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Brake Maintenance
Adjusting the Parking Brake
Service Interval: Every 25 hours
Every 200 hours
1. Disengage the brake lever (lever down).
2. Measure the length of the spring. The measurement
should be 2-3/4 inch (70 mm) between the washers
(Figure 58).
3. If an adjustment is necessary, loosen the jam nut
below the spring and tighten the nut directly below
the yoke (Figure 58). Turn the nut until the correct
measurement is obtained. Tighten the two nuts
together and repeat on the opposite side of the unit.
4. Turn the nuts clockwise to shorten the spring length
and counterclockwise to lengthen the spring.
5. Engage the parking brake, lever up.
6. Measure the distance between the spring bracket
and the adjusting nut under spring bracket. The
measurement should be 1/4-5/16 inch (5-8 mm)
(Figure 58).
7. If an adjustment is necessary, loosen the jam nut
directly above the trunion roller. Turn the lock
nut below the trunion roller until the correct
measurement is obtained (Figure 58).
8. Tighten the jam nut directly above the trunion roller
(Figure 58).
Note: If the 1/4-5/16 inch (5-8 mm) can not be
achieved, remove a pin from either yoke at the ends
of the brake rod. Adjust the length of the rod so
1/4-5/16 inch (5-8 mm) can be achieved and install
the brake rod.
1. Brake lever-engaged
2. Brake lever-disengaged
3. Spring, 2-3/4 inch (70 mm) 9. Lock nut below trunion
4. Jam nut above trunion
roller
5. Nut below spring bracket
6. Trunion roller
43
Figure 58
7. 1/4-5/16 inch (5-8 mm)
8. Spring bracket
roller
10. Brake rod
11. Yoke
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