SERVICE BRAKES DO NOT RESPOND WHEN APPLIED BY TRAILER BRAKE HAND CONTROL

TM9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

66. SERVICE BRAKES DO NOT RESPOND WHEN APPLIED BY TRAILER BRAKE HAND CONTROL.

Check that gladhands (1) are correctly hooked upon trailer

Step 1.

(TM 9-2320-270-10).

If gladhands are not hooked up correctly, take off and connect correctly

(TM 9-2320-270-10).

Step 2.

Check two hoses from gladhands (1) to tractor protection valve (2) for damage

or leaks by listening for hissing or using a soap solution and watching

for bubbles (page 4-1).

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

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