5-6. INTERNAL BRAKES (Cont)
Place washer on camshaft (fig. 4-39). Following marks made at removal, insert camshaft
into mounting bracket from outer side of backing plate. Slide camshaft into place carefully
using rotary motion to position it in bearings and seals without damage.
Install two washers and one spacer over splined end of camshaft and against camshaft mount-
Apply a thin coat of oil on splined end of camshaft and slide slack adjuster (fig. 4-39) into
position. A slight rotary motion of slack adjuster will allow splines in slack adjuster to mesh
with splines on camshaft.
Position washer on splined end of camshaft and install snap ring.
Turn worm shaft of slack adjuster (fig. 4-42) until arm can be positioned in brake air chamber
yoke. Coat 1/2 X 1-13/64 clevis pin with light film of oil and attach arm of slack adjuster to
yoke (fig. 4-39). Secure clevis pin with 1/8 X 7/8 cotter pin.
5-7. INTERNAL BRAKES (A2C MODELS)
1. Plate Assy
8. Pin, spring
9. Pin, round
4. Pin & Washer
16. Brake Shoe Assy
22. Washer, lock
17. Shoe, brake
18. Lining, brake
6. Washer, lock
24. Wheel cylinder
Figure 5-4. Internal brakes (M127A2C, M128A2C, M129A2C)