How to Install Hydraulic Hatch Cylinders

Written by eric w. thompson
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How to Install Hydraulic Hatch Cylinders
The hydraulic hatch cylinder props the rear door up when it is opened. (small_car image by Marc Dubus from

The hydraulic hatch cylinder on your vehicle is similar to a stabiliser strut and supports the rear door whenever you open it. Because it can receive a lot of wear and tear with frequent use, the hydraulics in the strut can become drained over time. Some vehicles use only one hydraulic cylinder for the hatch, while other vehicles use two. If the rear hatch on your vehicle is beginning to stick, or if it won't stay open, you will need to replace the hydraulic cylinder.

Skill level:

Things you need

  • Ratchet and socket set
  • Hydraulic hatch cylinder

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  1. 1

    Open the rear hatch and have a friend hold it open while you pinch the plastic cover tabs together at the end of each hydraulic cylinder with your fingers. Unwrap the plastic cover from around the cylinder by hand.

  2. 2

    Unbolt the cylinder's mounting bolts, which are located at the top and bottom of the cylinder, using a ratchet and socket.

  3. 3

    Install the new cylinder and bolt it in using a ratchet and socket.

  4. 4

    Replace the plastic cover, then test the hatch by slowly raising and lifting it.

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