(1)
Loosen air hose 120 at air brake protecting
valve supply port FV2.
(2)
Start engine (TM 9-2320-365-10).
(3)
Apply service brakes (TM 9-2320-365-10).
(4)
Check for presence of air at air hose 120.
(5)
Shut down engine (TM 9-2320-365-10).
(6)
If air is not present, go to step 17 of this
fault.
(7)
If air is present, replace air brake protecting
valve (para 11-16).
(8)
Tighten air hose 120 at air brake protecting
valve supply port FV2.
Change 1
2-1742.21
TM 9-2320-365-20-2