TM 9-2330-384-14&P
Table 4-2. Unit Troubleshooting Procedures (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKES
5.
BRAKES WILL NOT RELEASE
Step 1.
Check brake adjustment (see paragraph 4-34).
Adjust brakes (see paragraph 4-34).
Remove wheel and drum assembly (see paragraph 4-46). Inspect brake shoe
Step 2.
assembly for damage (see paragraph 4-35).
If brake shoes are damaged, replace' (see paragraph 4-35).
BRAKES GRAB
6.
Step 1.
Check brake adjustment (see paragraph 4-34).
Adjust brakes (see paragraph 4-34).
Step 2.
Check for damage to brake chamber (see paragraph 4-40).
If brake chamber is damaged, replace (see paragraph 4-40).
Check for leaking or broken air line between ratio relay valve and brake chamber
Step 3.
(see paragraph 4-39).
If air line is leaking or broken, replace (see paragraph 4-39).
Step 4.
Remove wheel and drum assembly (see paragraph 4-46). Inspect brake shoe
assembly for wear or damage (see paragraph 4-35). Inspect linings for oil, grease,
or foreign material.
If brake shoe linings measure in. (6.35 mm) or less at their thinnest point, if
brake shoes are damaged, or if linings are oil or grease soaked, replace brake
shoes (see paragraph 4-35).
Notify direct support maintenance to check drum for out-of-round condition.
Step 5.
7.
BRAKES DRAG
Step 1.
Check brake adjustment (see paragraph 4-34).
Adjust brakes (see paragraph 4-34).
Remove wheel and drum assembly and inspect drum for damage (see paragraph
Step 2.
If brake shoes are damaged, replace (see paragraph 4-35).
If drum is damaged, replace (see paragraph 4-46).
Step 3.
Notify direct support maintenance to check drum for out-of-round condition.
4-23
