Active 8 months ago. I have a Senco clipped head FramePro nailer that is about 6 years old. DeWalt D51257 has been lightly used for home projects but it stopped working. Full Round is … As with most air nailers, when properly maintained DeWalt framing nailers will give years of trouble-free service. Low lubrication symptoms: Air leaks; Driver jams; Pusher guide malfunctions; Nail loading errors; Not firing; Correct Nails. Air leaks; Broken parts or casing; Heavy wear; Lubrication. If the nail head gets stuck between the barrel and the plunger, the gun gets stuck and only fires air. Ask Question Asked 3 years, 3 months ago. When trigger is pulled, only air is coming out (through the trigger area) but no nail is fired. Tools & Nail Guns Ship Free! Tools leaks air through nose when trigger is depressed.Piston/driver does not return fully. Pneumatic nailer leaking air. The most common issues, other than simple troubleshooting, are caused by one of two parts, the driver cylinder or the trigger valve. The reason and repair way for the nailer’s leaks air . Nail guns … Use an Allen wrench and a large hammer to blow the driver free. Nail Gun Depot offers great pricing on Paslode, Senco, Dewalt, Hitachi, Bostitch, Duo-Fast, BeA and others. Viewed 4k times 0. DeWalt Framing Nailer Troubleshooting / Repair Guidelines I) Symptom: Skips fasteners (won’t fire a nail every time) 1) Wrong nails used e.g. (3)Piston O-ring worn or damaged.Replacement O-ring. The D51844 is a framing nailer capable of driving up to a 3 ½ inch long full round common nail. clipped head nails in a full round tool or vice versa – or wrong nail angle e.g. The last time it happened, I had it in and the dealer repaired it and wrote it off to "These things happen". Bostitch type 28 deg nails will not work. All guns only need a couple of drops before each day of use or per 1,000 nails. 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