(d)
Put the refuel valve switch 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 upload fuel quantity on the fuel sheet.
S 653-031
(5) Do the applicable task:
(a) Manually Close the Refuel Valve (AMM 28-21-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
12-11-06
ALL ú ú 01 Page 308 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b) Put the VTO Switch to the Usual Position (AMM 28-21-00/201).
S 653-032
(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.
G. Fuel Measuring Sticks Method
S 653-033
(1) Calculate the upload fuel quantity for the tank with a blank gage:
(a) Use the fuel measuring sticks to obtain stick readings for the tank with the blank gage.
NOTE: If the fuel quantity is below the minimum stick reading,
____ do the fuel transfer or fuel truck flow meter method to refuel the tank. You can also transfer enough fuel into the tank with the blank gage to obtain a stick reading (AMM 28-26-00/201).
(b)
Use the dripstick conversion chart in the fuel measuring stick manual to convert the stick units to lbs (kgs) to calculate how much fuel remains in the tank.
(c)
Record the quantity of fuel in the tank lbs (kgs).
(d)
Use the fuel sheet to find the total fuel required in the tank.
(e)
Subtract the quantity of fuel currently in the tank from the total fuel requirement.
NOTE: This is the fuel quantity that needs to be uploaded into
____
the tank.
(f)
Record the upload fuel quantity lbs (kgs).
(g)
Convert the necessary upload fuel quantity in lbs (kgs) into gallons (liters) by dividing lbs (kgs) by the current station density.
(h)
Record the target upload fuel quantity in gallons (liters).
S 653-034
(2) 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:
a) Put the VTO switch to the override position (AMM 28-21-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
12-11-06
ALL ú ú 01 Page 309 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
b) Put the applicable refuel valve switch to the OPEN position.
(3) S 653-035Upload a known quantity of fuel into the tank with a blank gage: (a) Upload fuel from the fuel service equipment into the tank with a blank gage (AMM 12-11-03/301).
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) (c) (d) (e) (f) Monitor the fuel flow meter.Stop the upload at the target fuel quantity.Put the refuel valve switch to the CLOSED position (if opened).Use the measuring sticks to verify the actual fuel quantity in the tank with the blank gage.Record the upload fuel quantity on the fuel sheet.
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 SERVICING 1(27)
