SPRING BRAKE WILL NOT RELEASE (ONE OR MORE WHEELS)

TM 9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

60. SPRING BRAKE WILL NOT RELEASE (ONE OR MORE WHEELS) - CONTINUED.

Step 3.

Check brake chamber (1) for damage or leaks by listening for hissing or using

soap solution and watching for bubbles (page 4-1).

If brake chamber is damaged or leaking, replace (page 4-701), or no-

tify direct support maintenance for repair.

Step 4.

Check slack adjuster (2) for damage and proper adjustment (page 4-624).

If slack adjuster is damaged or out of adjustment, repair or adjust

(page 4-624).

Check spring brake hand release system (3) for damage.

Step 5.

If release system is damaged, replace (page 4-701), or notify direct

support for repair.

Check brakedrum (4) and brakeshoes (5) for damage (page 4-1).

Step 6.

a. If drum or shoes are damaged, replace (page 4-925 or 4-621) or

notify direct support maintenance for repair.

b. If spring brakes still will not release, notify direct support

maintenance.

TA239725

3-138