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which provides input to the rudder feel and centering unit,
torque tube, and input rods for the main and standby rudder
PCUs.
Rudder Feel and Centering Unit
The feel and centering unit provides feel forces to the rudder
pedals.
During electric trim operation, the pilots move the rudder trim
control on the aisle stand which sends a signal to the rudder
trim actuator. The rudder trim actuator moves the rudder feel
and centering unit. This moves the rudder torque tube and the
main and standby rudder PCU input rods and it backdrives the
rudder pedals to the new commanded position. The trim
actuator movement also creates a new neutral position for the
feel and centering unit.
Main Rudder Power Control Unit
The main rudder PCU piston moves and controls the rudder
position.
Standby Rudder Power Control Unit
When the standby rudder system is operated, the standby
rudder PCU piston moves and controls the rudder position.
Rudder
The rudder attaches to the trailing edge of the vertical stabilizer
and moves left or right to control yaw.
RUDDER AND RUDDER TRIM CONTROL SYSTEM - GENERAL DESCRIPTION 2
EFFECTIVITY
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RUDDER AND RUDDER TRIM CONTROL SYSTEM - GENERAL DESCRIPTION 2
RUDDER AND RUDDER TRIM CONTROL SYSTEM - GENERAL DESCRIPTION 2
EFFECTIVITY
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General
The rudder components are in these three locations:
* Flight compartment
* Forward equipment compartment
* Vertical stabilizer.
Flight Compartment Components
The flight compartment has these rudder components:
* Rudder pedals (4)
* Rudder Trim control knob and rudder trim indicator on the
aileron/rudder trim panel.
Lower Nose Compartment Components
The lower nose compartment has these rudder components:
* Rudder forward quadrant (2)
* Control rods (4)
* Bus rod.
Vertical Stabilizer
The vertical stabilizer has these rudder components:
* Rudder aft quadrant
* Rudder pedal force transducer
* Rudder torque tube
* Rudder feel and centering unit
* Rudder trim actuator
* Main rudder PCU
* Standby rudder PCU
* Rudder
* Rudder position transmitter.
RUDDER AND RUDDER TRIM CONTROL SYSTEM - COMPONENT LOCATIONS
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-003
RUDDER AND RUDDER TRIM CONTROL SYSTEM - COMPONENT LOCATIONS
RUDDER AND RUDDER TRIM CONTROL SYSTEM - COMPONENT LOCATIONS
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-003
RUDDER AND RUDDER TRIM CONTROL SYSTEM - COMPONENT LOCATIONS
RUDDER AND RUDDER TRIM CONTROL SYSTEM - COMPONENT LOCATIONS
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-003
Purpose
The pilots use the rudder pedals to command a yaw control
through the rudder forward quadrants.
Location
The rudder pedals are in the flight compartment. The rudder
pedal support and forward quadrant assemblies are in the
forward equipment compartment.
Physical Description
Each pedal assembly has these components:
* Pedals (2)
* Pedal arm (2)
* Pushrods (2)
* Yoke
* Jackshaft
* Forward quadrant
* Bus rod
* Adjustment crank
* Adjustment flexshaft
* Pedal adjustment nut.
Functional Description
The pedals of each pair move in opposite direction to each
other. When the pedals move, they move the pushrods and the
jackshaft yoke. This moves the jackshaft and the forward
quadrant. This also moves the bus rod and makes the other pair
of pedals move equally.
The two pairs of rudder pedals can be adjusted independently
to suit the captain and first officer. This is accomplished by
means of the rudder pedal adjust shaft . The rudder pedal
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