TM 9-2330-267-14&P3-7. OPERATIONAL AIR LEAK CHECK.a. Couple trailer to towing vehicle and connectall intervehicular air hoses (para 2-10).b. Start towing vehicle and watch air pressuregage (1) for normal reading. Refer to towing vehicletechnical manual for instructions.c. Push brake pedal down to applied positionand hold.d. Shut down towing vehicle engine.e. Watch air pressure gage (1) for two minutes.If pressure drops more than 10% within two minutes,notify organizational maintenance.3-12
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