How to Apply Grease to an Aqua Lung First Stage Yoke

The First Stage refers to a signature regulator from Aqua Lung. According to Aqua Lung, the company has been specializing in recreational and professional diving equipment for over 60 years. Renowned marine biologist Jacques Cousteau developed the first underwater breathing apparatus in the early 1940s and named his invention the Aqua Lung. Avoid the rubber components of the First Stage regulator when applying grease to the yoke. Lubrication can cause the rubber components to deteriorate, making the First Stage unsafe.

Things You'll Need

  • Christo-Lube or equivalent
  • Rag
  • Powderless latex gloves
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Instructions

    • 1

      Rotate the circular plastic cap to remove the yoke screw. Remove the dust cap before applying the lubrication. Apply the specialized lubricant to the threads of the yoke cap.

    • 2

      Wipe away any excess lubricant with a clean rag. Insert the yoke screw through the base of the dust cap. Tighten the screw into the metallic body of the yoke.

    • 3

      Unscrew the retainer from the base of the yoke. Remove the washer, spring and O-rings from within the yoke retainer. Wear a pair of powderless latex gloves when applying grease to the O-rings.

    • 4

      Squeeze a small amount of the lube onto your fingers. Rub the O-rings between your thumb and forefinger until they have been lightly coated. Insert the washer, spring and O-rings back into the yoke retainer.

    • 5

      Screw the retainer back into the base of the yoke. Lubricate the yoke on a regular basis to ensure the proper function of your Aqua Lung First Stage.