(2)  
AIPC 27-51-40, Fig. 3

 (3)  
AMM 27-51-04/401, Outboard Flap

 (4)  
AMM 29-11-00/201, Main Hydraulic Supply System

 B.
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) 665 Inboard Flap Track Fairing, Outboard Flap, RH, (Track No. 7)

 667  Outboard Flap Track Fairing, Outboard Flap, RH, (Track No. 8)
 C. Procedure
 S 864-020
 (1)  Do this task to pressurize hydraulic system No. 4: "Hydraulic System Pressurization" (AMM 29-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 864-096
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAP 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 a position to extend the outboard flaps.
 NOTE: Monitor the position of the carriage to find the position
____ where you can remove the bolt from the geneva cam.
 S 864-022
 (3)  
Do this task to depressurize hydraulic system No. 4: "Hydraulic System Depressurization" (AMM 29-11-00/201).

 S 024-107

 (4)  
Remove the midflap assembly (AMM 27-51-04/401).

 S 024-023

 (5)  
Remove the geneva cam (Fig. 401):

 (a)  
Disconnect the pushrod (Section H-H): 1) Remove the bolt (67), washer (68 and 70), and nut (71) from

 the geneva cam. 2) Remove the pushrod (1) from the geneva cam. 3) Remove the washer (69) and the bushing (72) from the geneva
 cam.
 (b)  
Remove the bolt (52), washer (55), and nut (54), that attach the geneva cam to the carriage (Section F-F).

 (c)  
Remove the geneva cam.

 (d)  
Remove the shim washers (51 and 57) and the lubrication washer (56).

 (e)  
Remove the bushing (53) from the geneva cam.

 TASK 27-51-40-004-024
 7. Upstop Fitting Removal
______________________
 A. References
 (1)  
AIPC 27-51-28, Fig. 1

 (2)  
AIPC 27-51-40, Fig. 1

 (3)  
AIPC 27-51-40, Fig. 3

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 B. 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) 665 Inboard Flap Track Fairing, Outboard Flap, RH, (Track No. 7)
 667  Outboard Flap Track Fairing, Outboard Flap, RH, (Track No. 8)
 C. Procedure
 S 014-025
 (1)  
Do this task: "Geneva Cam Removal" (Ref Paragraph 6).

 S 024-026

 (2)  
Remove the upstop fitting (Fig. 401):

 (a)  
Remove the bolt (50), washers (48 and 49), and nut (58) (Section F-F).

 (b)  
Remove the bolt (59), washers (60), and nut (64) (Section G-G).

 (c)  
Remove the roller (62), spacer (63), and lube fitting (61).

 (d)
Remove the support pin bolt (65) and washer (66).

 (e)  
Remove the upstop support fitting (34).

 TASK 27-51-40-004-027
 8. Aft Roller Support Removal
__________________________
 A. References
 (1)  
AIPC 27-51-40, Fig. 1

 (2)  
AIPC 27-51-90, Fig. 3

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System
　
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