Controls System
Maintenance
Adjusting the Parking
Brake
If the parking brake does not hold securely, an
adjustment is required.
1.
Park the machine on a level surface and engage
the brake.
2.
Shut off engine and wait for all moving parts to
stop. Remove and retain the rear cover panel in
front of the Operator’s platform.
3.
With the park brake engaged, the compression
spring on both sides should measure 51 mm (2
inches). The gap between the trunnion and the
shoulder should measure 3-6 mm (0.12-0.24
inch) on the lower brake linkages.
g394685
Figure 42
1.
Nut to adjust compression
spring
5.
Shoulder
2.
Compression spring
6.
3-6 mm (0.12-0.24 inch)
3.
51 mm (2 inches)
7.
Two jam nuts
4.
Trunnion
8.
Clevis yoke jam nut
4.
To adjust the spring length, turn the nut
clockwise to shorten the spring. Cycle the park
brake lever off and on and re-measure the spring
length and check the gap.
5.
To adjust the gap, loosen the jam nuts on the
lower brake linkage against the clevis yokes.
Using the two jam nuts, tighten together and
rotate the linkage in the appropriate direction to
either increase or decrease the gap. Cycle the
park brake lever off and on and re-measure gap
and spring length.
6.
Engage the park brake and check. If more
adjustment are needed, repeat steps
and
7.
Retighten the jam nuts.
8.
Install the left rear hydro cover.
Motion Control Linkage
Adjustment
1.
Park the machine on a level surface.
2.
Stop engine, wait for all moving parts to stop,
and remove key. Engage parking brake.
3.
Loosen the two knobs that secure the front
reference/speed control bar and push it all the
way forward. Slightly tighten the knobs.
4.
With the motion control levers in the
neutral position, the gap between the front
reference/speed control bar should measure 95
mm (3.75 inches).
g387380
Figure 43
1.
Right hand motion control
lever
3.
95 mm (3.75 inches)
2.
Front reference/speed
control bar
5.
If an adjustment is needed, remove the knee
pad.
6.
Loosen the upper jam nut at the base of
the ball joint as shown in
. Adjust
the control rod length by turning the two jam
nuts. To increase the gap, turn the control rod
counterclockwise. To decrease the gap, turn the
control rod clockwise.
49
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