Archived from the Tools In Action forum (Dewalt). This thread is read-only.
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?
mine was doing similar, i need cylinder seal (number 1 on parts diagram) but everywhere i search says discontinued