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On 14 Jul 2003 at 12:51, gray, douglas wrote: > The left caliper has both top and bottom valves, and the passenger has only > one valve. So both calipers should have the bleeder valves on top? Both calipers should have bleed valves on top. Bleeding from the bottom of the caliper will leave a large air pocket in the caliper which will prevent pressure buildup. In addition, if these are actually old rebuilt calipers, then the pistons have a cutout in them which should be facing in a particular direction, somewhat downward, so they really have to be done correctly. If these are really the late, 72-3, calipers then each of them originally had 2 bleed valves, so one of yours must be broken off. You can either rebuild them so that they are right, with the bleed valves on top, or send that one to me to get the bleed valve replaced. If this caliper really has just one bleed valve, then these are the early calipers, MOST of which had just one bleed valve. ALL late calipers came with dual bleed valves. You can only mount the late calipers on late, 72-3, steering knuckles. Are you sure you have late calipers? -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org