SERVICE BRAKES DO NOT WORK WHEN TRUCK IS BEING TOWED CONTINUED

TM9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

66. SERVICE BRAKES DO NOT WORK WHEN TRUCK IS BEING TOWED CONTINUED.

Check hose (1) from quick release valve (2) to right front service

Step 11.

gladhand (3) for damage or leaks by listening for hissing or using

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

If hose or gladhand are damaged or leaking, repair or replace

(page 4-609).

Check service hookup hose (4) and two gladhands (5) color coded blue

Step 12.

for damage, clogs, or leaks by listening for hissing or using soap

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

a. If hookup hose is damaged, clogged, or leaking, repair, re-

place, or clean (page 4-609).

b. If hookup hose is not damaged, clogged, or leaking, go to

SERVICE BRAKES FAIL TO APPLY OR RELEASE, OR APPLY OR RE-

LEASE SLOWLY (page 3-141), for vehicle being towed.

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