27-51-39
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A
747-400 MAINTENANCE MANUAL
 (b)  
Install the bushing in the geneva cam (18).

 (c)  
Make sure the dimension of the geneva cam is correct for the installation (Detail F).

 (d)  
Put the geneva cam (18) on the main carriage.

 (e)  
Install the bolt (44) through the washers (45 and 64), the carriage and the bushing.

 (f)  
Adjust the shim washers (42) as necessary get the clearance shown in Section F-F.

 (g)  
Install the washer (41) and the nut (40) on the bolt.

 (h)  
Tighten the nut to 480-600 pound-inches (54-68 N-m).

 (i)  
Install the cotter pin.

 S 434-118
 CAUTION:_______MAKE SURE THAT THE ENDS OF THE SPRINGS ARE FREE TO TURN. THE SPRINGS CAN BE DAMAGED IF THE ENDS CANNOT TURN.
 (3)  
If it is necessary, install the springs (20) on the geneva cam as shown in Section H-H:

 (a)  
Install the bushing (59) in the springs (20) and install the flanged bushings (55) in bushings (50).

 (b)  
Install the bolt (56) through the flanged bushing and the spring support (63).

 (c)  
Install the washer (61) and the nut (62) on the bolt.

 (d)  
Install the screw (58) through the bushing (59), the flanged bushings (55), and the spacer (60).

 (e)  
Install the washer (61) and the nut (62).

 (f)  
Tighten the nuts (62) to 480-600 pound-inches (54-68 N-m).

 (g)  
Install the cotter pins.

 S 434-070
 (4)
Connect the pushrod (1) to the geneva cam (Section D-D):

 (a)  
Install the bushing (7) in the geneva cam.

 (b)  
Put the pushrod (1) in the geneva cam and install the washer

 (9)
 between the rod end and the bushing.

 (c)  
Attach the pushrod with a bolt (26), a washer (27), and a nut (11).

 (d)  
Tighten the nut to 120 pound-inches (14 N-m).

 TASK 27-51-39-404-071
 14. Midflap Crank Attach Fitting Installation_________________________________________
 A. Consumable Materials
 (1)  A00247 Sealant - Chromate, BMS 5-95
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 27-51-39
 ALL  ú ú 01 Page 429 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 B. Parts
 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 6 | Midflap Fitting (Track No. 3) | 27-51-39 | 04 | 450 | | | | Midflap Fitting (Track No. 4) | | 01 | 435 | | | | Midflap Fitting (Track No. 5) | | | 440 | | | | Midflap Fitting (Track No. 6) | | 04 | 455 | | | 64 | Washer | | 01 | 415 | | | 65 | Bolt | | | 400 | | | 66 | Washer | | | 410 | | | 67 | Shoe (Spacer) | | | 430 | | | 68 | Shim | | | 420 | | | 69 | Washer | | | 405 | | | 70 | Spacer | | | 425 | | | 71 | Washer | | 04 | 430 | | | 72 | Bolt | | | 425 | | | 73 | Washer | | | 435 | | | 74 | Shoe (Spacer) | | | 445 | | | 75 | Shim | | | 440 | | | 76 | Bolt | | | 405 | | | 77 | Washer | | | 410 | | | 78 | Spacer | | | 420 | | | 79 | Washer (Shim) | | | 415 | 2......…........…...................................…..........….....….........1
 C. 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)
 D. Procedure
 S 434-072
 (1)  
Make sure the aftflap is attached to the midflap.

 S 424-073

 (2)  
Install the midflap crank attach fitting (Detail E, Fig. 401):

 (a)  
Apply the sealant BMS 5-95 to the threads of the nutplates on the attach fitting (6).

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