with
the retaining ring (Fig 29).
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 28.6mm (1.126 in.).
8. Grease the fitting on the carrier frame mounting
tube using No. 2 general purpose lithium base or
molybdenum base grease.
2
1
2
Figure 30
1. Carrier Frame Mounting
Tube
2. Bushing