I am cleaning/refreshing my air compressor pump but am having trouble getting to one of the components. I cannot figure out how to get the piece in the attached picture apart. It looks like it may be a press fitting but I don't want to throw it in the hydraulic press and risk damaging it if not. Does anyone know how to get at the ring inside this piece? The compressor is a Holset QE296B if that matters. Thanks for any help!