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DEFUELING – GRAVITY METHOD | Up
TM-1-1520-238-23-1 Helicopter Attack AH-64A Apache (NSN 1520-01-106-9519) (EIC: RHA) Manual | Next
DEFUELING – GRAVITY METHOD – continued |
TM 1-1520-238-23
1-59
1.21.
DEFUELING – GRAVITY METHOD – continued
b. Remove forward fuel tank filler cap (1).
(1) Lift and turn locking tab (2) to OPEN.
(2) Pull filler cap (1) out of filler port (3). Pull until
filler cap chain (4) opens check valve (5).
(3) Position filler cap chain (4) in locking detent
(6) to hold check valve (5) open.
(4) Connect defuel nozzle ground (7) to ground-
ing receptacle (8).
(5) Insert defueling nozzle (9) into filler port (3).
CAUTION
Fuel cell may be damaged if air does not
flow into fuel cell during defueling.
c. Check vent tubes (10) and (11) for air flowing
into fuel cell.
(1) Stop defueling if air does not flow into fuel
cell.
d. Stop defueling pump when fuel cell is empty.
e. Remove defueling nozzle (9).
(1) Remove defueling nozzle (9) from gravity fill-
er port (3).
(2) Remove defueling nozzle ground (7) from
grounding receptacle (8).
f. Install filler cap (1).
(1) Release filler cap chain (4) from locking det-
ent (6).
(2) Install filler cap (1) into filler port (3).
(3) Turn locking tab (2) to CLOSED. Press tab
(2).
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