How to Repair an AccuValve Actuator Using Kit #12686

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.

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.