DUAL AIR BRAKE SYSTEM

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

DUAL AIR BRAKE SYSTEM

BRAKES WILL NOT RESPOND PROPERLY.

Step 1. Check air pressure gage for 100 to 120 psi (690 to 827 kPa).

If air pressure gage does not read 100 to 120 psi (690 to 827 kPa), go to AIR

SYSTEM troubleshooting, MALFUNCTION 1, AIR PRESSURE BUILDUP SLOW.

Step 2. Check air brake lines and brake components for leakage or damage.

Replace or repair leaking or damaged air lines or brake components (go to

Alphabetical Index to find component replacement procedures).

Step 3. Check slack adjusters for adjustment or damage.

Adjust brakes (para 11-7) or replace damaged slack adjusters (para 11-5 or 11-6).

Step 4. Check operation of air brake chambers.

If brake chamber rod does not extend when brakes are applied, check internal

brake.

Check internal brake parts for oil contamination or damage.

Replace or repair brake parts as required (para 10-3, 11-2, 11-3, 11-4).