Parking Brake Lever and Linkage

TM 10-3930-630-12

1 Screw

2 Lockwasher

3 Nut

4 Master cylinder

5 Clevis

6 Nut

Figure 4-75. Service brake master cylinder, removal and installation

brake with a cable.

(4) Remove (6) and clevis (5) from master

b. Adjustment. To compensate for brake lining

cylinder (4).

d. Installation.

wear the parking brake lever can be adjusted. If the

adjusting knob on the parking brake lever will no longer

(1) Install nut (6, Fig. 4-75) and clevis (5) on

provide correct brake adjustment and sufficient brake

master cylinder.

lining is still available, further adjustment can be made

(2) Install master cylinder on truck and secure

with the brake cable.

with screws (1), lockwashers (2) and nuts (3). Connect

(1) Place brake lever in the fully released

ground wire to rear master cylinder mounting screw.

position.

NOTE

(2) Remove setscrew (Fig. 4-76) in brake lever

adjusting knob. Rotate knob (Fig. 4-76) one or two turns

Internal-external tooth lockwashers (2)

clockwise. Check adjustment by engaging brake.

must be installed with mounting screws for

(3) Repeat adjustment ((2) above) as

radio suppression.

necessary to assure correct lining contact with drum.

After adjustment is correct, install setscrew to secure

(3) Connect clevis (Fig. 4-69) to brake pedal

adjusting knob.

adjust pedal travel (par 4-87) as necessary.

(4) If above steps do not provide proper

(4) Refer to paragraph 4-89 to fill master

braking action, adjust cable.

cylinder and bleed brake system.

(5) Refer to figure 4-77 and remove cotter pin,

4-91. Parking Brake Lever and Linkage

washer and clevis pin securing clevis to cam lever.

a. General The parking brake lever mounted next

to the instrument panel is connected to the parking

4-83