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TM 9-2320-270-10
Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AIR PRESSURE LOSS DURING OPERATION
Step 1. Pull TRAILER AIR SUPPLY control (2) out.
a. Operate engine until warning light (3) and buzzer go off.
b. Stop engine.
c. Note AIR PRESSure gage (4) reading.
d. Fully depress and hold service brake pedal for 2 minutes.
e. If pressure loss is more than 5 psi (34 kPa) in 2 minutes,
check air reservoir drains (5), (6), and (7) for damage or
leaking by shutting off engine and listening for the hissing
of escaping air.
TA220924
3-27
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