REMOVE FORWARD FUEL TANK VENT VALVE
Procedure is same to remove vent
valve from No. 1 or No. 2 forward fuel
tank. Removal of No. 2 (right) vent
valve is shown here.
Remove 30 bolts (1) and washers (2).
Remove door (3) and gasket (4) from forward
access hole (5).
Do not puncture or scratch lining
of fuel tank. If lining is broken, fuel
penetrates and activates self-sealing
layers. Activated layers swell and trap
fuel. Activated green spongy material
also contaminates fuel system. This
makes it necessary to replace fuel
tank and flush fuel system.
Working through forward access hole (5),
disconnect hose (6) from valve (7). Plug hose.
Disconnect tube (8) from valve (7).
Remove four bolts (9) and washers (10).
Remove valve (7) and adapter (11) from tank
(12) as a unit.
Four different types of forward fuel
cells are used on the helicopter. Each
is interchangeable, but has a different
assembly between valve adapter
and cell. Goodyear cells have four
bushings. FPT cells have an adapter
plate and Uniroyal cells have nothing
between adapter and cell.
Remove shim plate (13) or four bushings (14)
from tank (12).
Cover access hole (14) in tank (12). Use barrier
material (E80) and tape (E388).
END OF TASK