(8)  
SWPM 20-20-00, Electrical Ground and Bond

 B.
Access

 (1)  
Location Zone
 Area Between Nose Gear Well and Fuselage, Left

 C.
Procedure

 S 824-045
 (1)  
Align the fuel system card file with the alignment pins and hold in position.

 S 424-046

 (2)  
Install the eight screws and washers to attach the fuel system card file to the structure.

 NOTE: There are four screws and washers along the top and four
____ screws and washers along the bottom of the fuel system card file.
 S 434-047
 (3)  
Install the bonding jumper:

 (a)  
Prepare the bonding jumper and bonding jumper attachment hardware for an electrical surface bond (SWPM 20-20-00).

 (b)  
Install the bonding jumper, washer and bolt to the bonding jumper attachment hardware (View A).

 (c)  
Tighten the bolt.

 (d)  
Measure the bonding resistance across the bonding jumper (SWPM 20-20-00).

 NOTE: The resistance must not be more than 0.002 ohm.
____
 S 824-054
 (4)  
Align the wire bundle support bracket and wire bundles with the fuel system card file.

 S 434-053

 (5)  
Install the screws and washers (4 locations) that attach the wire bundle support bracket to the fuel system card file.

 (6)
Connect all electrical connectors to the fuel system card file.

 S 434-048
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 S 844-049
 CAUTION: DO NOT TOUCH THE CARDS BEFORE YOU DO THE PROCEDURE FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE CARDS.
 (7)  Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
 S 434-050
 (8) Install all these cards in the fuel system card file: ~.............................................................................. | CARD | REFERENCE | ................................................................................ |Reserve Tank Transfer Single Point Sensor Control Card | AMM 28-16-08/401 | ................................................................................ |Fuel System Management Cards | AMM 28-22-13/401 | ................................................................................ |Valve Position Logic Cards | AMM 28-22-14/401 | ................................................................................ |Fuel System EICAS Interface Cards Main and Slave | AMM 28-22-15/401 | ................................................................................ |Fuel Jettison Control Cards | AMM 28-31-15/401 | ................................................................................ |Fuel Jettison Single Point Sensor Control Card | AMM 28-31-17/401 | 2.........................................................…....................1
 S 864-025
 (9)  
Make sure these circuit breakers are closed:

 (a)  
On the main power distribution panel, P6: 1) 6C17, FUEL JTSN CONT B 2) 6C18, JTSN NOZZLE VLV CONT R 3) 6D05, FUEL QTY 1 4) 6D06, FUEL QTY 2 5) 6D17, FUEL JTSN CONT A 6) 6D18, JTSN NOZZLE VLV CONT L 7) 6E17, CTR R & MAIN 2 JTSN VLV 8) 6F05, FUEL SYS MGMT CARD A 9) 6F06, FUEL SYS MGMT CH 1 10) 6F07, FUEL SYS MGMT CARD B 11) 6F08, FUEL SYS MGMT CH 2 12) 6F17, CTR L & MAIN 3 JTSN VLV 13) 6G01, FUEL SHUTOFF VALVE ENG 1 14) 6G02, FUEL SHUTOFF VALVE ENG 2 15) 6G03, FUEL SHUTOFF VALVE ENG 3 16) 6G04, FUEL SHUTOFF VALVE ENG 4 17) 6G05, FUEL SHUTOFF VALVE APU 18) 6L14, FUEL XFEED VALVE ENG 1 19) 6L15, FUEL XFEED VALVE ENG 2 20) 6L16, FUEL XFEED VALVE ENG 3

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-22-16
 ALL  ú ú 06 Page 406 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 21) 6L17, FUEL XFEED VALVE ENG 4
　
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