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A/C Compressor Relief Valve Replacement

  1. Remove the relief valve cover (A), the relief valve (B), and the O-ring (C). Plug the opening to keep foreign matter from entering the system and the A/C compressor oil from running out.
  1. Clean the mating surfaces.
  1. Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil before installing it.
  1. Remove the plug, and install and tighten the relief valve.