Note

Make sure to check the brake drum surface as described in Step 2 before replacing brake linings; oversize linings may be required.

5. Before replacing brake linings, check the shoe web (Figure 8) for cracks or distortion. To check for distortion, lay the web on a flat surface, such as a piece of glass or surface plate. Check how close the web seats along the glass. If the web is twisted at any point, the shoe is bent and must be replaced.

6. Replace riveted brake linings as follows:

a. Drill out the rivets. Match the drill bit to the rivet head as closely as possible to prevent enlarging the rivet hole in the shoe web.

CAUTION Do not attempt to punch out the rivets as this may distort the shoe web.

b. With a steel brush, clean the brake lining surface thoroughly.

c. Rivet the new linings to the brake shoes. It is important to start riveting from one end of the lining and work toward the other end to prevent buckling.

d. Bevel the ends of both brake shoes with a file (Figure 9).

7. On early style brakes, check the cam lever stud play on the cam lever. If excessive play is detected, have a Harley-Davidson dealer install a new cam lever bushing.

8. Inspect the brake shoe return springs for wear. If they are stretched, they will not fully retract the brake shoes from the drum, resulting in a power-robbing drag on the drums and premature wear of the linings. Also check springs for rust. Replace as necessary; always replace as a pair.

REAR DRUM BRAKE (1966-1972)

All 1966-1972 models are equipped with a rear hydraulic drum brake assembly (Figure 10).

1. Remove the rear wheel as described in Chapter Nine.

2. Remove the brake dram (3, Figure 10).

CAUTION Do not touch the brake linings (12, Figure 10) during removal. Instead, place

a clean shop rag on the linings to protect them from oil and grease.

3. The rear brake shoes are manufactured in different widths. The wide shoe is installed in the front (facing front of bike) and the narrow shoe in the rear. The brake shoes should be identified with an "F" or "R" respectively. Mark the brake shoe casting with a felt-tipped pen to represent positioning. The brake shoes must be returned to their original positions during installation.

4. Remove the upper brake shoe return spring.

5. Remove the anchor stud nut (25) and washer from the back side of the brake side plate (21).

6. Remove the brake shoes from the brake side plate together with the anchor stud (23).

® REAR DRUM BRAKE

(1966-1972)

1. Screw

2. Dowel pin

3. Brake drum

4. Axle sleeve

5. Collar

6. Spacer

8. Piston assembly

9. Wheel cylinder

10. Bleed screw

11. Brake shoe retainer

12. Brake shoes

13. Rivets

14. Springs

15. Brake shoes

16. Screws

17. Lockwashers

18. Plate

19. Block

20. Plate

21. Brake side plate

22. Screws

23. Anchor stud

24. Lockwasher

25. Nut

26. Swivel fitting

27. Swivel fitting gaskets

28. Wheel cylinder bolt

29. Brake hose

30. Lockwasher

31. Nut

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