Servicing Bumper Bushings; Servicing Castor Wheel And Bearing - Toro 30426 Operator's Manual

Servicing Bumper Bushings

After many hours of operation, the bushings pressed into
the top and bottom of the bumper will wear. To check the
bushings, move castor fork fore and aft and from side to
side. If castor spindle is loose in the bushings, bushings are
worn and must be replaced.
1. Start traction unit and raise brush to highest possible
position and turn off engine. Block up brush frame so it
cannot accidentally fall.
2. Remove locking cap, thrust washers and spacers from
top of castor spindle.
3. Pull castor spindle out of bumper. Allow thrust washers
and spacers to remain on bottom of spindle.
4. Insert pin punch into top or bottom of bumper and drive
bushing out of tube (Fig. 23). Also drive other bushing
out of bumper. Clean inside of bumper to remove any
dirt.
2
Figure 23
1. Bumper
5. Apply grease to inside and outside of new bushings.
Using a hammer and flat plate, drive bushings into
bumper.
6. Inspect castor shaft for wear and replace if damaged.
7. Push castor shaft through bushings and bumper. Slide
spacers onto shaft and secure with locking cap.
2
1
2. Bushing
16
Servicing Castor Wheel And
Bearing
The castor wheel rotates on a high–quality roller bearing
and is supported by a spanner bushing. Even after many
hours of use the bearing wear will be minimal. A wobbly
castor wheel usually indicates a worn bearing.
1. Remove locknut from capscrew holding castor wheel
assembly in castor fork. Grasp castor wheel and slide
capscrew out of fork.
1
Figure 24
1. Outer bearing
2. Remove outer bearing from wheel hub and allow inner
bearing to fall out (Fig. 24). Remove outer bearing from
opposite side of wheel hub.
3. Check the bearings and inside of wheel hub for wear.
Replace defective parts as required.
4. To assemble the castor wheel, push outer bearing into
wheel hub. Slide inner bearing into wheel hub. Push
other bearing into open end of wheel hub to captivate
the inner bearing inside the wheel hub.
5. Install castor wheel assembly between castor forks and
secure in place with capscrew and locknut.
2
1
2. Inner bearing