TM 5-3805-260-24
PARKING BRAKE ADJUSTMENT
ADJUSTMENT OF PARKING BRAKE
1. Brake drum. 2. Brake shoes. 3. Parking brake chamber. 4. Lever. 5. Pin. 6. Rod end. 7. Locknut. 8. Rod. 9.
Locknut. 10. Nut.
WARNING
Make reference to WARNING on first page of
AIR SYSTEM AND BRAKES TESTING AND
ADJUSTING section.
1.
Start the engine and let the air pressure go up to
operating range.
2.
Move the control knob for the parking brake to
OFF (brake released) position. Stop the engine.
NOTE: If no air pressure is available to release the
brake, loosen locknut (9). Turn nut (10) on rod (8) until
nut (10) makes contact with parking brake chamber (3).
Continue to turn nut (10) so that rod (8) moves out of
parking brake chamber (3) and the parking brake is fully
released.
3.
Remove the cotter and pin (5).
4.
Move the control knob for the parking brake to
ON (brake activated) position.
5.
Loosen locknut (9) and adjust nut (10) until it is
.06 + .03 in. (1.5 + 0.8 mm) from the face of
parking brake chamber(3). Tighten locknut (9).
6.
Move control knob for the parking brake to OFF
(brake released) position.
7.
Move lever (4) towards the parking brake
chamber to remove the free movement (slack)
from the lever.
8.
Loosen locknut (7) and turn rod end (6) until the
pin bores in lever (4) and rod end (6) are in
alignment. It will be necessary to move lever (4)
to turn rod end (6) but lever (4) must be in the
same position as in Step 7 when pin (5) is
installed.
9.
Install pin (5) and cotter pin.
10.
Tighten locknut (7).
2-150
