Separating The Cutting Unit From The Traction Unit; Servicing The Bushings In The Castor Arms; Servicing The Castor Wheel And Bearing - Toro 30555 Operator's Manual

Separating the Cutting Unit
from the Traction Unit
1. Position the machine on a level surface, raise the cutting
unit, engage the parking brake, put the traction pedal
in neutral, the PTO lever in the Off position, shut the
engine off, and remove the ignition key.
2. Lower the cutting unit and remove the 4 pins from the
height-of-cut brackets
3. Start the engine and raise the cutting unit frame.
4. Stop the engine and slide the cutting unit away from
the traction unit and carrier frame, separating the male
and female sections of the PTO shaft (Figure 17).
1. PTO shaft
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.
5. The deck carrier frame must be removed if the traction
unit will be used with any other accessory.
Servicing the Bushings in the
Castor Arms
The castor arms have bushings pressed into the top and
bottom portion of the tube which, after many hours of
operation, will wear. To check the bushings, move the castor
fork back and forth and from side to side. If the castor shaft
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 and block it so that it cannot accidentally fall.
2. Remove the lynch pin and thrust washers from the top
of the castor spindle.
Figure 17
3. Pull the castor spindle out of the mounting tube. Allow
the thrust washers 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 18). Also drive the other bushing out of the
tube. Clean the inside of the mounting tube to remove
any dirt.
1
2
1. Lynch pin
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 shaft for wear and replace it if it is
damaged.
7. Push the castor shaft through the bushings and
mounting tube. Slide the spacers onto the shaft and
secure it with the lynch pin.
Important: When the bushings are installed, the
inside diameter may collapse slightly, and this
may not allow the castor shaft to be installed. If
the castor spindle does not slide through the new
bushings and mounting tube, ream both bushings
to an inside diameter of 1.126 inches.
Servicing the 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, provided that the bearing was kept well lubricated,
bearing wear will be minimal. However, failure to keep the
bearing lubricated will cause rapid wear. A wobbly castor
wheel usually indicates a worn bearing.
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G010553
Figure 18
2. Thrust washers