S 714-018

 (10)
 Set the applicable nozzle valve switch on the fuel jettison module to the open position (the transit light on the switch is on, followed by the word ON).

 S 864-036

 (11)
 Make sure the manual override lever for the valve actuator moves to the OPEN position.

 S 714-019

 (12)
 Push the applicable jettison nozzle valve switch to the closed position (word ON is off).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-31-05
 ALL  ú ú 02 Page 409 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-039
 (13)
 Make sure the manual override lever for the valve actuator moves to the CLOSED position.

 D.
Put the Airplane Back to Its Usual Condition.

 S 414-020
 (1)  
Install the access door, 556AB or 656AB.

 S 414-052

 (2)  
Close access door 521CB if access to the refuel control panel, P42, is not needed.

 S 864-047
 WARNING:_______DO THE PROCEDURE IN AMM 27-81-00/201 TO REMOVE THE LOCKS. THE FLAPS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  Remove the leading edge flap safety locks, if installed
 (AMM 27-81-00/201).

 S 864-048
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
_______ EDGE AND TRAILING EDGE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
 (4)
Retract the leading edge flaps, if extended (AMM 27-81-00/201).

 S 864-023

 (5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
On the left power distribution center, P414:
 1) 414C5, FUEL OVRD/JTSN PUMP FWD 3
 2) 414C2, FUEL OVRD/JTSN PUMP FWD 2
 3) 414D2, OVRD/JTSN PUMP CTR L

 (b)  
On the right power distribution center, P415: 1) 415A38, FUEL OVRD/JTSN PUMP AFT 2 2) 415B38, FUEL OVRD/JTSN PUMP AFT 3 3) 415M32, OVRD/JTSN PUMP CTR R

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-31-05
 ALL  ú ú 01 Page 410 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 FUEL JETTISON TRANSFER VALVE BODY - REMOVAL/INSTALLATION
________________________________________________________
 1.  General_______
 A.  This procedure contains instructions to remove and install the valve body of a fuel jettison transfer valve. There are different tasks for the valve bodies in the center wing tank and the inboard main tank.
 B.  The fuel jettison transfer valve body is referred to as the valve body in this procedure. The valve bodies are installed on the rear spar in the center wing tank and each inboard main tank.
 C.  Access to the valve bodies in the center wing tank is through the center wing tank access door and through spanwise beam access doors. Access to the valve bodies in the inboard main tanks is through the fuel tank access door 544AB or 644AB.
 TASK 28-31-06-004-001
 2.  Jettison Transfer Valve Body in the Center Wing Tank Removal (Fig. 401)____________________________________________________________
 A.  References
 (1)
AIPC 28-31-06 Fig. 5

 (2)
AMM 28-11-00/201, Fuel Tanks

 (3)
AMM 28-11-09/401, Spanwise Beam Access Door

 (4)
AMM 28-26-00/201, Defueling

 (5)
AMM 28-31-04/401, Fuel Jettison Transfer Valve Actuator

 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
 132AZ Spanwise Beam Access Door
 132BZ Spanwise Beam Access Door
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 燃油 FUEL 4(53)