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On Wednesday 05 September 2001 12:12, Martinez, Leon wrote: > > > I started with ten shims, I placed three of them in and either got it too > tight (hard to turn) or too loose when I tightened the crank/flexplate. > This was a long difficult thing to do using the gage flexplate > puller on and off . I got it around .005 then satisfied put > everything together with grease and gasket and rtv and the crank > movement ended up around at .01 . The rtv and gasket > ended up adding additional thrust clearance, so I removed the flexplate > and placed a shim at random , put everything together , tightened > to 200 lbs and found that the flexplate and crank assembly > tuned easily and smoothly . I tried to measure the endplay and > found it very small below .002 . > > I have a several questions, can I place four shims instead of > three at the end of the crank ? How do you compensate for > gasket and sealant at the end of the crank that mates the > fly wheel/flexplate not to mention the oil bettween shims ; When > it is put together ? What happens to the engine and compnents > when the thrust is too small to measure and the crank turns > smoothly and freely ? Will the engine expand long wise alot > and tighten the crank when clearances are below .002 inches? > > Please answer all of the questions, I do not wish to make the wrong > decision and mess something up again . I think if my gage does not > measure much play at all, almost zero, because of the grease on the > shims and the gasket at the end of the crank it may be ok but I am > not shure so let's hear it from the experts. > > First, you should not be using a gasket with an automatic flex plate. It gets the O-ring only. Gaskets are for the older cranks and flywheels. 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