27-21-51
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A

737-300/400/500MAINTENANCE MANUAL
RUDDER
PEDAL 
SEE  A  RUDDER  ADJUSTMENT 
PEDAL  CRANK 
(4 LOCATIONS)  (2 LOCATIONS) 

PEDAL 
ARM  RUDDER FORWARD 
(4 LOCATIONS)  QUADRANT 
PUSHROD  (2 LOCATIONS) 
(4 LOCATIONS) 

BUS ROD FWD
YOKE (2 LOCATIONS)
JACKSHAFT ASSEMBLY (2 LOCATIONS)
A
Rudder and Rudder Trim Control System - Rudder Pedals and
Forward Quadrants
Figure 601

M13997
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737-300/400/500MAINTENANCE MANUAL
 RUDDER AFT QUADRANT - REMOVAL/INSTALLATION
__________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task removes the aft control quadrant for the rudder. The second task installs the aft control quadrant.
 TASK 27-21-61-014-001
 2.  Rudder Aft Quadrant Removal___________________________
 A.  Special Tools and Equipment
 (1)  Rig Pin Kit - F70207-93:
 ---------------------------------------------------------------------| | | DIAMETER | LENGTH | | | REF NO. | F70207-( ) | (INCHES) | (INCHES) | FUNCTION | ---------------------------------------------------------------------| R-3 | -11 | 0.309-0.311 | 6.7 -0.25 | CAPTAINS FORWARD | | | | | | QUADRANT | | R-5 | -11 | 0.309-0.311 | 6.7 -0.25 | FEEL AND | | | | | | CENTERING UNIT | ---------------------------------------------------------------------
B.  References
 (1)  
27-21-00/201, Rudder and Rudder Trim Control System

 C.  
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

 D.  
Prepare for the Removal

 S 864-002
 (1)  
Remove the power from the rudder hydraulic systems
 (Ref 27-21-00/201).

 S 494-003

 (2)  
Install rig pins R-3 and R-5 as shown (Fig. 402).

 E.  
Remove the Rudder Aft Quadrant (Fig. 401)

 (1)  
Loosen cables RA and RB at the turnbuckles.

 S 034-005

 (2)  
Remove the cable retainers to disconnect the cables from the rudder aft quadrant.

 S 034-004
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 27-21-61
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A
737-300/400/500MAINTENANCE MANUAL
BEARING
HOUSING

STRUCTURE
TURNBUCKLES
A  A 
INPUT  CABLE  INPUT 
CRANK  RETAINER  ROD 

AFT CONTROL QUADRANT
SEE A
QUADRANT
CABLE QUADRANT
RB
SHAFT RA
CABLE
FWD
AFT CONTROL QUADRANT
COTTER PINNUT
A
WASHERWASHER
BOLT (4 LOCATIONS) WASHER 1
A-A
1
MAKE SURE THE COUNTERSUNK SIDE OF THE WASHER IS INBOARD
Rudder Aft Control Quadrant Installation Figure 401
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 27-21-61
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FORWARD
QUADRANT

SEE A
737-300/400/500MAINTENANCE MANUAL
RUDDER
CONTROL
CABLES

RA RB
RIG PIN R-3 (R-4 ON THE FIRST OFFICER'S SIDE)
　
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