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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (g)  If the power drive unit has more oil than necessary, do the steps that follow: 1) Remove the fill plug with one of the two drain plugs from
 the bottom of the unit to drain the unwanted oil. 2) Install the drain plug. 3) Do steps (c) through (d) again. 4) Install the fill plug and the lockwire.
 S 093-010
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT DO THE STEPS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (5)  
Do this task: "Safety Lock Removal and Leading Edge Flap Activation" (Ref 27-81-00/201).

 S 863-007

 (6)  
Move the ALTN FLAPS EXT/RET switch to RET position.

 S 863-008

 (7)  
Move the ALTN FLAPS EXT/RET switch to OFF position.

 S 863-011

 (8)  
Push the ALTN FLAPS ARM switch to set the flap system in the usual operation.

 (9)  
Do this task: "Electrical Power Removal" (Ref 24-22-00/201).

 S 863-009
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TRAILING EDGE FLAP DRIVE SYSTEM - SERVICING (OIL REPLENISHING)
______________________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is a task to fill the trailing edge flap transmission. There is also a task to fill the trailing edge flap alternate drive motors (if necessary).
 B.  The servicing of the trailing edge flap transmissions has these parts:
 (1)  
The extension of the outboard spoilers.

 (2)  
The extension of the trailing edge flaps

 (3)  
The removal of access panels.

 (4)  
The servicing of the transmissions

 (5)  
The installation of the access panels.

 (6)  
The retraction of the trailing edge flaps.

 (7)  
The retraction of the outboard spoilers.

 TASK 12-13-13-613-001
 2.  Trailing Edge Flap Transmission Servicing_________________________________________
 A.  Special Tools and Equipment
 (1)  
G27032-8 Outboard Spoiler Actuator Lock

 (2)  
G27032-1 Outboard Spoiler Actuator Lock

 B.  Consumable Materials
 (1)  D00070 Oil - Hydraulic, Petroleum Base, MIL-H-5606
 C.  References
 (1)
AMM 06-09-02/201, Body Section 42 Access Doors and Panels

 (2)  
AMM 29-11-00/201, Main Hydraulic Supply System

 D.  Access
 (1)  Location Zone
 (a)  
On the left wing: 561 Inboard Flap Track Fairing, Inboard Flap, LH, (Track No. 4) 563 Outboard Flap Track Fairing, Inboard Flap, LH, (Track No. 3) 565 Inboard Flap Track Fairing, Outboard Flap, LH, (Track No. 2)

 567  Outboard Flap Track Fairing, Outboard Flap, LH, (Track No. 1)

 (b)  
On the right wing: 661 Inboard Flap Track Fairing, Inboard Flap, RH, (Track No. 5) 663 Outboard Flap Track Fairing, Inboard Flap, RH, (Track No. 6) 665 Inboard Flap Track Fairing, Outboard Flap, RH, (Track No. 7)

 667  Outboard Flap Track Fairing, Outboard Flap, RH, (Track No. 8)
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 301 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (c)  
Access Panel
 572BB // Trailing Edge Lower
 572FB // Trailing Edge Lower
 672BB // Trailing Edge Lower
 672FB // Trailing Edge Lower

 (d)  
Location Zone
 585 // Spoiler No. 1
 584 // Spoiler No. 2
 583 // Spoiler No. 3
　
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