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A
747-400
MAINTENANCE MANUAL
FUEL SCAVENGE SYSTEM SEE A
CENTER WING TANK
(REF)
JET PUMP
FLOAT VALVE IN THE (4 LOCATIONS)
NO. 2 MAIN TANK FLOAT VALVE IN THE
NO. 3 MAIN TANK
A A
NO. 2 MAIN TANK NO. 3 MAIN TANK
(REF) (REF)
HOUSING (2 LOCATIONS) FUEL STRAINER A A
(2 LOCATIONS) TANK THE CENTER WING FLOAT VALVE IN
OUTBD FWD A FUEL SCAVENGE SYSTEM BSEE HOUSING STRAINER FUEL
(REF) INTERCOSTAL (REF) CENTER WING TANK REAR SPAR OF THE
SPANWISE BEAM MID-SPAR OF THE SPANWISE BEAM
NO. 2 (REF) (REF) CENTER WING TANK NO. 1 (REF)
A-A
Fuel Strainer Housing for the Fuel Scavenge System
Figure 401 (Sheet 1)
A78563
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
FUEL STRAINER HOUSING
Fuel Strainer Housing for the Fuel Scavenge System
Figure 401 (Sheet 2)
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A78569
A
747-400
MAINTENANCE MANUAL
(3)
AMM 28-11-00/801, Fuel Tanks
(4)
AMM 28-11-01/401, Center Wing Tank Access Doors
(5)
AMM 28-11-09/401, Spanwise Beam Access Door
(6)
AMM 28-15-00/501, Fuel Scavenge System
(7)
AMM 28-26-00/201, Defuel
(8)
SWPM 20-20-00, Electrical Bond and Ground
E.
Access
(1)
Location Zones
131 Center Section Wing Box, Left
132 Center Section Wing Box, Right
(2)
Access Panels
131EZ Center Wing Tank Access Door
132CZ Center Wing Tank Access Door
131AZ Spanwise Beam Access Door
131BZ Spanwise Beam Access Door
131CZ Spanwise Beam Access Door
132AZ Spanwise Beam Access Door
F.
Install the Fuel Strainer Housing
S 864-060
WARNING:_______OBEY ALL THE FUEL TANK PURGING AND ENTRY PRECAUTIONS. YOU CAN CAUSE AN INJURY TO A PERSON AND CAUSE DAMAGE TO THE AIRPLANE.
(1)
Go into the center wing tank.
S 164-100
(2)
Prepare the fuel strainer housing and the tank structure (rear spar) for a faying surface bond (SWPM 20-20-00).
S 644-041
(3)
Lightly lubricate the new O-ring (for the fuel strainer) with the petrolatum.
(4)
Put the O-ring in the groove of the fuel strainer housing.
S 434-040
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747-400 MAINTENANCE MANUAL
S 114-101
(5) Make sure the faying surfaces between the fuel strainer housing and
rear spar are clean and free from contamination (O-ring lubrication
etc).
S 424-036
(6) Put the fuel strainer housing in the correct position.
(a) Align the slot in the fuel strainer housing with the
anti-rotation plate.
S 434-037
(7) Have a person go into the wheel well for the wing landing gear and
do these steps:
(a) Put the washer and the nut on the fuel strainer housing.
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