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32-51-00-001
NOSE WHEEL STEERING SYSTEM - GENERAL DESCRIPTION
NOSE WHEEL STEERING SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
32-51-00-001
General
The components of the nose wheel steering system are in the
flight compartment and the nose landing gear wheel well.
Flight Compartment Components
These are the nose wheel steering components in the flight
compartment:
* Alternate nose wheel steering switch
* Steering wheel
* Control cables.
Nose Landing Gear Wheel Well Components
These are the nose wheel steering components in the nose
landing gear wheel well:
* Control cables
* Rudder pedal steering mechanism
* Rudder pedal steering rotary actuator
* Summing mechanism
* Steering metering valve module
* Steering actuators (2)
* Nose wheel steering collar.
Location
The alternate nose wheel steering switch is on the captain
forward instrument panel.
The steering wheel is on the sidewall panel below the captain
number 2 window.
The rudder pedal steering mechanism and rotary actuator are
below the flight compartment floor on the left side. You get
access to them through a removable panel in the left side of the
nose landing gear wheel well.
The control cables go from the steering wheel, through the
rudder pedal steering mechanism, and down to the summing
mechanism on the nose landing gear.
These are the components on the nose landing gear:
* Summing mechanism
* Steering metering valve module
* Steering actuators
* Nose wheel steering collar.
NOSE WHEEL STEERING SYSTEM - COMPONENT LOCATION
EFFECTIVITY
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-51-00-002
NOSE WHEEL STEERING SYSTEM - COMPONENT LOCATION
NOSE WHEEL STEERING SYSTEM - COMPONENT LOCATION
EFFECTIVITY
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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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
32-51-00-002
Purpose
The rudder pedal steering mechanism does these functions:
* Mixes the steering inputs from the rudder pedals and the
steering wheel
* Prevents rudder pedal inputs when the airplane goes in the
air
* Supplies centering forces.
The rotary actuator engages the rudder pedal steering when
the nose gear is on the ground and disengages it in the air.
Location
The rudder pedal steering mechanism is below the flight
compartment floor. You get access to the mechanism through
the access panel on the left side bulkhead of the nose landing
gear wheel well.
The rotary actuator is below the flight compartment floor, aft of
the rudder pedal steering mechanism. You get access to the
actuator through the access panel on the left side bulkhead of
the nose landing gear wheel well.
Physical Description
The rudder pedal steering mechanism is controlled by the
rudder pedal rotary actuator and has these components:
* Steering crank
* Rudder pedal steering quadrant
* Clutch arm
* Clutch crank stop
* Centering spring
* Eccentric drum.
The rudder pedal steering rotary actuator is a two-position
electrical actuator that uses 115v ac power from bus 2. The
actuator has a control drum connected to the bottom and a
cable that is a connected to rudder pedal steering mechanism.
Functional Description
The rudder pedal steering rotary actuator moves a eccentric
cam in the rudder pedal steering mechanism when the airplane
goes in the air. This will not let the rudder pedal inputs move the
nose wheel steering control cables.
NOSE WHEEL STEERING SYSTEM - RUDDER PEDAL STEERING MECHANISM AND ROTARY ACTUATOR
EFFECTIVITY
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-51-00-003
NOSE WHEEL STEERING SYSTEM - RUDDER PEDAL STEERING MECHANISM AND ROTARY ACTUATOR
NOSE WHEEL STEERING SYSTEM - RUDDER PEDAL STEERING MECHANISM AND ROTARY ACTUATOR
EFFECTIVITY
GUN ALL 32-51-00
Page 7
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
　
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