27-21-12
 RUDDER  ú
 ú 02 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 405Nov 15/98 

A
737-300/400/500MAINTENANCE MANUAL
 S 434-036
 (11) Install the standby actuator to the rudder (AMM 27-21-24/401).
 NOTE: The mounting bracket for the standby actuator on the vertical
____ fin is turned 90 degrees for the graphite rudder installation. The bracket can stay in this position.
 S 824-037
 (12)
 Adjust the vertical fin seals and the balance weight seals (Ref 27-21-11/401).

 S 864-038

 (13)
 Supply hydraulic power for the rudder (Ref 27-21-00/201).

 S 724-039

 (14)
 Do the test of the play in the rudder hinge and the bearing of the power control unit. Also, do a test of the rudder travel (Ref 27-21-00/501).

 (15)
 Install all of the access panels, access doors, and fairings.

 S 414-040
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 27-21-12
 RUDDER  ú
 ú 02 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 406Nov 15/98 

A
737-300/400/500MAINTENANCE MANUAL
 RUDDER INDEX PLATE - REMOVAL/INSTALLATION
_________________________________________
 1.  General_______
 A.  The rudder index plate is installed on the top of the tail cone on the centerline of the airplane. It is used to align the rudder.
 B.  It is best if you install the rudder index plate in the same location as the rudder index plate that you removed. If you do not know where the rudder index plate was before, then use the dimensions shown in Figure 401.
 C.  If the rudder does not trim correctly, refer to AMM 27-09-71/501 to adjust the rudder index plate.
 TASK 27-21-17-004-001
 2.  Rudder Index Plate Removal__________________________
 A.  Access
 (1)  
Location Zones
 704 Tail Cone

 B.  
Procedure (Fig. 401)

 S 934-002
 (1)
Put tape on the airplane adjacent to the rudder index plate.

 (a)  
Accurately make a mark of the position of the rudder index plate on the tape.

 S 024-003
 (2)  Remove the screws and the washers and remove the rudder index plate.
 TASK 27-21-17-404-004
 3.  Rudder Index Plate Installation (Fig. 401)_______________________________
 A.  Access
 (1)  
Location Zones
 704 Tail Cone

 B.  
Procedure

 S 424-007
 (1)  
If there is tape with a mark that shows the correct position, install the rudder index plate:

 (a)  
Put the rudder index plate in its position and align it with the mark.

 (b)  
Install the washers and the screws.

 (c)  
Remove the tape (that has the mark on it) from the airplane.

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 27-21-17
 ALL  ú ú 01 Page 401 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

Rudder Index Plate Installation
Figure 401

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 27-21-17
 ALL  ú ú 02 Page 402 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 424-006
 (2)  
If there is not a mark that shows the correct position, install the rudder index plate:

 (a)  
Put the rudder index plate in the position shown on Figure 401.

 (b)  
Install the washers and the screws.

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