TM 55-1520-240-23-8
10-53
REMOVE MAIN FUEL TANK AFT BOOST PUMP AND CHECK VALVE
(Continued)
10-53
NOTE
Procedure is same to remove aft
boost pump and check valve from No.
1 or No. 2 main fuel tank. Removal
of No. 1 (left) boost pump and check
valve is shown here.
REMOVE TANK AFT ACCESS DOOR
1.
Tag two connectors (1 and 2). Remove lockwire
and disconnect two connectors. Tape wires
and connectors to fuselage (3) for temporary
stowage. Use tape (E388).
When disconnecting fuel hoses from
aft access door, do not allow fittings to
turn. Otherwise, fittings can fail and
block fuel flow.
2.
Hold fitting (4) with wrench. Disconnect vent
hose (5). Plug hose and cap fitting. Tape hose to
fuselage (3) for stowage. Tag hose.
3.
Hold fitting (7) with wrench. Disconnect hose (6).
Remove conical seal (6.1) from hose fitting. Plug
hose and cap fitting. Tape hose to fuselage (3)
for stowage. Tag hose.
4.
Remove hoses (8). Plug hose and cap adapters
(9 and 10). Tag hose.
5.
Hold adapter (12) with wrench and disconnect
hose (11). Remove conical seal (11.1) from hose
fitting. Plug hose and cap adapter (12). Tape
hose to fuselage (3) for stowage. Tag hose.
6.
Remove four nuts (14), washers (13), and bolts
(15).
7.
Slide elbow (16) aft into union adapter (17).
Remove gasket (18).
8.
Remove four nuts (19), washers (20), and bolts
(21).
9.
Remove elbow (16) and gasket (22).
10-260
