(1) Loosen air hose 501 at air/hydraulic
manifold AIR IN B port.
(2) Check for presence of air at air hose 501.
(3) Tighten air hose 501 at air/hydraulic
manifold AIR IN B port.
(4) If air is not present, go to step 12 of this
fault.
(5) If air is present, repair or replace air/hydraulic
manifold (para 19-4).
Change 1 2-1974.17
TM 9-2320-365-20-2