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i didn't say it was hard to "disassemble". It is difficult IMHO to assemble. As stated in an earlier post, if the clamp is just a little snug, it freezes. If the pump head is not aligned right (which is not that easy to determine) it will make wear noise. As I stated, the idea IS GREAT, just...

The claim is that this is an improvement on March or other standard pump designs, but between the difficulty in assembly and the infamous thrust washer, it seems to be more of a pain than the old designs were. On the other hand, the quiet operation (when it is assembled perfectly) and the...

I had the same problem, as well as chattering noises occasionally. I found that it very difficult to reassemble the pump after cleaning and the alignment is critical. The idea of the tri-clo clamp on the pump head is a great concept but there really is no positive seat or index lip to hold the...