Listen for air pressure releasing from
quick release valve while assistant
fully applies and releases service
brakes (TM 9-2320-364-10).
(1) If air pressure is not released
from quick release valve,
replace quick release valve
(2) If air pressure is released from
quick release valve, quick release
valve is OK.
Wear safety goggles when performing leakage tests on valves. Failure to do so may result in serious eye
injury due to high pressure air.
Apply and release brake pedal
(1) If service brakes on Axles No. 3
through No. 5 do not release, fault
not corrected. Notify DS
(2) If service brakes on Axles No. 3
through No. 5 do release, fault has