(1) Drain air tanks (TM 9-2320-365-10).
(2) Loosen air hose 507 at air/hydraulic
power unit.
(3) Start engine and charge air tanks
(TM 9-2320-365-10).
(4) Check for presence of air at air hose 507.
(5) If air is not present, go to step 7 of this
fault.
(6) If air is present, replace air/hydraulic
power unit (para 19-3).
(7) Drain air tanks (TM 9-2320-365-10).
(8) Tighten air hose 507 at air/hydraulic power
unit.
Change 1 2-1968.1
TM 9-2320-365-20-2
