TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387-10 3-6 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Table 3-1. Troubleshooting (Cont’d). BRAKES 15. POOR SERVICE BRAKING ACTION All causes. Notify unit maintenance. 16. SERVICE BRAKES DRAGGING All causes. Notify unit maintenance. 17. BRAKE WARNING LAMP ASSEMBLY ON Step 1. Check to see if parking brake is partially applied. Disengage parking brake. Step 2. Other causes. Notify unit maintenance. 18. PARKING BRAKE FAILS TO HOLD VEHICLE Clean and adjust parking brake (para. 3-13). If parking brake still fails to hold vehicle, notify unit maintenance. WHEELS AND TIRES 19. WHEELS WOBBLE OR SHIMMY Step 1. Check to see if wheel lug nuts are loose. Tighten loose lug nuts (para. 3-25) and notify unit maintenance to properly torque lug nuts. Step 2. Inspect for mud or dirt buildup inside the rim. Remove any mud or dirt buildup. Step 3. Check tires for proper inflation pressure. Step 4. Other causes. Notify unit maintenance. 20. EXCESSIVE OR UNEVEN TIRE WEAR Step 1. Check tires for proper inflation pressure. Step 2. Other causes. Notify unit maintenance. 21. VEHICLE WANDERS TO ONE SIDE ON LEVEL PAVEMENT Step 1. Check tires for proper inflation pressure. Step 2. Other causes. Notify unit maintenance.