Servicing The Castor Arm Bushings; Servicing The Castor Wheels And Bearings - Toro 30410 Operator's Manual

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
(Fig. 85). Also drive the other bushing out of the tube.
Clean the inside of the tubes to remove dirt.
1
Figure 85
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 capscrew holding the
castor wheel assembly between the castor fork (Fig. 86)
or the castor pivot arm (Fig. 87). Grasp the castor wheel
and slide the capscrew out of the fork or pivot arm.
2
2. Bushings
52
1
3
4
Figure 86
1. Castor wheel
2. Castor fork
2
3
4
1
Figure 87
1. Castor wheel
2. Castor pivot arm
2. Remove the bearing from the wheel hub and allow the
bearing spacer to fall out (Fig. 86 and 87). 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 capscrew and
locknut.
2
3. Bearing (2)
4. Bearing spacer
3
3. Bearing (2)
4. Bearing spacer