Servicing The Castor Arm; Bushings; Servicing The Castor Wheels And Bearings - Toro 30411 Groundsmaster 4100-D Operator's Manual

Figure 83
1. Castor wheel
2. Tensioning cap
3. Spacers

Servicing the Castor Arm

Bushings

The castor arms have bushings pressed into the
top and bottom of the tube and after many hours
of operation, the bushings will wear. To check the
bushings, move the castor fork back and forth and
from side to side. If the castor spindle is loose
inside the bushings, the bushings are worn and
must be replaced.
1. Raise the cutting unit so that the wheels are off
of the floor. Block the cutting unit so that it
cannot accidentally fall.
2. Remove the tensioning cap, spacer(s), and
thrust washer from the top of the castor
spindle.
3. Pull the castor spindle out of the mounting
tube. Allow the thrust washer and spacer(s) to
remain on the bottom of the spindle.
4. Insert a pin punch into the top or bottom of
the mounting tube and drive the bushing out
of the tube (Figure 84). Also drive the other
bushing out of the tube. Clean the inside of
the tubes to remove dirt.
4. Shims
5. Axle mounting holes
Figure 84
1. Castor arm tube
5. Apply grease to the inside and outside of the
new bushings. Using a hammer and flat plate,
drive the bushings into the mounting tube.
6. Inspect the castor spindle for wear and replace
it if it is damaged.
7. Push the castor spindle through the bushings
and mounting tube. Slide the thrust washer
and spacer(s) onto the spindle. Install the
tensioning cap on the castor spindle to retain
all parts in place.
Servicing the Castor Wheels
and Bearings
1. Remove the locknut from the bolt holding the
castor wheel assembly between the castor fork
(Figure 85) or the castor pivot arm (Figure 86).
Grasp the castor wheel and slide the bolt out
of the fork or pivot arm.
Figure 85
1. Castor wheel
2. Castor fork
53
2. Bushings
3. Bearing
4. Bearing spacer