747-400 AMM 飞机维护手册 燃油 FUEL 3(72)

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 20) 6L16, FUEL XFEED VALVE ENG 3
 21) 6L17, FUEL XFEED VALVE ENG 4
 (b)  On the overhead circuit breaker panel, P7:
 1)  7H21, FUEL XFR VALVE MAIN 1
 2)  7H22, FUEL XFR VALVE RES 2A & 3A
 3)  7H23, FUEL XFR VALVE RES 2B & 3B
 4)  7H24, FUEL XFR VALVE MAIN 4
 (c)  On the DC power distribution panel, P180:
 1)  180M8, FUELING VALVE 2
 2)  180M9, FUELING PWR - HOT BAT
 3)  180C25, FUELING LTS PANEL
 4)  180C26, FUELING LTS RECP
 5)  180H17, FUEL SYS EICAS INTFC CONT
 (d)  On the left power distribution center, P414:
 1)  414F22, FUELING PWR

 S 844-039
 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.
 (2)  Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
 S 034-040
 (3) Remove all the cards from 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
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A
747-400 MAINTENANCE MANUAL
 S 034-043
 (4)  Disconnect all electrical connectors from the fuel system card file.
 NOTE: Attach identification tags to all electrical connectors.
____
 S 034-051
 (5)  
Remove the screws and washers (4 locations) that attach the wire bundle support bracket to the fuel system card file.

 S 034-052

 (6)  
Remove the wire bundle support bracket.

 NOTE: The wire bundles are attached to the wire bundle support
____
 bracket.

 S 034-044
 (7)
Disconnect the bonding jumper from the fuel system card file.

 S 034-042

 (8)  
Hold the fuel system card file and remove the eight screws and washers that 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 024-041
 (9)  Remove the fuel system card file.
 TASK 28-22-16-404-013
 3. Fuel System Card File Installation (Fig. 401)
__________________________________
 A. References
 (1)  
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices

 (2)  
AMM 28-16-08/401, Reserve Tank Transfer Single Point Sensor Control Card

 (3)  
AMM 28-22-13/401, Fuel System Management Card

 (4)  
AMM 28-22-14/401, Valve Position Logic Card

 (5)  
AMM 28-22-15/401, Fuel System EICAS Interface Cards Main and Slave

 (6)  
AMM 28-31-15/401, Fuel Jettison Control Card

 (7)  
AMM 28-31-17/401, Fuel Jettison Single Point Sensor Control Card

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