Aircraft Shock Strut Servicing and Landing Gear Alignment Quiz
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Questions and Answers

What is the maximum pressure rating for the valve core assembly of the AN-6287 valve?

  • 5000 psi
  • 4000 psi
  • 2000 psi
  • 3000 psi (correct)

    • What is the maximum pressure rating for the MS 28-889 valve?

  • 5000 psi (correct)
  • 4000 psi
  • 3000 psi
  • 2000 psi

    • How does the swivel nut size of the AN-6287 valve compare to the valve body hex?

  • Larger
  • Not mentioned in the text
  • Smaller (correct)
  • The same size

    • What is the purpose of the swivel nuts on both valves?

    <p>Engage threads on an internal stem to tighten or loosen the valve stem to a metal seat servicing shock struts</p> Signup and view all the answers

    What is the first step in the procedure for deflating, servicing, and re-inflating the strut?

    <p>Removing the air servicing valve cap</p> Signup and view all the answers

    What may be necessary for aircraft on jacks to achieve full compression of the strut during servicing?

    <p>Jacking the lower strut with an exerciser jack</p> Signup and view all the answers

    What is involved in the procedure for bleeding the shock strut?

    <p>Constructing and attaching a bleed hose, releasing any air pressure, filling the strut, attaching the bleed hose to the service port, and compressing and extending the strut fully</p> Signup and view all the answers

    What is the purpose of the torque links assembly in retractable landing gear?

    <p>Prevent the lower strut cylinder from rotating out of alignment with the longitudinal axis of the aircraft</p> Signup and view all the answers

    How are the link ends of the torque links assembly attached?

    <p>To the fixed upper cylinder and the moving lower cylinder with a hinge pin in the center</p> Signup and view all the answers

    What is the maximum pressure rating for the valve core assembly of the AN-6287 valve?

    <p>3000 psi</p> Signup and view all the answers

    What is the maximum pressure rating for the MS 28-889 valve?

    <p>5000 psi</p> Signup and view all the answers

    What is the purpose of the swivel nuts on both valves?

    <p>Engage threads on an internal stem to tighten or loosen the valve stem to a metal seat servicing shock struts</p> Signup and view all the answers

    What is involved in the procedure for bleeding the shock strut?

    <p>Constructing and attaching a bleed hose, releasing any air pressure, filling the strut, attaching the bleed hose to the service port, and compressing and extending the strut fully</p> Signup and view all the answers

    What is the purpose of the torque links assembly in retractable landing gear?

    <p>Prevent the lower strut cylinder from rotating out of alignment with the longitudinal axis of the aircraft</p> Signup and view all the answers

    What is the maximum pressure rating for the valve core assembly of the AN-6287 valve?

    <p>3000 psi</p> Signup and view all the answers

    What is the maximum pressure rating for the MS 28-889 valve?

    <p>5000 psi</p> Signup and view all the answers

    What is the purpose of the swivel nuts on both valves?

    <p>Engage threads on an internal stem to tighten or loosen the valve stem to a metal seat</p> Signup and view all the answers

    What is involved in the procedure for bleeding the shock strut?

    <p>Constructing and attaching a bleed hose, releasing any air pressure, filling the strut, attaching the bleed hose to the service port, and compressing and extending the strut fully</p> Signup and view all the answers

    What is the purpose of the torque links assembly in retractable landing gear?

    <p>Prevent the lower strut cylinder from rotating out of alignment with the longitudinal axis of the aircraft</p> Signup and view all the answers

    Study Notes

    Aircraft Shock Strut Servicing and Landing Gear Alignment

    • AN-6287 valve in Figure 1324A has a valve core assembly, rated to 3000 psi, but the core itself is only rated to 2000 psi
    • MS 28-889 valve in Figure 1324B has no valve core and is rated to 5000 psi
    • Swivel nut on AN-6287 valve is smaller than the valve body hex, while on MS 28-889 it is the same size as the valve body hex
    • Both valves' swivel nuts engage threads on an internal stem that loosens or draws tight the valve stem to a metal seat servicing shock struts
    • Procedure for deflating, servicing with hydraulic fluid, and re-inflating the strut involves positioning the aircraft, removing the air servicing valve cap, checking swivel nut tightness, and releasing air pressure
    • When all air has escaped, the strut should be compressed completely; aircraft on jacks may need to have the lower strut jacked with an exerciser jack to achieve full compression
    • Procedure for bleeding the shock strut involves constructing and attaching a bleed hose, jacking the aircraft, releasing any air pressure, filling the strut, attaching the bleed hose to the service port, and compressing and extending the strut fully
    • Retractable landing gear consists of torque links, trunnion and bracket arrangements, drag strut linkages, electrical and hydraulic gear retraction devices, locking, sensing, and indicating components, and steering mechanisms for nosegear
    • Torque links assembly keeps the lower strut cylinder from rotating out of alignment with the longitudinal axis of the aircraft in some strut assemblies
    • The link ends are attached to the fixed upper cylinder and the moving lower cylinder with a hinge pin in the center to allow the strut to extend and compress
    • Alignment of the wheels of an aircraft is also a consideration for safe operation and maintenance
    • Landing gear alignment and support is crucial for the proper functioning of retractable landing gear on an aircraft

    Aircraft Shock Strut Servicing and Landing Gear Alignment

    • AN-6287 valve in Figure 1324A has a valve core assembly, rated to 3000 psi, but the core itself is only rated to 2000 psi
    • MS 28-889 valve in Figure 1324B has no valve core and is rated to 5000 psi
    • Swivel nut on AN-6287 valve is smaller than the valve body hex, while on MS 28-889 it is the same size as the valve body hex
    • Both valves' swivel nuts engage threads on an internal stem that loosens or draws tight the valve stem to a metal seat servicing shock struts
    • Procedure for deflating, servicing with hydraulic fluid, and re-inflating the strut involves positioning the aircraft, removing the air servicing valve cap, checking swivel nut tightness, and releasing air pressure
    • When all air has escaped, the strut should be compressed completely; aircraft on jacks may need to have the lower strut jacked with an exerciser jack to achieve full compression
    • Procedure for bleeding the shock strut involves constructing and attaching a bleed hose, jacking the aircraft, releasing any air pressure, filling the strut, attaching the bleed hose to the service port, and compressing and extending the strut fully
    • Retractable landing gear consists of torque links, trunnion and bracket arrangements, drag strut linkages, electrical and hydraulic gear retraction devices, locking, sensing, and indicating components, and steering mechanisms for nosegear
    • Torque links assembly keeps the lower strut cylinder from rotating out of alignment with the longitudinal axis of the aircraft in some strut assemblies
    • The link ends are attached to the fixed upper cylinder and the moving lower cylinder with a hinge pin in the center to allow the strut to extend and compress
    • Alignment of the wheels of an aircraft is also a consideration for safe operation and maintenance
    • Landing gear alignment and support is crucial for the proper functioning of retractable landing gear on an aircraft

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    Description

    Test your knowledge of aircraft shock strut servicing and landing gear alignment with this quiz. Explore valve specifications, procedures for servicing and bleeding shock struts, and the components and functions of retractable landing gear. Be prepared to demonstrate your understanding of the crucial role that landing gear alignment plays in the safe operation of an aircraft.

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