UNEVEN OR ERRATIC SERVICE BRAKES ON TANDEM AXLE WHEELS CONTINUED.

TM9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 5.

Check rear axle relay valve (3) for damage or leaks by listening for hissing or

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

If relay valve is damaged or leaking, replace (page 4-785) or notify

direct support maintenance for repair.

Step 6.

Check treadle valve (5) for damage or leaks by listening for hissing or using

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

If treadle valve is damaged or leaking, replace (page 4-720).

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