S 944-074
(4)
Go into the fuel tank.
S 034-075
(5)
Disconnect the wire terminals from the terminal block of the applicable tank units and compensator or densitometer.
S 034-076
(6)
Loosen the strain relief clamps at the terminal blocks and remove wires from the clamps.
S 394-077
(7)
Remove electrical wire bundle seals from tank baffles.
S 034-078
(8)
Remove all wire bundle clamps that attach the wire bundle to the fuel tank structure.
S 034-079
(9)
Pull the wire bundle back through each of the baffle seal areas to the tank bulkhead connector.
S 034-082
(10)
Remove the connector from the bulkhead surface.
S 034-083
(11)
Discard the connector O-ring.
S 024-084
(12)
Remove the FQIS wire bundle from the tank.
S 864-152
(13)
Keep the airplane in the prepared for fuel tank entry configuration to do the installation task.
TASK 28-41-09-404-157
5. FQIS Wire Bundle in the Center Wing Tank Installation (Fig. 402)_____________________________________________________
A. Consumable Materials
(1)
A00249 Sealant - BMS 5-26 Type II Class B
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 28-11-00/201, Fuel Tanks
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28-41-09
ALL ú ú 01 Page 425 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(3)
AMM 28-41-00/501, Fuel Quantity Indicating System
(4)
AMM 28-41-01/401, Fuel Quantity Tank Unit
(5)
AMM 28-41-02/401, Fuel Quantity Compensator
(6)
AMM 28-41-11/401, Fuel Quantity Densitometer
(7)
AMM 51-31-01/201, Seals and Sealing
(8)
AIPC 28-41-01, Fig. 3
(9)
AIPC 28-41-02, Fig. 1
(10)
AIPC 28-41-03, Fig. 1
(11)
AIPC 28-41-12, Fig. 2
(12)
SWPM 20-20-00, Electrical Bond and Ground
(13)
SSM 28-41-01
C.
Access
(1)
Location Zones
131 Center Section Wing Box, Left
132 Center Section Wing Box, Right
(2)
Access Panels
131AZ Spanwise Beam Access Door
131BZ Spanwise Beam Access Door
131CZ Spanwise Beam Access Door
131DZ Spanwise Beam Access Door
131EZ Center Wing Tank Access Door
132AZ Spanwise Beam Access Door
132BZ Spanwise Beam Access Door
D.
Prepare the Airplane for FQIS Wire Bundle Installation
S 864-085
WARNING:_______OBEY THE PURGING AND FUEL TANK ENTRY PRECAUTIONS. FAILURE TO OBEY THE PRECAUTIONS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1)
Purge and prepare to go into the center fuel tank, if it is not done (AMM 28-11-00/201).
S 864-086
(2)
Make sure that the airplane is in the configuration prepared for the wire bundle removal.
S 434-087
(3)
Make sure that an O-ring is installed in the groove of the FQIS wire bundle connector.
E.
Procedure
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-41-09
ALL ú ú 01 Page 426 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-088
WARNING:_______OBEY THE FUEL TANK ENTRY PRECAUTIONS. FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1)
Obey the fuel tank entry precautions (AMM 28-11-00/201).
S 944-089
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 燃油 FUEL 4(131)
