Landing gear systems Asa questions

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Extension of an oleo shock strut is mea- sured to determine the

C-proper operating position of the strut.

What should be checked when a shock strut bottoms during a landing?

Fluid level

What is the purpose of the torque links attached to the cylinder and piston of a landing gear oleo strut?

Maintain correct wheel alignment.

What is the function of a cam incorporated in a nose gear shock strut?

Straightens the nosewheel.

The purpose of a sequence valve in a hy- draulic retractable landing gear system is to

ensure operation of the landing gear and gear doors in the proper order.

The repair for an out of tolerance toe-in condition of main landing gear wheels determined not to be the result of bent or twisted components consists of

inserting, removing, or changing the location of washers or spacers at the center pivotal point of the scissor torque links.

A sleeve, spacer, or bumper ring is incor- porated in a landing gear oleo shock strut to

limit the extension stroke.

If an aircraft shock strut (air/oil type) bottoms upon initial landing contact, but functions correctly during taxi, the most probable cause is

low fluid.

After performing maintenance on an have affected the system's aircraft's landing gear system which may operation, it is usually necessary to

make an operational check with the aircraft on jacks.

The fusible plugs installed in some aircraft wheels will

melt at a specified elevated temperature.

The metering pins in oleo shock struts serve to

retard the flow of oil as the struts are compressed.

When an air/oil type of landing gear shock strut is used, the initial shock of landing is cushioned by

the fluid being forced through a metered opening.

If the extended longitudinal axis of the main landing gear wheel assemblies inter- sects aft of the aircraft, the wheels can be termed as having

toe-out.

The hydraulic packing seals used in a landing gear shock strut are

used only with a specific type of fluid.

To prevent a very rapid extension of an oleo shock strut after initial compression resulting from landing impact,

various types of valves or orifices are used which restrict the reverse fluid flow.

Over inflated aircraft tires may cause damage to the

wheel flange.

When servicing an air/oil shock strut with MIL-5606 the strut should be

A-collapsed and fluid added at the filler opening.

On all aircraft equipped with retractable landing gear, some means must be provid- ed to

A-extend the landing gear if the normal operating mechanism fails.

Instructions concerning the type of fluid and amount of air pressure to be put in a shock strut are found

in the aircraft manufacturer's service manual.

An embossed letter "H" on an air valve core stem

indicates high-pressure type.

An automatic damping action occurs at the steering damper if for any reason the flow of high pressure fluid is removed from the

inlet of the steer damper.


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