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Message: <blockquote data-quote="Tazza" data-source="post: 16457" data-attributes="member: 82">The manual said to use threaded rod to pull the cups in, i personally machined an old piece of aluminum to fit the cup then drilled a hole and machined the end of a piece of chrome bar to fit the hole. I then used a hammer to belt it into place, you feel the "bounce" change as it seats. I also built an adapter for my porta power pull ram, it pulls them in with ease. Can you try a larger diameter piece of threaded rod? say 3/4? The finer the thread you can get the better as you get more force. But most cyclone rod as we call it is quite coarse and about 1/2"Do you have access to a lathe? if so, i would look at doing it that way, i know its probably not the best but worked a treat for me. I built the hydraulic one for 2 full sets i need to do shortly, i tested it with the old cups and worked really well but its a lot of work for something you will only use once, thats why the hammer or threaded rod is a better option. I spent the better part of a day building it, machining threads take time....I guess it depends on just how bad the wear ring is.... If its badly damaged it may be best to get a new one, you don't want to do the job again..... If its only the other edge you may get away with it as the seal runs more or less in the centre of the ring.FYI its not a bother, if you have questions, keep them coming!</blockquote>