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On 5 Jul 2001, at 0:42, Dave Hall wrote: > You need to take care with the tension on the diaphragm. It needs to > be relaxed (ie when you retighten) with a certain amount of pump > stroke applied, or the diaphragm may tear in use. I probably have the > figures somewhere, but it will take some finding and I haven't the > time right now. Yes, good point. I think they just want you to tighten the flange screws when the diaphram is in mid stroke. That minimizes the stress on it at both extremes. Didn't VW have a jig for holding the pump at this position while tightening? - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org