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Old 01-02-2017, 02:38 PM   #1
Junior Member
Join Date: Nov 2016
Posts: 2
Default 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?
Mccaw64 is offline   Reply With Quote
Old 01-09-2017, 12:42 AM   #2
Join Date: Oct 2012
Posts: 85

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.
Clifford is offline   Reply With Quote

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