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4
2
3
4
5
Figure 5
1. Right-hand push arm
2. Castor arm
3. Ball joint mount
4. Have another person carefully push down on the push
arm until the holes in the ball joint mount line up with
the holes in the castor arm. Immediately slide a 4 x 4 in.
block of wood between the top of the push arm and the
underside of the chassis.
5. Secure the ball joint mount to the castor arm with 2
capscrews (7/16 x 3 in.), flat washers (7/16 in.), and
flange nuts (7/16 in.). Position the flat washers to the
outside of the castor arm.
6. Tighten the large jam nut securing the ball joint to the
push arm (Fig. 5). When tightening the jam nut, hold
the ball joint straight to permit proper oscillation during
raising and lowering of the cutting unit. Carefully
remove the wood block holding the push arm down.
Connecting the Left-Hand Push
Arm to the Cutting Unit
Warning
The left-hand push arm is spring loaded to about
150 lb. (68 kg). Sudden release of the push arm
could cause injury.
Another person is needed to push the arm down
during this procedure.
1. Remove the 2 capscrews, flat washers, and flange nuts
securing the left-hand ball joint mount and chain
bracket to the left-hand castor arm (Fig. 6). Remove the
ball joint mount and chain bracket.
6
1
2-3/4
(70 mm)
4. Capscrews and washers
5. Ball joint
6. Jam nut
10
2. Remove the cotter pin and castle nut securing the
left-hand ball joint mount to the left-hand push arm on
the traction unit. Install the ball joint mount (removed
from the castor arm) to the push arm with the castle nut
and cotter pin previously removed (Fig. 6).
3. Measure the distance from the end of the left-hand push
arm to the center of the ball joint (grease fitting)
(Fig. 6). The distance should be 2-1/2 in. (64 mm). If
the distance is not 2-1/2 in. (64 mm), loosen the jam nut
securing the ball joint to the push arm and rotate the
ball joint in or out until the distance is attained (Fig. 6).
Do not tighten the jam nut at this time.
7
1
2-1/2
(70 mm)
3
6
Figure 6
1. Left-hand push arm
2. Castor arm
3. Ball joint mount
4. Chain mount
4. Have another person carefully push down on the push
arm until the holes in the ball joint mount line up with
the holes in the castor arm. Immediately slide a 4 x 4 in.
block of wood between the top of the push arm and the
underside of the chassis.
Warning
Sudden release of the push arm could cause injury.
Make sure that the wooden block does not slip out.
5. Secure the ball joint mount and chain bracket to the
castor arm with the capscrews, flat washers, and flange
nuts previously removed. Position the flat washers to
the outside of the castor arm. Mount the chain bracket
in the forward set of holes.
6. Tighten the large jam nut securing the ball joint to the
push arm. When tightening the jam nut, hold the ball
joint straight to permit proper oscillation during raising
and lowering of the cutting unit. Carefully remove the
wood block holding the push arm down.
5
2
5
4
5. Capscrews and washers
6. Ball joint
7. Jam nut
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