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But why not use a fourth shim if you don't have the right ones ? Herman > Second, DO NOT use 4 shims. Three shims only. If everything is right, you > should come out with the right end play. .07-.13 mm, (.0027-.005") for an new > rebuild. Wear limit is .15mm, (.006"). I usually try to get a new rebuild set > to .06-.08 mm. > Do you have the case together, or are you doing this before assembling the > case halves. Before the case halves are together, you can check it with a > feeler guage. > The reason for only using 3 shims is, 1 shim spins with the flywheel, one > stays fixed with the bearing, and the 3rd kind of acts like a bearing/thrust > between the other 2. > The reason for not too tight an end play, is that the bearing expands a > little with heat, and can seize it up. Also you need a little clearance for > oil in the shim area. > > -- > Russ Wolfe > russw@classicvw.org > http://www.classicvw.org ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org