TCM FD35C9, Workshop Manual

Page: 193 / 291

3-79
Fig. 3.253
■
OPERATION TEST OF AUTOMATIC CLEARANCE ADJUSTER (3.5- to 4.0-ton
trucks)
①
Adjust the brake shoe outer diameter nearly to the specified setting size. Push up the adjuster lever with
the fingers to turn the adjuster teeth.
When the adjuster lever is released, it returns to the original position.
Note:
The adjuster teeth may turn back slightly along with the adjuster lever when your fingers are
removed, but the adjuster will operate normally when it is mounted back on the truck.
②
If the adjuster won’t operate as mentioned above when the adjuster lever is pushed up or released, take
the following steps:
● Check the adjuster lever, adjuster, adjuster spring, adjuster cable and shoe return springs for proper
installation.
● Check the shoe return springs and adjuster spring for deterioration and the adjuster for rotation,
damaged tooth, or improper engagement with the adjuster lever teeth. If any defect is found, replace.
(a) ADJUSTER LEVER
(b) ADJUSTER
(c) ADJUSTER SPRING
(d) ADJUSTER CABLE
(e) SHOE RETURN SPRINGS
(f) Shoes expand in this direction