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-   -   no pressure... (http://airgunsforum.org/showthread.php?t=443)

Mccaw64 01-02-2017 03:38 PM

no pressure...
 
Recently acquired a old daisy 840 single pump, it functions fine,but it does not have the pressure it should. I've watched all the you tube videos,and it seems that the o- ring on the plunger is the only thing that seals the pressure chamber, is it time for a new o ring?? It doesn't seem to be that difficult to tear down and replace. Ideas? Opinions?

Clifford 01-09-2017 01:42 AM

Never taken one apart but the likely culprit would be one of the seals. If you take it apart it should become more obvious which one is bad.


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