747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 2(71)

 P.O.
 Box 54960, Los Angeles, California 90054 (We recomend this tool, but it is optional)

 C.
References

 (1)
24-22-00/201, Manual Control

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

 (3)
IPC 27-21-01 Fig. 2

 (4)
IPC 27-21-15 Fig. 2

 (5)
IPC 27-28-01 Fig. 1

 (6)
IPC 55-40-01 Fig. 1

 D.
Access

 (1)  
Location Zone 324 Vertical Fin, Rear Spar to Trailing Edge 326 Rudder, Upper

 (2)  
Access Panel
 324FL Inspection Access Panel
 324GL Inspection Access Panel
 324HL Inspection Access Panel
 324KL Inspection Access Panel
 324LL Inspection Access Panel
 324ML Inspection Access Panel
 324UL Inspection Access Panel

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 27-21-01
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A
747-400 MAINTENANCE MANUAL
 E. Prepare to Remove the Upper Rudder
 S 024-046
 (1)  
Do the procedure above to remove the lower rudder.

 S 014-047

 (2)
Remove the access panels on the verticle fin for the upper rudder.

 S 494-048

 (3)  
Attach a lifting pad to each of the four lift points on the rudder (Fig. 401).

 F.
Procedure

 S 024-134
 WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE CLEAR BELOW THE RUDDERS.
_______ OBJECTS CAN FALL AND CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Do these steps to disconnect the power control package (PCP) from the rudder.

 (a)  
Remove the bolt (9) that connects the lower actuator (7) to the upper rudder (11).

 (b)  
Remove the bolt (9) that connects the reaction link for the lower actuator (14) to the upper rudder (11).

 (c)  
Hold the lower actuator and the reaction link.

 (d)  
Remove the bolt (9) that connects the upper actuator (15) to the upper rudder (11).

 (e)  
Hold the upper actuator.

 (f)  
Do these steps to disconnect the center actuator from the upper rudder. 1) Remove the nut (25) from the bolt assembly (24). 2) Remove the bolts (16) (2 locations) and (30). 3) Remove the summing lever support (27). 4) Remove the bolt assembly (24).

 (g)  
Hold the center actuator.

 S 034-117
 (2)  
Remove the bolt (34) to disconnect the control rod of the position transmitter from the upper rudder.

 (a)  
Hold the control rod clear of the rudder.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-01
 ALL  ú ú 01 Page 420 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

VERTICAL FIN
HINGE NO. 11 SEE B
HINGE NO. 10
UPPER RUDDER
UPPER ACTUATOR  SEE  B 
SEE  A  OF THE PCP 
HINGE 
CENTER  SEE  E  NO. 9 
ACTUATOR  SEE  B 
SEE  F  HINGE 
NO. 8 
SEE  J 
LOWER  HINGE 
ACTUATOR  NO. 7 
SEE  C  SEE  I 
RUDDER 
FRONT  HINGE 
SPAR  NO. 6 
POSITION  SEE  H  REACTION LINK 
TRANSMITTER  FOR THE LOWER 
ACTUATOR 
SEE  G 
HINGE  SEE  D 
NO. 5 
SEE  B 
UPPER RUDDER 
BOLT  A  A  1. BOLT 
SLEEVE5.  LARGE2. 
BUSHING  WASHER 
FLANGED 
LOCK6.  BUSHING 
WASHER 

NUT
1
BONDING
JUMPER

A
5. SLEEVE BUSHING
HINGES NO. 5, 9, 10, AND 11
4. SMALL FLANGED WASHER BUSHING
B
2.
LARGE WASHER

3.
 NUT
　
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