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My nailer blows out air when I connect to the hose.

My nail gun blows out air by the trigger once I connect the air hose.

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  • Anonymous Mar 23, 2014

    chn20103 nailer will not shoot nailes the gun blowes air out of it

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Skinney70

Have you been lubricating it regularly with nail gun oil. We use framing nailers every day at the commercial tree farm I work at and one of the operating instruction is to put 6 to 8 drops of oil in the air hose connection on the nailer before every use. I suspect the O ring on the piston is worn out/

Hope this helps Good luck Loringh PS Please leave a rating if appropriate Thks

Posted on Nov 16, 2008

  • Loringh
    Loringh Nov 16, 2008

    not sure if I sent this the 1st time

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When hose is hooked up, driver goes down and air continually blows thru nail gun, out the top


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My nail gun will not fire a nail. Do I need to oil it or something?


Hello, W/D here.

Here's a couple of things to do or check:
1. Put a couple of drops of a light oil in the nailer with the trigger depressed, and the gun disconnected from the hose. Set it to the side for now, with the air inlet facing up.
2. Check the compressor outlet pressures. The gauge nearest the tank is the air pressure on the tank. The gauge closest to to the hose is the tool supply pressure. Between the gauges id the regulator, where you can increase or decrease the pressure to the tool.
3. Check your required air pressure for your nailer, and make sure that your regulator is supplying at least that much to operate the nailer.
4. Connect the nailer to the hose, Spray the underside of the nailer head (the slide assembly where the nails are driven) and try to drive several nails into scrap wood.
5. If the nailer operates properly, all's well. If it still fails to operate, place a few more drops into the air inlet (while holding the trigger down) and wait a few minutes, then try the gun again.
There are other things that can be done, but oiling the nailer should get you going. BTW, you should oil the nailer before each use, and when you put it away.
Best regards, --W/D--

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Or there is debris from the air hose that got lodged into the gun.
There is a head gasket and a trigger gasket.
Both can blow out any time from use, lack of oil, or they can stick open from debris.
You can take apart the head and clean it up and add oil to see if that solves problem.
You can order a gun re-build kit for your model and put in the parts yourself.
You can have a nail gun repair shop do the job.

Nail guns require gun oil.
If you don't use gun for a while, oil should be put into air hose opening and then left to run down into gun. More oil is better.
If you use 3-in-1 oil or some oil besides gun oil, then it will corrode the gaskets.
When storing air hose and guns, put tape over openings so they stay clean.
Before hooking air hose to a gun, you can also put a blower on hose and blow out the line first

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