Servicing The Castor Arm Bushings - Toro 31598 Operator's Manual

Figure 95
1. Height-of-cut chain
2. U-bolt
Adjusting the Side Cutting Units
1. Remove the tensioning cap from the castor spindle
shaft and slide the spindle out of the castor arm
96). Reposition the shims, as required, to raise or lower
the castor wheel until the cutting unit has the correct
pitch.
2. Install the tensioning cap.
Figure 96
1. Tensioning cap
2. Spacers
3. Shims
3. Nut (2)
(Figure
4. Top axle mounting hole
5. Castor wheel
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.
Note: Record the position of the washers and spacers
before removal so the deck pitch does not have to be
readjusted.
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 97). 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.
60
Figure 97
2. Bushings