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 the fuel sheet).
 *[2] Fuel quantity to remain in the supply tank after fuel transfer.
 S 653-023
 (3)  Prepare the tank with a blank gage:
 (a)  Do one of these procedures to open the refuel valve(s) for the tank with a blank gage: 1) Manually open the tank refuel valve (AMM 28-21-00/201). 2) Override the VTO system:
 a)  Put the VTO switch to the override position (AMM 28-21-00/201). b) Put the applicable refuel valve switch (P42 panel) in the OPEN position.
 S 653-024
 (4)  Transfer a known quantity of fuel into the tank with a blank gage:
 (a)  Transfer fuel from the supply tank into the tank with a blank gage (AMM 28-26-00/201).
 WARNING: THERE IS NO AUTOMATIC SHUTOFF DURING A REFUEL OPERATION
_______ WHEN THE VTO OVERRIDE SWITCH IS ACTIVATED. THERE IS NO AUTOMATIC SHUTOFF OR OVERFILL PROTECTION WHEN THE REFUEL VALVES ARE MANUALLY OPENED. WITHOUT AUTO SHUTOFF OR OVERFILL PROTECTION A FUEL SPILL CAN OCCUR. A FUEL SPILL CAN CAUSE A FIRE OR AN EXPLOSION.
 (b)  
Monitor the fuel quantity decrease from the supply tank.

 (c)  
Stop the transfer at the final fuel quantity, BLOCK C.

 (d)  
Put the refuel valve in the CLOSED position (if opened).

 (e)  
Use the measuring sticks to verify the actual fuel quantity in the tank with the blank gage.

 (f)  
Record the fuel quantity on the fuel sheet.

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747-400 MAINTENANCE MANUAL
 S 653-025
 (5)  Do the applicable task:
 (a)  
Put the VTO Switch to the Usual Position (AMM 28-21-00/201).

 (b)  
Manually Close the Refuel Valve (AMM 28-21-00/201).

 S 653-026
 (6)  Do this task: Manual Pressure Refueling (AMM 12-11-03/301).
 NOTE: Refuel the remaining fuel tanks per fuel sheet requirements.
____ Make sure the refuel valve(s) for the tank with a blank gage remain closed.
 F. Fuel Truck Flow Meter Method
 S 653-027
 (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 653-028
 (2) Calculate the upload fuel quantity for the tank with a blank gage:
 (a)  
Record the fuel sheet upload fuel quantity in LBS (KGS), BLOCK A.

 (b)  
Record the current station DENSITY, BLOCK B.

 (c)  
Convert the fuel sheet upload fuel quantity in lbs (kgs) into gallons (liters) by dividing lbs (kgs) by the current station density.

 (d)  
Record the target upload fuel quantity in GALLONS (LITERS), BLOCK C.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 307 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 ~...................................................................... | UPLOAD FUEL QUANTITY | ........................................................................ | Upload Fuel Quantity lbs (kgs) *[1] | LBS |A: | | | (KGS) | | ........................................................................ |/ Current Station Density |/ DENSITY |B: | ........................................................................ |= Targit Quantity, gallons (liters) |= GALLONS |C: | | | (LITERS) | | 2.............................................…...........…............1 *[1] Fuel quantity required for the tank with a blank gage (per
 the fuel sheet).
 S 653-029
 (3)  Prepare the tank with a blank gage:
 (a)  Do one of these procedures to open the refuel valve: 1) Manually open the tank refuel valve (AMM 28-21-00/201). 2) Override the VTO system:
　
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