TM 9-2320-269-10
TROUBLESHOOTING TABLE - CONTINUED
AIR SYSTEM AND BRAKES - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Air pressure loss during operation - pressure warning light and buzzer come on - Continued.
Step 3.
Run the engine to increase the air reservoir pressure to give an indication of 90 to 120 psi (621 to
827 kPa) on the air reservoir pressure gage (1) and (2). Stop the engine when the warning light (3)
and buzzer have gone off.
a. Fully depress and hold brake pedal for at least two minutes.
b. Observe air pressure gages (1) and (2) for any air pressure loss. Any pressure loss should not
exceed 5 psi (34 kPa).
c. If the air pressure has dropped more than 5 psi (34 kPa) in two minutes or less, notify
organizational maintenance.
TA 222683
3-20