TASK 28-21-00-902-041
 3. Manually Close the Refuel Valve (Fig. 201)
_______________________________
 A. General
 (1)  
Do this task after you refuel an airplane with a manually opened refuel valve.

 (2)  
You must close the refuel valve when you complete the refuel operation.

 B.
References

 (1)  
AMM 27-51-00/201, Trailing Edge Flap System

 (2)  
AMM 28-26-00/201, Defuel

 (3)  
AMM 32-00-30/201, Wing and Body Gear Door Locks

 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
 571AB Trailing Edge Lower Access Panel
 572GB Trailing Edge Lower Access Panel
 581EB Flap Drive Access Panel
 591AB Outbd Aileron Access Panel
 671AB Trailing Edge Lower Access Panel
 672GB Trailing Edge Lower Access Panel
 681EB Flap Drive Access Panel
 691AB Outbd Aileron Access Panel

 D.
Manually Close the Refuel Valve

 (1)  
Go to the open refuel valve control unit.

 S 912-012

 (2)  
Turn the override screw 10 to 13 turns in the clockwise direction to close the valve (View A).

 S 912-011
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (3)  S 912-013Install the lockwire on the override screw (knurled knob).
 (4)  S 412-015Install the applicable access door or panel that was opened to get access to the refuel valve control unit.
 NOTE:____ Refer to the subsequent table for access data.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 ~................................................................. | LOCATION | ACCESS DOOR/PANEL | ................................................................... |No. 1 Main Tank | 581EB | ................................................................... |No. 2 Main Tank . Inboard | 571AB | ................................................................... |No. 2 Main Tank . Outboard | 572GB | ................................................................... |No. 3 Main Tank . Inboard | 671AB | ................................................................... |No. 3 Main Tank . Outboard | 672GB | ................................................................... |No. 4 Main Tank | 681EB | ................................................................... |No. 2 Reserve Tank | 591AB | ................................................................... |No. 3 Reserve Tank | 691AB | 2.................................…...............................1
 S 482-016
 WARNING: MAKE SURE THAT PERSONS AND THE EQUIPMENT ARE CLEAR BEFORE
_______ YOU. MOVE THE FLAP CONTROL LEVER. THE LEADING EDGE FLAPS, THE TRAILING EDGE FLAPS AND THE FLAP DRIVE MECHANISMS WILL MOVE. WITH HYDRAULIC POWER REMOVED, ELECTRICAL POWER WILL MOVE THE FLAPS AUTOMATICALLY WHEN YOU MOVE THE FLAP CONTROL LEVER.
 (5)  
Do the activation procedure for the leading edge flaps (if deactivated) (AMM 27-81-00/201).

 S 482-017

 (6)  
Do the activation procedure for the trailing edge flaps (if deactivated) (AMM 27-51-00/201).

 S 482-018

 (7)  
Remove the wing and body gear door locks (AMM 32-00-30/201) (if installed).

 (8)  
Remove the tail support equipment (AMM 07-11-08/201) (if installed).

 S 482-019
 TASK 28-21-00-902-046
 4. Put the VTO Switch to the Override Position (Fig. 202)
___________________________________________
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