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adjustment mechanism consists of an adjustment crank,
adjustment shaft, a jackscrew, and pedal adjustment nut
attached to the jackshaft assembly.
The adjustment crank is located on the instrument panel
forward of the control wheel. The crank is connected to a
flexshaft routed forward under the instrument panel, then down
under the floor, and aft to the universal joint in the rudder
control jackshaft assembly. Rotation of the rudder pedal
adjustment crank actuates the jackscrew which causes the
yoke, containing the pedal adjustment nut, to move fore and aft.
RUDDER AND RUDDER TRIM CONTROL SYSTEM - RUDDER PEDALS AND FORWARD QUADRANTS
EFFECTIVITY
GUN ALL 27-21-00
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-004
Rudder pedal adjustment crank and crank handle stops are
installed to prevent the rudder pedal adjustment screw from
being backdriven by heavy foot pressure simultaneously
applied to both rudder pedals. The crank incorporates a
spring-loaded pin within the knob. The stops are incorporated
into the crank housing bearing retainer. Rotation of the crank
handle is prevented in either direction beyond the stop blocks,
by contact of the spring-loaded pin that protrudes from the crank
handle. To permit crank rotation for rudder pedal adjustment,
the knob must be pulled aft so the pin clears the stops.
RUDDER AND RUDDER TRIM CONTROL SYSTEM - RUDDER PEDALS AND FORWARD QUADRANTS
EFFECTIVITY
GUN ALL 27-21-00
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D633A101-GUN Jun 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-004
RUDDER AND RUDDER TRIM CONTROL SYSTEM - RUDDER PEDALS AND FORWARD QUADRANTS
RUDDER AND RUDDER TRIM CONTROL SYSTEM - RUDDER PEDALS AND FORWARD QUADRANTS
EFFECTIVITY
GUN ALL 27-21-00
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D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-004
Purpose
The aft rudder control components transmit rudder pedal input
to the hydraulic power control units.
Location
The aft rudder control components are in the vertical stabilizer,
forward of the hydraulic PCUs.
Physical Description
There are these aft rudder control components:
* Rudder aft quadrant
* Quadrant pushrod
* Rudder pedal force transducer
GUN 001-005, 201-999 PRE SB 737-27-1253
* Rudder control torque tube with four cranks.
GUN 006-099, 101-115; GUN 001-005, 201-999 POST SB
737-27-1253
* Rudder control torque tube with five cranks.
GUN ALL
Functional Description
GUN 001-005, 201-999 PRE SB 737-27-1253
When the rudder cables move, they move the aft control
quadrant. This moves the quadrant output rod and the torque
tube with the four cranks. When the rudder control torque tube
turns, it moves the input rods to the main PCU and to the
standby PCU. It also turns the feel and centering unit out of the
detent position.
GUN 006-099, 101-115; GUN 001-005, 201-999 POST SB
737-27-1253
When the rudder cables move, they move the aft control
quadrant. This moves the quadrant output rod and the torque
tube with the five cranks. When the rudder control torque tube
turns, it moves the input rods to the main PCU and to the
standby PCU. It also turns the feel and centering unit out of the
detent position.
GUN ALL
The rudder pedal force transducer sends signals to the flight
data acquisition unit (FDAU).
See the flight data recorder system section for more information
about the FDAU. (SECTION 31-31)
RUDDER AND RUDDER TRIM CONTROL SYSTEM - AFT RUDDER CONTROL COMPONENTS
EFFECTIVITY
GUN ALL 27-21-00
Page 16
D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-005
RUDDER AND RUDDER TRIM CONTROL SYSTEM - AFT RUDDER CONTROL COMPONENTS
RUDDER AND RUDDER TRIM CONTROL SYSTEM - AFT RUDDER CONTROL COMPONENTS
EFFECTIVITY
GUN 001-005, 201-999 PRE SB 737-27-1253 27-21-00
Page 17
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-21-00-005
RUDDER AND RUDDER TRIM CONTROL SYSTEM - AFT RUDDER CONTROL COMPONENTS
RUDDER AND RUDDER TRIM CONTROL SYSTEM - AFT RUDDER CONTROL COMPONENTS
EFFECTIVITY
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