I stopped by the dealer to have them fill up my tires with nitrogen and while I was waiting, somebody called the service guy with a problem with the convertible top hydraulic pump on a VW. He had some doubts about the question and entered this site, did a search and found a picture of one, which resolved his doubts. I suppose that it makes sense, because it is a lot easier to search this site than go find a manual and look it up...Mark