TM 9-2320-386-10 3-9 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Table 3-1. Troubleshooting (Contd). PARKING BRAKE SYSTEM 15. PARKING BRAKE DOES NOT HOLD VEHICLE Step 1. Check parking brake control lever position. If partially applied, pull parking brake control lever all the way up. Step 2. Check parking brake control lever adjustment. Turn knob on end of lever clockwise to increase braking action (para. 2-3). Step 3. If parking brake still fails to hold vehicle, notify unit maintenance. END OF TESTING! 16. PARKING BRAKE DRAGS OR OVERHEATS Step 1. Check parking brake control lever position. If partially applied, release parking brake. Step 2. Check parking brake control lever adjustment. Turn knob on end of lever counterclockwise to decrease braking action (para. 2-3). Step 3. If parking brake still drags, notify unit maintenance. END OF TESTING! WHEELS AND TIRES 17. WHEEL WOBBLES OR SHIMMIES Step 1. Check for loose wheel stud nuts and missing wheel studs. a. Tighten wheel stud nuts if loose (para. 3-9). b. Notify unit maintenance if wheel studs are missing and to torque wheel stud nuts. Step 2. Check for damaged wheel and uneven tire wear. a. Check air pressure in tires. Turn accessory/battery switch to ON position and check that tire pressure setting is at correct pressure for selected terrain. Adjust if necessary (para. 2-19). b. Check air pressure in tires using tire and gauge hose assembly (Appendix B). If air pressure does not match ECU pressure, notify unit maintenance.