AXLES WILL NOT LOCK UP.

9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

AIR SYSTEM (CONT)

AXLES WILL NOT LOCK UP.

13.

Step 1. Check for air leaks at TRACTION CONTROL valve.

Tighten loose connections or repair lines.

Step 2. Check for damaged or leaking lines to TRACTION CONTROL valve and air chambers.

Tighten or replace damaged or leaking lines.

Step 3. Check for defective pressure protection valve (go to MALFUNCTION 10, LEFT OR RIGHT

WINDSHIELD WIPER DOES NOT WORK, Step 1).

Replace defective pressure protection valve (para 11-16).

Step 4. Check for air leaks at air chambers on No. 2 and No. 3 axles.

Tighten loose connection.

Step 5. Remove instrument panel (para 7-19). Check TRACTION CONTROL valve for air supply

when TRACTION CONTROL valve is operated.

If TRACTION CONTROL valve has air in but not air out when TRACTION

CONTROL valve is operated, replace defective TRACTION CONTROL valve

(para 9-7).

Step 6. If problem has not been solved, notify the supervisor.