Brake Assembly and Brake Drum

TM 10-3930-631-34

(2) Install spring (6, fig. 4-6) in body (8) and

remove front wheels, wheel cylinder, brake assembly

install a cup (5) and a piston (4) in each end.

and disassemble front wheel.

b. Inspection and Repair.

(3) Install boots (3). Boots must be properly

located in grooves in body.

(1) Refer to TM 10-3930-631-12 for F

(4) Install bleed screw (7) in body.

procedures on repair and replacement for brake shoes

e. Installation. Refer to TM 10-3930-631-12 and

(11, fig.

4-7) and brake adjuster assembly (10).

install wheel cylinder.

4-7. Brake Assembly and Brake Drum

a. Removal. Refer to TM 10-3930-631-12 and

Upper spring

7. Lock washer

13.

Lock washer

Lower spring

8. Nylon washer

14.

Wear plate

Cylinder link

9. Slide

15.

Screw

10. Adjuster assembly

16.

Lock washer

Screw

11. Brake shoe

17.

Bracket

Nut

12. Screw

Figure 4-7. Service brake, exploded view.

(2) Inspect and repair brake drum (part of wheel

(b) Inspect lining wear pattern (fig.

4-8).

18, fig. 3-16) as follows:

Resurface or replace bell mouthed or barrel shaped

(a) Check inside diameter of brake drum at

drums. Scored drums should be resurfaced if scoring is

points 45 degrees apart.

Resurface drum if

over 0.010 inch (0.254 mm) deep. Resurface drums that

measurements differ more than 0.010 inch (0.254 mm).

are heat checked.

4-10