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A
747-400
MAINTENANCE MANUAL

SEE A
1. INPUT ROD TO THE UPPER RUDDER
B  RATIO CHANGER
B
6. INPUT  2. RUDDER TRIM CONTROL ACTUATOR ROD
3. CRANK ASSEMBLY
RIG PIN R-4
C
5. RUDDER AFT  SEE B
A
QUADRANT
4. FEEL, CENTERING AND TRIM
C
MECHANISM
A
CABLE RB
CABLE RA
A
TOP
ADJUSTABLE
STOP

TRAILING EDGE OF
THE LOWER RUDDER OUTPUT CRANK OF THE FEEL, CENTERING
0.12 INCH AND TRIM
(WIDTH OFRUDDER INDEX GROOVE)MECHANISM INDEX TAB
BOTTOM
ADJUSTABLE

0.24 INCH
RUDDER
STOP (WIDTH OF
INDEX PLATE
INDEX TAB)
B-B LOWER RUDDER ALIGNED WITH THE INDEX TAB (VIEW FROM THE REAR)
A-A
Rudder Feel, Centering and Trim Mechanism Installation
Figure 401 (Sheet 1)

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 27-21-11
 ALL  ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

1. INPUT ROD TO THE UPPER RUDDER RATIO CHANGER
10. BOLT 
11. WASHER 
6. INPUT CONTROL  9. NUT 7. BOLT 8. WASHER  12. NUT 13. WASHER 14. NUT  15. OUTPUT CONTROL OVERRIDE MECHANISM ROD TO THE ROLLOUT 
ROD 

29. INPUT CRANK
3. CRANK ASSEMBLY
28. OUTPUT CRANK
16. TENSION SPRING
40.
 BOLT

41.
 WASHER  17. TENSION

42.
 WASHER  SPRING

43.
 WASHER

44.
 NUT

18.
 BOLT

19.
 WASHER

20.
 NUT (2 LOCATIONS)

21.
 EYEBOLT (2 LOCATIONS)

22.
 BUSHING

27. RETAINER  (2 LOCATIONS)
(2 LOCATIONS) 1
26. RETAINER  23. COMPRESSION (2 LOCATIONS) SPRING (2 LOCATIONS)
24.
 NUT (2 LOCATIONS)

25.
 INPUT ROD TO THE LOWER RUDDER RATIO CHANGER

NOTE: RUDDER TRIM ACTUATOR OMITTED FOR CLARITY
B
1
0.005-0.030 INCH CLEARANCE NECESSARY WITH THE CAM IN THE DETENT
Rudder Feel, Centering and Trim Mechanism Installation
Figure 401 (Sheet 2)

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747-400 MAINTENANCE MANUAL
3. CRANK 29. INPUT 28. OUTPUT ASSEMBLY CRANK

SUPPORT STRUCTURE
FEEL, CENTERING AND TRIM MECHANISM AFTER THE INSTALLATION
C-C

Rudder Feel, Centering and Trim Mechanism Installation
Figure 401 (Sheet 3)

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747-400 MAINTENANCE MANUAL
 (b)  
P7, Overhead Circuit Breaker Panel
 1) 7D7, FLT CONT CMPTR SERVO L
 2) 7D8, FLT CONT CMPTR PWR L
 3) 7D12, FLT CONT CMPTR SERVO C
 4) 7D13, FLT CONT CMPTR PWR C
 5) 7D14, FLT CONT CMPTR SERVO R
 6) 7D15, FLT CONT CMPTR PWR R

 (c)  
P180, DC Power Distribution Panel
 1) 180H8, ELEV/RUD VLV SYS 1
 2) 180E7, ELEV/RUD VLV SYS 2
 3) 180H23, ELEV/RUD VLV SYS 3
 4) 180E22, ELEV/RUD VLV SYS 4

 S 014-006
 (4)  
Remove the access panels 324FR and 324FL to get access to the feel, centering and trim mechanism.
　
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