D.
E.
F.
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737-300/400/500MAINTENANCE MANUAL
Access
 (1)  
Location Zones 101/102 Control Cabin 706 Vertical Stabilizer 708 Rudder

 (2)  
Access Panels 9525L Access Door on Fin 9530L Access Door on Fin

References

 (1)  
27-21-00/201, Rudder and Rudder Trim Control System

 (2)  
27-21-61/601, Rudder Aft Quadrant

 (3)
32-00-01/201, Ground Lock AssembliesPrepare for the Installation

 S 864-015

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

 S 214-016

 (2)  
Make sure rig pins R-3 and R-5 are installed as shown (Fig. 402).

 S 214-017

 (3)  
Examine the rudder aft quadrant at the installation points for worn

 areas (Ref 27-21-61/601).Install the Rudder Aft Quadrant (Fig. 401)
 S 424-018
 (1)  
Put the washer and the right bearing housing on the quadrant shaft.

 S 434-019

 (2)  
Install the washer and nut on the right side of the quadrant shaft.

 (a)  
Tighten the nut to 190-280 pound-inches.

 (b)  
Install a cotter pin.

 S 424-020
 (3)  
Put the quadrant on the shaft with the input crank pointed in the left direction.

 S 434-021

 (4)  
Install the bolts, washers and nuts to hold the quadrant to the quadrant shaft.

 (5)  
Put the left bearing housing on the quadrant shaft.

 S 434-023

 (6)  
Install the bolts and washers to hold the two bearing housings to the structure.

 S 424-022
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737-300/400/500MAINTENANCE MANUAL
 (7)  S 824-024Turn the quadrant and make sure the quadrant shaft moves freely in the bearing housings.
 (8)  S 434-025Connect cables RA and RB to the quadrant and install the cable retainers with screws, washers, and nuts.
 (9)  S 434-026Connect cables RA and RB at the turnbuckles.
 S 434-027

 (10)
 Tighten the turnbuckles until the cables are not loose.

 S 434-028

 (11)
 Connect the input rod to the input crank with the bolt, the washers, and the nut.

 S 094-029

 (12)
 Remove rig pin R-3.

 S 824-030

 (13)
 Adjust cables RA and RB to the tension shown in Figure 402.

 (a)  
Make sure rig pins R-3 and R-4 can be easily installed at the same time.

 NOTE: Rig pin R-5 must be installed.
____
 S 094-031
 (14)
 Remove the rig pins and install the turnbuckle locking clips.

 S 864-032

 (15)
 Supply power to the rudder hydraulic systems (Ref 27-21-00/201).

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737-300/400/500MAINTENANCE MANUAL
 S 044-040
 (16) Install the lockout pin for the nose gear steering (Fig. 404) (Ref 32-00-01/201).
 NOTE: It is not necessary to install the lockout pin if the
____ airplane is on jacks and the nose landing gear is fully extended.
 S 864-034
 (17)
 Operate the rudder pedals and examine the rudder for smooth operation and the specified travel (Fig. 403).

 S 864-036

 (18)
 Remove the power from the rudder hydraulic systems (Ref 27-21-00/201).

 S 444-041

 (19)
 Remove the lockout pin from the nose gear steering (Ref 32-00-01/201).

 (20)
 Install the access panels.

 S 414-037
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