(1) Loosen air hose 265 at air brake protecting
valve delivery port TRLR S.
(2) Start engine (TM 9-2320-365-10).
(3) Push in TRAILER AIR SUPPLY control
(TM 9-2320-365-10).
(4) Apply service brakes (TM 9-2320-365-10).
(5) Check for presence of air at air brake protecting
valve delivery port TRLR S.
(6) Shut down engine (TM 9-2320-365-10).
(7) If air is not present, go to step 12 of this
fault.
(8) If air is present, replace air hose 265
(para 11-19).
(9) Tighten air hose 265 at air brake protecting
valve delivery port TRLR S.
Change 1 2-1742.17
TM 9-2320-365-20-2
