(1) Tighten air hose 118 at inversion valve delivery
port.
(2) Loosen air hose 221 at supply port of
anti-compounding valve.
(3) Check for presence of air at air hose 221.
(4) If no air is present, replace air hose 221
(para 11-19).
Change 1 2-1661
TM 9-2320-365-20-2