(1)
Disconnect main air supply hose
from pressure protection valve.
(2)
Start engine (TM 9-2320-365-10).
(3)
If air is not present from pressure
protection valve, replace pressure
protection valve (para 11-27).
(4)
Shut down engine (TM 9-2320-365-10).
(5)
Connect main air supply hose to
pressure protection valve.
Change 1
2-1867
TM 9-2320-365-20-2