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On 2 May 99, at 11:16, Greg Merritt wrote: > All went well... except that one of the rebuilt calipers wouldn't > accept the old pad pins. They fall right out -- the holes are waaaay too > big! (Also, the piston cups are totally dished out where they meet the > pads -- that is, they're hollow w/ a really big diameter). The caliper is > definitely the correct caliper body, for sure. The OE brake manufacturer is Alfred Teves: ATe. They used the same castings for a multitude of different applications, so what you got might or might not have come from a type 3. I am not a fan of the commercial rebuilds as I often find that they get built up wrong, or randomly, and are not right for our cars. The dished out pistons are the automotive norm, but not for Type 3s. The type 3 pistons have a central pin in the caliper body that a mechanism in the piston grabs; see your Bentley manual. Most of the rebuilders break these pins out because they are a nusance. Your caliper could be okay, could have the wrong piston diameter, or could have the pistons installed in the wrong rotational position. With the dished pistons you know that the central pin is not there. > The replacement for the other side went just fine, and a good > thing, too: not only was a piston stuck, but the caliper had begun to weep > fluid a bit. It is unusual for them to leak. This may mean that the pad wore down so far that with a worn (thin) rotor the pison could come out far enough to tilt and crack the body where it is thin next to the seal. > I suppose I should do the "right" thing and get a correct rebuilt > replacement caliper rather than just rÿ/> and run on the old one, eh? > > Also: has anyone else had this experience with oversized pin > holes? I seem to recall that late-model replacement calipers have fatter > pins and completely different springs. I've never seen oversize pin holes. Don't know what this could be unless it's just a worn out part. I don't see any way that hole should wear, though. It may just be something someone else did as a makeshift repair at one time and now you've inherited it. You should return it for a refund and email me. What did you pay for these rebuilds? Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe