S 864-003

 (2)  
Put the FLT CONTROL HYD POWER - TAIL switches No. 1, 2, 3 and 4 on the overhead panel to the SHUTOFF position.

 S 864-002
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-08
 ALL  ú ú 01 Page 401 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (3)  S 864-005Open these circuit breakers and attach DO-NOT-CLOSE tags: (a) P180 DC Power Distribution Panel 1) 180E7 ELEV/RUD VLV SYS 2 2) 180E22 ELEV/RUD VLV SYS 4 3) 180H8 ELEV/RUD VLV SYS 1 4) 180H23 ELEV/RUD VLV SYS 3
 (4)  S 014-006Open the farthest forward left ceiling panel in the main deck to get access to the rudder forward quadrant (Ref 25-22-01/401).
 (5)  S 494-007Install the rig pin R-3 (Fig. 401).
 (6)  S 014-008Remove the access panel 324FR or 324FL to get access to the feel and centering mechanism.
 (7)  S 494-009Install the rig pin R-4 (Fig. 402).
 (8)  S 014-010Open the access door 312A.
 (9)  S 034-011Loosen the aft turnbuckles to remove the tension in the cables RA and RB.
 S 014-012

 (10)
 Remove the access panel above the drive mechanism for the horizontal stabilizer to get access to the vertical fin.

 (a)  
Get access to the aft quadrant through the opening in the skin above the drive mechanism for the horizontal stabilizer trim.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-08
 ALL  ú ú 01 Page 402 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

RUDDER PEDAL 
RUDDER PEDALS  ADJUSTMENT CRANK 
SEE  A 
CLAMP 
PEDAL ARM 
GROMMET  ASSEMBLY 
RIG PIN R-1 
RB CABLE 
PUSHROD 
(EXAMPLE) 
RUDDER 
FORWARD 
QUADRANT 
RIG 
PIN R-3 
CABIN FLOOR 
INTERCOSTAL 
BUSROD  RA CABLE 
NOSE WHEEL 
STEERING ROD 
RUDDER PEDALS
A 
Rudder Forward Rig Pin Location 
Figure 401 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-08
 ALL  ú ú 01 Page 403 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SEE A
AFT TURNBUCKLES
SUPPORT BRACKET
RIG PIN R-4
INPUT CONTROL ROD
CABLE RETAINER
QUADRANT
CRANK B

FEEL, CENTERINGAND TRIM MECHANISM
A
RUDDER AFT QUADRANT
A B
CABLE RB CABLE RA
A
Rudder Aft Quadrant Installation Figure 402 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-08
 ALL  ú ú 01 Page 404 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

(2 LOCATIONS)
A-A

FEEL AND CENTERING MECHANISM INPUT CRANK
Rudder Aft Quadrant Installation
Figure 402 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-08
 ALL  ú ú 01 Page 405 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 034-035
 (11)
 Disconnect the cables RA and RB from the rudder aft quadrant.
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 2(99)