TM 9-2320-272-24-1
Table 2-4. Compressed Air and Brake System Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
COMPRESSED AIR SUPPLY
9. NO AIR PRESSURE (WARNING BUZZER SOUNDING, AIR PRESSURE NOT BUILDING TO NORMAL OPERATING
RANGE AS INDICATED BY GAUGES)
Test 1. Check for leaks.
Step 1. Direct assistant to start engine.
Step 2. Listen and locate leaks.
a. If leakage is found, repair lines or fittings as necessary.
b. If no leakage is found, go to test 2.
Test 2. Check air compressor (1) with engine running.
Step 1. Loosen and bleed air from governor signal line (2) to air compressor (1).
Step 2. Feel if air compressor outlet line (3) is hot.
a. If air compressor (1) is operating normally, outlet line (3) will be hot (under great
pressure). Proceed to test 3 if outlet line (3) is hot.
b. If outlet line (3) is not hot, proceed to step 3.
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