Those 592 extractors are totally different from the regular 580 style, but I think you're on the right track. Knock out the pin and the bolt comes apart. Then you should be able to replace the extractor.
Those pins are usually really tight. Make sure you have a good way to hold the bolt so you can get a good hit on it. I usually put it in the mill vise with a V block, the bench vise is too flexy.