UNEVEN OR ERRATIC SERVICE BRAKES ON PUSHER AXLE

TM9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

65. UNEVEN OR ERRATIC SERVICE BRAKES ON PUSHER AXLE.

Check both brakedrums (1) and brakeshoes (2) for damage or foreign material

Step 1.

(page 4-910).

If brakedrums or shoes are damaged or dirty, replace clean (page

4-910) or (page 4-616), or notify direct support maintenance for

repair.

Check four air chambers and wedge assemblies (3) for damage and freedom of

Step 2.

If air chambers or wedge assemblies are damaged or binding, replace

(page 4-692) and (page 4-615), or notify direct support maintenance

for repair.

Check hoses from brake chambers (3) to pusher axle relay valve (4) for damage

Step 3.

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

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

Check pusher axle relay valve (4) for damage or leaks by listening for hissing or

Step 4.

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

If valve is damaged or leaking, replace (page 4-779).

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