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Figure 20
1. Lift arm
2. Castor arm
5.
Remove the bolts and nuts from the PTO shaft
(Figure
21) and slide the yoke out of the gearbox.
Figure 21
1. Gearbox
2. 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 gearbox on the cutting
unit.
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3. Washer
4. Bolt
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3. Bolts and nuts
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 bushings 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.
1.
Park the machine on a level surface, lower the
cutting unit, engage the parking brake, shut off
the engine, and remove the key.
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
(Figure
22). 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. Use a hammer and flat plate to
drive the bushings into the mounting tube.
6.
Inspect the castor spindle for wear and replace
it if damaged.
7.
Push the castor spindle through the bushings
and mounting tube, slide the thrust washer
and spacer(s) onto the spindle, and install the
tensioning cap on the castor spindle.
Servicing the Castor
Wheels and Bearings
1.
Park the machine on a level surface, lower the
cutting unit, engage the parking brake, shut off
the engine, and remove the key.
20
Figure 22
2. Bushings
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