(5)  
This task is a manual pressure refuel operation. The FQPU does not control the fuel load distribution during a manual pressure refuel operation. You must monitor the fuel distribution to prevent an out of limits center of gravity (CG) or lateral imbalance condition.

 B. References
 (1)  
AMM 12-11-01/301, Fuel Servicing

 (2)  
AMM 12-11-03/301, Manual Pressure Refuel

 (3)  
AMM 28-21-00/201, Refuel

 (4)  
AMM 28-26-00/201, Defuel

 C. Access
 (1)  
Location Zones
 500 Left Wing
 600 Right Wing

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

 D. Prepare the Airplane
 S 653-018
 WARNING: OBEY ALL THE FUEL SERVICING AND MANUAL PRESSURE REFUEL
_______ PRECAUTIONS IN AMM 12-11-01/301. FAILURE TO OBEY THE 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).

 S 653-019

 (2)  
Do this task: Prepare the Airplane for a Refuel Operation
 (AMM 12-11-01/301).

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747-400 MAINTENANCE MANUAL
 S 653-020
 (3)  Do one of these procedures to refuel the airplane with a blank fuel quantity indicator (blank gage):
 (a)  
Fuel Transfer Method

 (b)  
Fuel Truck Flow Meter Method

 (c)  
Fuel Measuring Sticks Method

 E. Fuel Transfer Method
 S 653-021
 (1)  Transfer fuel from the tank with a blank gage:
 (a)  
Make sure the refuel valve(s) in the tank with a blank gage are closed.

 (b)  
Make sure the receiving tank(s) have enough fuel capacity to accept all of the fuel from the tank with a blank gage.

 (c)  
Transfer all of the fuel from the tank with a blank gage (AMM 28-26-00/201).

 (d)  
Continue the fuel transfer until the fuel pump low pressure lights come on.

 S 653-022
 (2)  Calculate the supply tank fuel to remain (Table 301):
 (a)  
Make a decision about which fuel tank will supply the transfer fuel.

 (b)  
Record the INITIAL supply tank fuel quantity, BLOCK A.

 (c)  
Use the fuel sheet to find the fuel requirement for the tank with a blank gage.

 NOTE: This is the fuel quantity that will be transferred from
____
 the supply tank.

 (d)  
Record the TRANSFER fuel quantity, BLOCK B.

 (e)  
Calculate the fuel quantity that will remain in the supply tank after the fuel transfer operation.

 NOTE: Subtract the transfer fuel quantity (B) from the initial
____ supply tank fuel quantity (A) to get the final supply tank fuel quantity (C). BLOCK C is the fuel quantity that will remain in the supply tank after the fuel transfer is complete. When the supply tank fuel quantity decreases to this value, stop the fuel transfer operation.
 (f)  Record the FINAL fuel quantity for the supply tank, BLOCK C.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 305 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 ~................................................................. | SUPPLY TANK TRANSFER (FUEL TO REMAIN) | (LBS/KGS) | ................................................................... | Initial Supply Tank Fuel Quantity | INITIAL |A: | ................................................................... |- Transfer Fuel Quantity *[1] |- TRANSFER |B: | ................................................................... |= Final Supply Tank Fuel Quantity *[2]|= FINAL |C: | 2......................................…...........…..............1 *[1] Fuel quantity required for the tank with a blank gage (per
　
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