(18)
 If the airplane battery power was used, set the BATTERY switch to the OFF position.

 G. Put the Airplane Back to the Usual Condition
 S 413-038
 (1)  Close and latch these doors (if opened):
 (a)  
Fueling station access door, 521BB and 621BB

 (b)  
Fueling control panel access door, 521CB.

 S 083-039
 (2)  Do these steps in this sequence to remove the bonding/grounding cables (AMM 20-41-01/201):
 (a)  
Disconnect the bonding cable from the airplane to the fuel source.

 (b)  
Disconnect the grounding cable from the earth ground to the fuel source.

 (c)  
Disconnect the grounding cable from the airplane to the earth ground.

 S 653-040
 (3) Do the operator supplied procedures to remove the fuel vehicle.
 S 083-041
 WARNING: DO THE PROCEDURE IN AMM 27-81-00/201 TO REACTIVATE THE EXTENDED
_______ LEADING EDGE FLAPS. THE FLAPS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  Do this task for extended leading edge flaps: Safety Locks Removal and Extended Leading Edge Activation (AMM 27-81-00/201).
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A
747-400 MAINTENANCE MANUAL
 S 083-042
 (5) Remove the tail support equipment (AMM 07-11-08/201) (if installed).
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A
747-400 MAINTENANCE MANUAL
 CENTER WING TANK REFUEL - SERVICING
___________________________________
 1. General
_______
 A. This procedure contains this task:
 (1)  Center Wing Tank Preselect Pressure Refueling
 B. Center Wing Tank Preselect Pressure
 (1)  
Center wing tank (CWT) preselect pressure refueling uses the fuel quantity processor unit (FQPU) to control the fuel into the CWT.

 (2)  
When you use the CTR PRESELECT controls, only the CWT is refueled. The preselected fuel quantity will be added to CWT and then the FQPU will command the CWT refuel valves to the closed position.

 TASK 12-11-05-603-001
 2. Center Wing Tank Preselect Pressure Refueling
_____________________________________________
 A. General
 (1)  This task uses the automatic pressure refuel system to refuel the CWT.
 B. References
 (1)  
AMM 12-11-01/301, Fuel Servicing

 (2)  
AMM 20-41-01/201, Static Grounding

 (3)  
AMM 28-26-00/201, Defuel

 C. Access
 (1)  
Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right
 521 Leading Edge to Front Spar, Left
 621 Leading Edge to Front Spar, Right

 (2)  
Access Panels
 521BB Fueling Station Access Door
 521CB Fueling Control Panel Access Door
 621BB Fueling Station Access Door

 D. Prepare the Airplane for a Refuel Operation
 S 653-002
 WARNING: OBEY ALL THE REFUEL OPERATIONS PRECAUTIONS IN AMM 12-11-01/301.
_______ FAILURE TO OBEY THE REFUEL PRECAUTIONS CAN CAUSE SERIOUS INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  Read and obey the precautions in this task: Precautions and Limits for Fuel Servicing (AMM 12-11-01/301).
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 ALL  ú ú 01 Page 301 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 653-003
 (2)  Do this task: Prepare the Airplane for a Refuel Operation
　
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