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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-09-00-012
OTHER FUNCTNS
These are the other functions in the PSEU BITE:
* T/O WARN REPORT
* LGTV REPORT
* SENSOR RIGGING
* I/O MONITOR
* LRU CONFIG.
To go to one of the PSEU BITE functions, do these steps:
* Go to the main menu
* Use the up or down arrow switches until you see OTHER
FUNCTNS? in the BITE display
* Push the YES switch
* Use the up or down arrow switches until you see the function
that you want
* Push the YES switch.
T/O WARN REPORT
The T/O WARN REPORT does not show PSEU or airplane faults.
The T/O WARN REPORT function lets you see which conditions
caused the most recent takeoff warning.
LGTV REPORT
The LGTV REPORT function lets you see which conditions
caused the most recent movement of the landing gear transfer
valve to the alternate position.
AIR/GROUND SYSTEM - TRAINING INFORMATION POINT - OTHER FUNCTIONS 1
EFFECTIVITY
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AIR/GROUND SYSTEM - TRAINING INFORMATION POINT - OTHER FUNCTIONS 1
AIR/GROUND SYSTEM - TRAINING INFORMATION POINT - OTHER FUNCTIONS 1
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
General
The two main landing gear (MLG) absorbs landing forces and
holds most of the airplane weight when the airplane is on the
ground. The main landing gear also transmits the braking
forces to the airplane structure.
The main landing gear doors open to permit gear operation.
They close to aerodynamically seal the main landing gear
wheel well.
Main Landing Gear Components
Each main landing gear has two wheel assemblies.
Each main landing gear has these components:
* Shock strut
* Drag strut
* Side strut
* Gas and oil charging valves
* Walking beam
* Reaction link
* Torsion links
* Shimmy damper
* Axle assembly
* Jack pad
* MLG doors
* MLG wheel well seals.
Shock Strut
The main gear shock strut is the primary supporting member of
the landing gear. The shock strut consist of an integral drag
strut, and an outer and inner cylinder. When the shock strut
retracts or extends it rotates about two trunnion bearings and
pins at the top of the outer shock strut. Each pin extends through
a trunnion bearing and support in the wing and beam assembly.
Trunnion bolts keep the trunnion pins from backing out during
landing gear operation.
Drag Strut
The drag strut stabilizes the shock strut in a fore and aft
direction. The drag strut is an integral part of the shock strut.
Side Strut
The side strut holds the main landing gear in the extended
position.
The side strut consists of an upper and lower side strut, hinged
near the center. The lower end of the lower side strut connects
to the shock strut. The upper end of the upper side strut
connects to the reaction link. The side strut folds about the
hinge when the gear retracts.
MAIN LANDING GEAR AND DOORS - GENERAL DESCRIPTION - 1
EFFECTIVITY
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32-10-00-001
Gas and Oil Charging Valves
The shock strut uses hydraulic fluid and compressed dry air or
nitrogen to control the shock strut action. The gas charging
valve allows for pressurization of the shock strut. The oil
charging valve allows for hydraulic servicing of the shock strut.
Walking Beam
The walking beam decreases the forces that go to the structure
during actuator operations.
Reaction Link
The reaction link transfers most of the side loads from the
landing gear to the upper end of the shock strut.
The reaction link is the upper member of a space frame that
consists of these components:
* Shock strut
* Side strut
* Reaction link.
The outboard end of the reaction link connects to the shock
strut. The inboard end connects to the structure at the main
gear uplock brackets.
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