Mounting The Cutting Unit To The Traction Unit; Servicing The Castor Arm Bushings - Toro 30551 Operator's Manual

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Figure 24
1. Castor arm
5. Roll the cutting unit away from the traction unit,
separating the male and female sections of the PTO
shaft (Fig. 25).
Danger
If the engine is started and the PTO shaft is
allowed to rotate, serious injury could result.
Do not start the engine and engage the PTO lever
when the PTO shaft is not connected to the gear
box on the cutting unit.
Figure 25
1. PTO shaft
Mounting the Cutting Unit to
the Traction Unit
1. Position the machine on a level surface and shut the
engine off.
2. Move the cutting unit into position in front of the
traction unit.
3. Slide the male PTO shaft into the female PTO shaft.
(Fig. 25)
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2. Ball joint mount
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20
4. Move the lift lever to the Float position. Push the lift
arms down until the holes in the ball joint mounts line
up with the holes in the castor arms (Fig. 24).
5. Secure the ball joint mounts to the castor arms with the
capscrews and flange nuts.
6. Raise the cutting unit and place blocks under it to
prevent it from falling during assembly.
7. Connect the counterbalance to the traction unit brackets
with lock pins (Fig. 23).
8. Remove the blocks from under the cutting unit. Make
the final counterbalance adjustments under actual
cutting conditions; refer to Adjusting the Tension
Spring, page 17.
Servicing the Castor Arm
Bushings
1. Raise the cutting unit so that the wheels are off of the
floor and block it 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.
Also drive the other bushing out of the tube (Fig. 26).
Clean the inside of the tubes to remove dirt.
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1
Figure 26
1. Front 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 of the parts in place.
2. Bushings