Servicing The Bushings In The Castor Arms; Servicing The Castor Wheels And Bearings - Toro 30645 Operator's Manual

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1. Lift arm
2. Castor-arm bracket
3. Height-of-cut rod
4. Lift-arm pads
5. Thrust washers
6. Secure the lift arm to the castor arm with 2 thrust
washers, a clevis pin, and a hair-pin cotter.
7. Position the thrust washers between the lift arm and
the castor-arm bracket
8. Insert the end of the hairpin cotter into the slot in the
castor-arm bracket to retain the pin.
9. Repeat the procedure on the other lift arm.
10. Start the traction unit and raise the cutting unit.
11. Working on the right side, push down on the rear
of the cutting unit and insert the height-of-cut rods
through the lift-arm pads.
12. Repeat step 11 on the left side, taking care not to allow
the right side height-of-cut rod to fall out.
13. Install the height-of-cut collars onto the height-of-cut
rods and secure with the clevis pins and hair-pin cotters
(Figure 23).
Note: The head of the clevis pin must be positioned
toward the front of the deck.
Servicing the Bushings in the
Castor Arms
The castor arms have bushings pressed into the top and
bottom of the tube and after many hours of operation, the
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Figure 23
6. Pin
7. Hairpin cotter
8. Height-of-cut collar
9. Clevis pin
10. Hairpin cotter
(Figure 23).
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;
replace them as follows:
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1. Raise the cutting unit so that the wheels are off of
the floor. Latch 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.
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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
5. Drive the other bushing out of the tube. Clean the
inside of the tubes to remove dirt.
1. Castor-arm tube
6. Apply grease to the inside and outside of the new
bushings. Using a hammer and flat plate, drive the
bushings into the mounting tube.
7. Inspect the castor spindle for wear and replace it if
damaged.
8. 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
Grasp the castor wheel and slide the bolt out of the
fork or pivot arm.
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24).
Figure 24
2. Bushings
(Figure 25).