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crwdns2893792:0crwdne2893792:0 Richard E Beason ,

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The second retaining post where the tail of the small spring pushes against is missing on 2 of my 3 portafilters, evidently that is a common failure but no problem, when reassembled, the tail of the spring pushes against the lower housing and still functions as good (actually better) than ever, the value of a good cleaning every once in a while can not be overrated.  I have cleaned all my portafilters and they operate better, the pressure build up and release is back to proper operation. I have also disassembled and cleaned one of my pumps which was acting sluggish, just a cleaning and a much improved operations, there is a site which shows you how to disassemble the pump also, just search for it.

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