SPRING BRAKES WILL NOT RELEASE

TM 9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 3.

Check for damage or leaks in four lines (3) from relay valve (4) to spring

brake chambers (5) by listening for hissing sound or using soap solution

and watching for bubbles (page 4-1).

If lines are damaged or leaking, repair or replace (page 4-609).

Step 4.

Check four spring brake air chambers (5) for damage or leaks by listening for

hissing sound or using soap solution and watching for bubbles (page 4-1).

If chambers are damaged or leaking, replace (page 4-701), or notify

direct support maintenance for repair.

TA239722

3-135