Hypertherm - Cut with Confidence

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  1. Remove the air fitting from the top of the actuator
    • Remove the air fitting from the top of the actuator

    • Using a 5/64" Allen Wrench, remove the retainer cap from the bottom of the actuator.

    • Place the actuator in a bench vise. Tighten the vise enough to slightly compress the actuator springs.

    • Caution: the actuator assembly contains high-force springs under compression.

    • Using the ratcheting snap ring pliers, compress and remove the snap ring that secures the actuator cap into the housing.

    • Carefully take the actuator out of the vise. All of the internal actuator components can now be removed.

  2. After cleaning and inspecting, replace at least the exhaust vent, two O-rings on the actuator shaft, poly seal, and all six springs.
    • After cleaning and inspecting, replace at least the exhaust vent, two O-rings on the actuator shaft, poly seal, and all six springs.

    • Inspect and lubricate all O-rings.

    • Install new O-rings on both ends of the shaft. Note the O-ring sizes and locations.

    • Install the Poly Seal on the actuator piston with the "thick" part of the seal facing "down" (pointing away from the springs).

    • Install the O-ring on the bearing cap.

    • After all the internal components have been re-installed, place the retainer cap with the tabs in the slots on the housing.

    • Twist the actuator cap until the four screw holes line up with the holes in the retainer.

    • Place the actuator in a bench vise. Tighten the vise enough to slightly compress the actuator springs.

    • Caution: the actuator assembly contains high-force springs under compression.

    • Using the ratcheting snap ring pliers, compress and replace the snap ring that secures the actuator cap into the housing.

    • Remove the actuator from the vise. Use a 5/64 Allen wrench to tighten the four screws that hold the retainer to the actuator cap.

Finish Line

One other person completed this guide.

Curtis Boettjer

Member since: 08/28/2013

1 Guide authored

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