Servicing The Castor Wheels And Bearings - Toro 30412 Groundsmaster 4000-D Operator's Manual

4. Insert a pin punch into the top or bottom of the
mounting tube and drive the bushing out of the tube
(Figure 80). Also drive the other bushing out of the
tube. Clean the inside of the tubes to remove dirt.
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
Service Interval: Every 800 hours
1. Remove the locknut from the bolt holding the castor
wheel assembly between the castor fork (Figure 81)
or the castor pivot arm (Figure 82). Grasp the castor
wheel and slide the bolt out of the fork or pivot arm.
1. Castor wheel
2. Castor fork
Figure 80
2. Bushings
Figure 81
3. Bearing
4. Bearing spacer
1. Castor wheel
2. Castor pivot arm
2. Remove the bearing from the wheel hub and
allow the bearing spacer to fall out (Figure 81 and
Figure 82). Remove the bearing from the opposite
side of the wheel hub.
3. Check the bearings, spacer, and inside of the wheel
hub for wear. Replace any damaged parts.
4. To assemble the castor wheel, push the bearing into
the wheel hub. When installing the bearings, press
on the outer race of the bearing.
5. Slide the bearing spacer into the wheel hub. Push the
other bearing into the open end of the wheel hub to
captivate the bearing spacer inside the wheel hub.
6. Install the castor wheel assembly between the castor
fork and secure it in place with the bolt and locknut.
53
Figure 82
3. Bearing
4. Bearing spacer