(a)
Torque the coupling connector 60 to 70 pound-inches to make sure the coupling connector is fully engaged.
S 284-179
(2) Measure the bonding resistance between the bonding jumper on the airplane wire bundle connector and the rear spar structure (SWPM 20-20-00).
NOTE: The bonding resistance must not be more than 0.010 ohm.
____
S 434-031
(3)
Install lockwire from the jamnut to the bracket.
S 434-033
(4)
Install lockwire from the connector plug to the bracket.
S 414-066
(5)
Install the inspar removable ribs in the outboard tank if they were removed (AMM 57-12-01/401).
S 864-068
(6)
Remove the airplane from the wing jigged position (SRM 51-50-02).
S 714-069
(7)
Go out of and close the fuel tank (AMM 28-11-00/201).
NOTE: This procedure connects the airplane battery, but does not
____ supply electrical power (AMM 24-22-00/201).
H. Test of the Fuel Quantity Indicating System
S 864-162
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-164
(2)
Refuel the applicable tank(s) to the volumetric top off (VTO) quantity (AMM 12-11-01/301).
(3)
Do this CMC ground test, <FUEL QUANTITY IND (AMM 28-41-00/501).
(4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 744-165
S 864-156
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-41-09
ALL ú ú 03 Page 423 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TASK 28-41-09-004-070
4. FQIS Wire Bundle from Center Wing Tank Removal______________________________________________
A. References
(1)
AMM 28-11-00/201, Fuel Tanks
(2)
AMM 28-26-00/201, Defueling
(3)
AMM 51-31-01/201, Seals and Sealing
(4)
AIPC 28-41-01, Fig. 3
(5)
AIPC 28-41-02, Fig. 1
(6)
AIPC 28-41-03, Fig. 1
(7)
AIPC 28-41-12, Fig. 2
(8)
SSM 28-41-01
B.
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
C.
Prepare the Airplane for FQIS Wire Bundle Removal
S 654-173
(1) Defuel the airplane (AMM 28-26-00/201).
S 864-072
WARNING:_______OBEY THE PURGING AND FUEL TANK ENTRY PRECAUTIONS. FAILURE TO OBEY THE PRECAUTIONS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Do the Fuel Tank Maintenance Practices procedure to purge and prepare the applicable fuel tank for entry (AMM 28-11-00/201).
D.
Procedure
S 034-080
(1)
Disconnect the applicable mating plug on the outer side of the fuel tank.
S 034-081
(2)
Remove the jamnut that holds the tank connector to the tank bulkhead.
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28-41-09
ALL ú ú 01 Page 424 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-073
WARNING:_______OBEY THE FUEL TANK ENTRY PRECAUTIONS. FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
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