S 434-081
(9)
Install the fuel tube (2 locations) to the fuel strainer housing.
S 434-042
(10)
Install the lockwire through the unions.
S 434-043
(11)
Tighten the bonding clamp(s) and the tube support brackets if they were loosened for removal (SWPM 20-20-00).
(a)
Measure the bonding resistance between the bonding jumper and the tank structure (SWPM 20-20-00).
NOTE: The bonding resistance must not be more than 0.010 ohm.
____
S 394-039
(12)
Use the sealant to apply a fillet seal around the fuel strainer housing and the anti-rotation plate.
S 394-104
(13)
Use the sealant to make a cap seal at the interface between the fuel filter housing and the anti-rotation plate.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 394-105
(14)
Use the sealant to make a cap seal over the lock nut and bolt on the anti-rotation plate.
S 864-063
(15)
Remove all of the unwanted material from the center wing tank.
S 414-044
(16)
Install the spanwise beam access doors 131AZ, 131BZ, 131CZ, and 132AZ (AMM 28-11-09/401).
S 414-045
(17)
Install the center wing tank access doors (AMM 28-11-01/401).
S 714-091
(18)
Do the operational test for the fuel scavenge system
(AMM 28-15-00/501).
G.
External Leak Check - Fuel Strainer Housing
S 654-107
(1) Make sure there is a minimum of 54,000 pounds (24,500 kilograms) of fuel in the center wing tank.
NOTE: This value is for an airplane at nominal airplane
____ attitude (wings level, 0.5 degree nose down). More or less fuel can be necessary at different pitch and roll attitudes.
S 654-108
(2)
Add or transfer fuel to the center wing tank, if it is necessary (AMM 12-11-01/301), (AMM 28-26-00/201).
(3)
No fuel leaks are permitted at the fuel strainer housing assemblies.
S 794-111
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
H. Put the Airplane Back to the Usual Condition
S 084-110
WARNING: DO THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Remove the door locks for the wing and body gear (AMM 32-00-30/201).
S 864-112
(2)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).
TASK 28-15-12-004-042
4. Fuel Strainer Housing Assembly Removal (Fig. 402)
______________________________________
A. General
(1)
This procedure removes all of the components of the fuel strainer housing except the housing body. Because the housing body is not removed, it is not necessary to go into the fuel tank.
(2)
When the components in the fuel strainer housing are removed, any fuel that remains in the fuel-feed mainfold can drain out through the fuel strainer housing. Make sure a suitable container is in place to hold any fuel that remains in the fuel-feed mainfold. The amount of fuel that can drain out of the fuel-feed mainfold is approximately 20 gallons (76 liters).
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