TM 9-2320-386-10 3-14 Change 1 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Table 3-1. Troubleshooting (Contd). 29. LONG OR CONTINUOUS PURGE CYCLE Notify unit maintenance. 30. INSUFFICIENT AIR PRESSURE AS INDICATED BY LOW AIR PRESSURE BUZZER OR AIR PRESSURE GAUGE Step 1. Check to see if air reservoir drain valves are open. If open, close air reservoir drain valves (para. 2-3). Step 2. Check air compressor operation. a. Start engine (para. 2-12) and allow air pressure to build. b. Touch outlet line of air compressor. c. If compressor outlet line is warm, proceed to step 3. d. If compressor outlet line is cold, notify unit maintenance. Step 3. Check air lines for loose connections or damage. a. Tighten loose connections. b. If air lines are damaged, notify unit maintenance. Step 4. Deleted Step 5. Notify unit maintenance if condition continues. END OF TESTING! SLAVE RECEPTACLE 31. SLAVE CABLE CONNECTED BUT ENGINE WILL NOT TURN OVER Step 1. Check for poor receptacle connections. Make proper connections. Step 2. Check if slave receptacle battery cables are loose or disconnected. If loose or disconnected, notify unit maintenance.