Question about Porter Cable 2" Flooring Cleat Nailer FCN200

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Nailer piston won't retract far enough

After only about 10,000 nails thru this nailer, the piston suddenly stopped retracting far enough to be able to fire a nail (it retracts to about 1/8" of overlap with the next nail). There's no jamb and the feed mechanism works fine. It gets oiled before every use, but it sounds like something in the pneumatic area is hanging up. I'd like to take the thing apart and inspect for wear and at least clean and oil it. It seems easy enough to disassemble, except that I can't figure out how to remove the rubber cap so I can get to the actuator under the exhaust cap. I don't want to force anything... what's the proper method to remove it? And any suggestions for the best oil to use during reassembly? Thanks!

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  • rmolner Jun 13, 2009

    Problem solved. After taking the gun apart, it turned out that one of the two retaining clips had broken. A 3/8" long piece of the upper clip somehow broke off (probably defective hardening) and jammed itself at the top of the retract path. No damage was done other than a ding in the aluminum. We just happened to have a factory service store within 30 miles, so I went there with my broken part and they gave me a new clip and a small amount of silicon grease for reassembly (no charge... very nice of them!). There was no other wear, so I cleaned every part and reassembled the gun, which now works perfectly. A couple of notes: first, this nail gun is constructed very well and from its internal design and manufacturing quality I'd say it should last a very long time. I can see why it cost me close to $400 (purchased from Amazon last year). Second, the toughest part of taking the thing apart was figuring out how to get the rubber strike bumber off the thing. I could find no information about it and didn't want to force anything. Turns out it's glued over a tapered shaft. I used several wooden wedges on either side of the gun to slowly force if off the shaft. If I ever have to do it again, I'd make a wooden wedge tapered from 1/8" to about a 3/4" inch thick with a slot cut thru the middle to allow the shaft to pass thru and just tap it between the gun head and the bumber. Otherwise it was a piece of cake to work on.

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The rubber cap just pulls off. maybe a screw driver to pry it first but it does just pop off.

As for oil, Always use what the manufacture recommends. But in the case you can figure that out, use a low viscos oil, maybe a standard 3-1 will do in most cases.

Also WD-40 works well.

Posted on Aug 10, 2009

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