S 434-020

 (7)  
Install the rudder trim actuator (Ref 27-21-87/401).

 S 094-021

 (8)  
Remove rig pin R-5 from the feel and centering unit.

 H.
Do a Test on the Feel and Centering Unit

 S 044-022
 (1)  Disconnect the steering for the nose landing gear from the rudder system.
 NOTE: It is not necessary to disconnect the steering if the
____ airplane is on jacks and the nose landing gear is fully extended.
 (a)  
Push the knob on the steering depressurization valve.

 (b)  
Put a 3/16-inch rig pin through the hole in the valve housing and the slot in the knob.

 S 864-023
 (2)  
Supply pressure to rudder hydraulic systems A and B
 (Ref 27-21-00/201).

 S 864-024

 (3)  
Operate the rudder pedals through their full travel range three times.

 (4)  
Make sure the rudder trim indicator shows zero units of trim.

 S 214-026

 (5)  
Push the captain's left rudder pedal forward approximately 0.5 inch and release it.

 (a)  
Make sure each side of the rudder trailing edge aligns with the tab on the rudder index plate (Fig. 402).

 (6)  
Do the above step again for the captain's right rudder pedal.

 S 214-025
 S 214-027
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 214-028
 (7)  
Move the captain's left rudder pedal forward until the forward quadrant touches its stop.

 (a)  
Make sure the rudder movement is correct (View A-A, Fig. 402).

 S 214-029
 (8)  
Do the above step again for the captain's right rudder pedal.

 S 214-030

 (9)  
Operate the rudder trim knob until the trim indicator shows 10 |0.25 units of left trim.

 (a)  
Make sure the rudder movement is correct (View A-A, Fig. 402).

 S 214-031
 (10)
 Operate the rudder trim knob until the trim indicator shows 10 |0.25 units of right trim.

 (a)  
Make sure the rudder movement is correct (View A-A, Fig. 402).

 S 214-037
 (11)
 Do this task: Rudder Pedal Forces Test (AMM 27-21-00/501).

 I.
Put the Airplane Back to Its Usual Condition

 S 864-032
 (1)  
Remove the power from the rudder hydraulic systems
 (Ref 27-21-00/201).

 S 094-033

 (2)  
Remove the rig pin from the steering depressurization valve.

 (3)  
Install access panel 9509 and close access door 9513.

 S 414-034
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 RUDDER TRIM ACTUATOR - REMOVAL/INSTALLATION
___________________________________________
 1.  General_______
 A.  This procedure gives the instructions to remove and install the rudder trim actuator.
 TASK 27-21-87-004-001
 2.  Rudder Trim Actuator Removal____________________________
 A.  Special Tools and Equipment
 (1)  F70207-93 Rig Pin Kit:
 --------------------------------------------------------------------| | | DIAMETER | LENGTH | | | REF NO. | F70207-( ) | (INCHES) | (INCHES) | FUNCTION | --------------------------------------------------------------------| R-5 | -11 | 0.309-0.311 | 6.7 -0.25 | RUDDER FEEL AND | | | | | | CENTERING UNIT | --------------------------------------------------------------------
B.  References
 (1)  
27-21-00/201, Rudder and Rudder Trim Control Systems

 C.  
Access

 (1)  
Location Zones
 706 Vertical Fin

 (2)  
　
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