(1) Loosen air hose 102 at cab floor fitting.
(2) Start engine (TM 9-2320-365-10).
(3) Push in TRAILER AIR SUPPLY control
(TM 9-2320-365-10).
(4) Check for presence of air at air hose 102.
(5) Shut down engine (TM 9-2320-365-10).
(6) If air is not present, go to step 7 of this fault.
(7) If air is present, replace air hose 124
(para 11-19).
(8) Tighten air hose 102 at cab floor fitting.
Change 1 2-1742.7
TM 9-2320-365-20-2
