TASK 27-51-39-004-018
 6. Geneva Cam Removal
__________________
 A. References
 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AIPC 27-51-39 Fig. 1

 (3)  
AIPC 27-51-39 Fig. 4

 B.
Access

 (1)  
Location Zone 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)
 C. Procedure
 S 864-019
 (1)  Do this task to pressurize hydraulic system No. 1: "Hydraulic System Pressurization" (AMM 29-11-00/201).
 S 864-121
 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 a position to extend the inboard flaps.
 NOTE:  Monitor the position of the carriage to find the position
____ where you can remove the bolt from the geneva cam.
 S 864-021
 (3)  Do this task to depressurize hydraulic system No. 1: "Hydraulic System Depressurization" (AMM 29-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-39
 ALL  ú ú 01 Page 412 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 034-022
 (4)  
Disconnect the pushrod from the geneva cam (Fig. 401):

 (a)  
Remove the bolt (26), washer (27), and nut (11) from the geneva cam (18) (Section D-D).

 (b)  
Remove the pushrod (1) and the washer (9) from the geneva cam.

 (c)  
Remove the bushing (7) from the geneva cam.

 S 024-023
 (5)  
Remove the geneva cam (Section F-F):

 (a)  
Remove the bolt (44), washer (41), and nut (40), that attach the geneva cam to the carriage.

 (b)  
Remove the geneva cam, washers (64) and shim washers (42) from the carriage.

 (c)  
Remove the bushing (43) from the geneva cam.

 TASK 27-51-39-004-024
 7.  Upstop Fitting Removal______________________
 A. References
 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AIPC 27-51-39 Fig. 1

 (3)  
AIPC 27-51-39 Fig. 4

 B.
Access

 (1)  
Location Zone 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)
 C. Procedure
 S 864-025
 (1)  Do this task to pressurize hydraulic system No. 1: "Hydraulic System Pressurization" (AMM 29-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-39
 ALL  ú ú 01 Page 413 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-122
 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 a position to extend the inboard flaps.
 NOTE: Monitor the position of the carriage to find the position
____ where you can remove the bolt from the geneva cam.
 S 864-027
 (3)  
Do this task to depressurize hydraulic system No. 1: "Hydraulic System Depressurization" (AMM 29-11-00/201).

 S 024-028

 (4)  
Remove the upstop fitting (Section E-E, Fig. 401):

 (a)  
　
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