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Author Topic: Le Nivex gauge pump  (Read 2906 times)
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davidwheeler
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« on: 01 June, 2016, 01:25:19 PM »

Has anyone managed to get inside one of these?   I think from pictures on the net that the bottom unscrews but have not managed to do this and I don't want to force things.    It has lost all its pressure ability, I suppose there is some sort of non return valve in the piston?
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David Wheeler.  Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
Tony Stephens
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« Reply #1 on: 12 June, 2016, 06:20:49 PM »

Mike Benwell seems to know his way around Nivex gauges
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davidwheeler
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« Reply #2 on: 16 June, 2016, 10:55:00 AM »

I could faintly see aline round the end indicating a cap but I could not undo it.  I made a very thin tool for the lathe and cut away the cylinder so as to take the pressure off and was then able to unscrew the cap - desperate measure but it worked.    Inside is a piston with a thin and perished cup washer.   I bought a cup washer but it is too thick and would need I make a new smaller piston. I tried making a cup washer but no good so I simply fitted a couple of plain leather washers - and it seems to work!


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David Wheeler.  Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
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