lothian Posted December 19, 2020 Report Share Posted December 19, 2020 Yet another "Nailer--No Fire" post... My D51844 Type 1 was blowing air out of the exhaust when the trigger is depressed (with no fire). I fixed that problem by replacing #6 and #10 o-rings. Now the problem is, there's a quick "pop" sound with each trigger press but with no blow-by. The nailer still will not fire. I presume either the 1) piston driver is stuck, but I have no idea how to t'shoot that idea; and/or 2) another seal needs to be replaced. Anyone familiar with this specific symptom? Quote Link to comment Share on other sites More sharing options...
li150ss Posted January 30, 2021 Report Share Posted January 30, 2021 mine was doing similar, i need cylinder seal (number 1 on parts diagram) but everywhere i search says discontinued Quote Link to comment Share on other sites More sharing options...
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