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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 ACTUATOR ATTACH FITTING - REMOVAL/INSTALLATION
______________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is one task for the removal and one task for the installation of the actuator attach fittings for the trailing edge flap drive system.
 (1)  
The removal has these parts:

 (a)  
An extension of the flaps.

 (b)  
The installation of the support equipment.

 (c)  
The removal of the actuator attach fitting.

 (2)  
The installation has these parts:

 (a)  
The installation of the support equipment.

 (b)  
A check that the ball screw and the universal joint are aligned.

 (c)  
The installation of the actuator attach fitting.

 (d)  
An adjustment of the ball screw.

 TASK 27-51-46-004-001
 2.  Actuator Attach Fitting Removal_______________________________
 A.  Special Tools and Equipment
 (1)  
2MIT65B81117-1 Ball and Screw Support Tool

 (2)  
24ME65B00116 Inboard TE Flap Lock

 (3)  
23ME65B00116 Outboard TE Flap Lock

 B.  
References

 (1)  
AMM 24-22-00/201, Manual Control

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

 (3)  
OHM 57-52-35, Inboard Trailing Edge Midflap Assembly

 (4)  
OHM 57-52-55, Outboard Trailing Edge Midflap Assembly

 C.  
Access

 (1)  
Location Zone 567 Outboard Flap Track Fairing, Outboard Flap, LH, (Track No. 1) 565 Inboard Flap Track Fairing, Outboard Flap, LH, (Track No. 2) 563 Outboard Flap Track Fairing, Inboard Flap, LH, (Track No. 3) 561 Inboard Flap Track Fairing, Inboard Flap, LH, (Track No. 4) 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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 D. Prepare for the Removal
 S 864-002
 (1)  Do this task to pressurize hydraulic systems No. 1 and 4:
 "Pressurize Hydraulic Systems" (AMM 29-11-00/201).

 S 864-003
 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.
 (2)  
Put the flap control lever in the 30-unit detent to extend the flaps and attach a DO-NOT-MOVE tag.

 S 864-004

 (3)  
Do this task to depressurize hydraulic systems No. 1 and 4:
 "Depressurize Hydraulic Systems" (AMM 29-11-00/201).

 E.
Install the flap lock tools onto the flap track carriages (Fig. 401):

 S 864-005
 (1)  
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 864-006

 (2)  
Move the flaps electrically until the carriage is in the correct position:

 (a)  
FOR THE OUTBOARD FLAPS; the carriage must be approximately 1.95 inches (49.53 mm) forward of the full down position.

 (b)  
FOR THE INBOARD FLAPS; the carriage must be approximately 7.85 inches (199.4 mm) forward of the full down position.

 (3)  
Do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 S 864-007
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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