Ski Pylon

The ring and finger were held in by roll pins on the body of the pylon.   the ring and finger should has a "post" that fits inside the socket of the pylon, that the roll pins went through.    if you have a cap that has a "post" on the bottom, you would need to duplicate the ring and finger pulling process, just drive the roll pins out, and twist/pull the cap out.    There is a good chance that the cap is corroded in place though, and you may need to try a strap wrench, oil filter wrench or if needed, some sort of pipe wrench to get it to turn.    pulling it out may require some up force from a strap or chain fall of sorts also.   worst case scenario is take it to a machine shop.   hopefully you don't have to resort to this.   pictures might be helpful also! good luck!