曝光台 注意防骗
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FROM THE TIRES IMMEDIATELY. THE FLUID
CAN CAUSE DAMAGE TO THE TIRES.
CAUTION: DO NOT DEFLATE THE SHOCK STRUTS IF YOU
DO A GEAR RETRACTION TEST. THE SHOCK
STRUTS MUST BE FILLED CORRECTLY AND NOT
INFLATED ABOVE THE CORRECT PRESSURE. IF
YOU DO NOT OBEY THESE INSTRUCTIONS,
DAMAGE TO THE WHEEL WELL AND THE
SHOCK STRUTS WILL OCCUR.
NOSE LANDING GEAR AND DOORS - SHOCK STRUT - TRAINING INFORMATION POINT 2
EFFECTIVITY
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NOSE LANDING GEAR AND DOORS - SHOCK STRUT - TRAINING INFORMATION POINT 2
NOSE LANDING GEAR AND DOORS - SHOCK STRUT - TRAINING INFORMATION POINT 2
EFFECTIVITY
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32-30-00
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D633A101-GUN Oct 10/2002
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
General
These are the sub-systems of the landing gear extension and
retraction system:
* Landing gear control system
* Main landing gear extension and retraction
* Nose landing gear extension and retraction
* Main landing gear manual extension system
* Nose landing gear manual extension system.
The landing gear control system controls the main and nose
landing gear extension and retraction. The landing gear control
system also provides normal or alternate hydraulic pressure to
these systems:
* Main landing gear shimmy damper
* Gear retract brake system.
The main landing gear extension and retraction system controls
both main landing gear.
The nose landing gear extension and retraction system controls
the nose landing gear and provides normal and alternate
hydraulic pressure to the nose wheel steering system.
The main landing gear manual extension system controls the
manual extension of the main landing gear when hydraulic
pressure is not a available.
The nose landing gear manual extension system controls the
manual extension of the nose landing gear when hydraulic
pressure is not available.
LANDING GEAR EXTENSION AND RETRACTION - GENERAL DESCRIPTION
EFFECTIVITY
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LANDING GEAR EXTENSION AND RETRACTION - GENERAL DESCRIPTION
LANDING GEAR EXTENSION AND RETRACTION - GENERAL DESCRIPTION
EFFECTIVITY
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LANDING GEAR EXTENSION AND RETRACTION - GENERAL DESCRIPTION
LANDING GEAR EXTENSION AND RETRACTION - GENERAL DESCRIPTION
EFFECTIVITY
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32-30-00-001
Purpose
The landing gear control system controls the extension and
retraction of the main and nose landing gears.
The landing gear control system also provides normal or
alternate hydraulic pressure to these systems:
* Main landing gear shimmy damper
* Gear retract brake system.
See the Main Landing Gear and Doors section for more
information about the main landing gear shimmy damper.
(SECTION 32-10)
See the Wheels and Brakes section for more information about
the gear retract brake system. (SECTION 32-41)
Components
The landing gear control system has these components:
* Control lever assembly
* Control lever forward quadrant (not shown)
* Selector valve
* Selector valve quadrant assembly (not shown)
* Transfer valve.
General Description
Hydraulic system A usually supplies pressure to the landing
gear extension and retraction. Hydraulic system B supplies
pressure for retraction only through the landing gear transfer
valve. The landing gear transfer valve receives electrical
signals from the proximity switch electronics unit (PSEU). The
landing gear transfer valve changes the pressure source of the
landing gear from hydraulic system A to hydraulic system B
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