(2)  
Access Panel
 1103 Left Forward Access Door

 F.
Prepare for the Installation

 S 864-017
 (1)  
Remove all hydraulic power from the rudder system (AMM 27-21-00/201).

 S 214-018

 (2)  
Make sure that rig pin R-5 is installed in the output crank of the feel and centering unit (Fig. 402).

 G.
Install the Rudder Forward Quadrant

 S 434-019
 (1)  
Put the jackshaft assembly into its position and move the top end of the jackshaft assembly into the top bearing (Fig. 401).

 S 434-020

 (2)  
Attach the jackshaft support channel to the structure, and tighten the bolts.

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A

737-300/400/500
MAINTENANCE MANUAL

STANDBYAFT CONTROL RUDDERMECHANISM
ACTUATOR
SEE A

STANDBY INPUT ROD
EXTERNAL SUMMING LEVER RIG PIN NO. 5
INPUT LINK TORQUE TUBE
INPUT CRANK
TRIM AND FEEL ROD

RUDDER POWER CONTROL UNIT
VERNIER CONTROL ROD
CONTROL ROD
FEEL AND CENTERING
AFT QUADRANT MECHANISM CRANK
LOWER CRANK (BELLCRANK)
FEEL AND CENTERING MECHANISM
FWD
CABLE
RB

CABLE
RA

AFT CONTROL MECHANISM
A

TABLE I RIGGING LOAD FORTEMPERATURE CABLES RA AND RB`F (|5`) (+10/-10 LBS)
110
168 90
159 70
150 50
142 30
134 10
125 -10
117 -30
109 -40
103
Rudder Aft Control Mechanism Adjustment
Figure 402

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A 737-300/400/500MAINTENANCE MANUAL
 S 434-021

 (3)  At the right forward quadrant and jackshaft assembly, do these
 steps:
 (a)  Install the rudder pedal position sensor quadrant to the bottom
 of the jackshaft assembly (AMM 31-24-42/401).
 (b)  Connect the cables for the position sensor (AMM 31-24-42/401).
 (c)  Install a lockwire on the screws.
 S 434-022
 (4)  At the left forward quadrant and jackshaft assembly, do these steps:
 (a)  Attach the rudder pedal steering arm to the bottom of the
 assembly.
 (b)  Install the lockwire and cotter pin.
 S 494-023
 (5)  Install rig pins R-3 and R-4 in the forward rig pin holes of each
 quadrant.
 S 434-025
 (6)  Connect the busrod for the forward quadrants with the bolt, spacers,
 washers, nut, and cotter pin.
 NOTE:____ If it is necessary, adjust the busrod until rig pins R-3 and
 R-4 move freely.

 S 224-026
 (7)  Make sure the clearance between the cable guard block and the quadrant is 0.03 to 0.05 inch (Fig. 401).
 NOTE: Add or remove shims to adjust the clearance if it is
____ necessary.
 S 094-027
 (8)  
Remove rig pins R-3 and R-4.

 S 984-028

 (9)  
Move the captain's forward quadrant until you can easily install rig pin R-3 in the aft rig pin hole in the quadrant.

 S 224-029

 (10)
 Make sure the maximum clearance between the captain's forward quadrant and the quadrant stop is 0.06 inch.

 NOTE: Add or remove shims if it is necessary to adjust the
____ clearance.
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A
737-300/400/500MAINTENANCE MANUAL
 S 094-030
　
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