27-51-09
 ALL  ú ú 01 Page 415 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 FLAP POWER PACKAGE - ADJUSTMENT/TEST
____________________________________
 1.  General
_______
 A.  There are two tasks in this procedure. The first task is an adjustment of a flap power package. The second task is a test of the flap power package.
 B.  This procedure is usually done after the installation of a flap power package, a flap control assembly, or a flap control module. The torque tubes will not be disconnected unless the flap power package procedure 27-51-09/401 is in work.
 TASK 27-51-09-825-001
 2.  Flap Power Package Adjustment
_____________________________
 A.  Special Tools and Equipment
 (1)  
G12001 Rig Pin Kit

 (2)  
MIT65B04008 Outboard Flap Manual Drive Tool

 (3)  
G27034-1 Inboard Flap Manual Drive Tool

 B.  
Consumable Materials

 (1)  
D00633 Grease - BMS 3-33 (recommended)

 (2)  
D00013 Grease - MIL-G-23827 (alternative)

 (3)  
C00432 Primer - BMS 10-11, Type 1

 (4)  
A00247 Sealant - BMS 5-95

 C.  
References

 (1)  
24-22-00/201, Manual Control

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

 (3)  
32-00-30/201, Landing Gear Door Locks

 (4)  
IPC 27-51-09, Fig. 1 and 3

 D.  
Prepare for the Adjustment

 S 495-002
 (1) Make sure that the landing gear ground locks are installed.
 S 495-003
 WARNING: CAREFULLY DO THE SPECIFIED TASK TO INSTALL THE DOOR LOCKS ON
_______ THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE EQUIPMENT.
 (2)  
Install the door locks on the doors for the body landing gear (Ref 32-00-30/201).

 S 015-004

 (3)
Remove the access plates from the movable flap track fairings.

 E.  
Adjust the Flap Power Package (Fig. 501)

 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-005
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 27-51-09
 ALL  ú ú 01 Page 501 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

TORQUE TUBES 
INPUT LEVER ASSEMBLY 
SEE  A 
INPUT CONTROL ROD INPUT CRANK
SPRING COVER 
RIGGING PIN F-16 

HYDRAULIC MOTOR
ALTERNATE LIMIT SWITCH PACK
COVERPLATE
RVDT POSITION TRANSMITTER
INBOARD FLAP POWER PACKAGE SHOWN
(OUTBOARD FLAP POWER PACKAGE EQUIVALENT)

A

Flap Power Package Adjustment
Figure 501

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 27-51-09
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-006
 (2)  Pressurize hydraulic systems No. 1 and 4 (Ref 29-11-00/201). S 865-041
 WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
 FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP
 CONTROL LEVER.  WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL
 MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP

 CONTROL LEVER.
 (3)  
Put the flap control lever in the 10-unit detent, then put it in the UP detent.

 S 865-008

 (4)  
Release the pressure in hydraulic systems No. 1 and 4 (Ref 29-11-00/201).

 S 015-009

 (5)  
Remove the spring cover from the flap control assembly.

 S 485-010

 (6)  
Put rig pin F-15 or F-16 through the control housing and the crank assembly.

 NOTE: The rig pin must go through the housing walls to accurately
　
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