Question about Stanley Bostitch N80s Nailer -rebuild Parts O`ring & Seal Kit

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Bostich N80 Framing nailer

Leaks from holes in the back and won't shoot.

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  • David Ford
    David Ford May 11, 2010

    What holes in the back. Did you rebuild this tool. Let me know and I can help

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Sorry about the delayed response. This unit needs to have the O-rings replaced. The return of the firing pin is not happening correctly. This means that the pressure release holes are still engaged. When the pin pushes out the nail, the return should cause the holes to get covered. If there is an air leak, the return will not complete resulting in an even larger air leak which is what you are now seeing. This is a relatively simple repair for any shop that handles these and would be considered a standard maintenance effort. These are decent tools and with proper maintenance will last for years. Mine is over 22years old and going string.

Dan

Posted on Feb 11, 2009

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1 Answer

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Usually this happens with the lack of lubrication as well as small leaks in the O-ring seals. I would closely examine the seals. See the link below to see a parts breakdown for Bostitch nailers. Enter your model number and you will see the parts breakdown and part numbers. Use the diagrams as a guide for disassembly and reassembly.

Feel free to post any additional questions that you have. I have had my nailer for over 20 probelm free years. The key is lubrication.

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1 Answer

My bostich framing nailer leaks air from top and will not shoot


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Have framing gun with split neoprene seal( TVA-11 Valve). What is the scam that we have to buy a thirty dollar valve kit as opposed to a thirty cent o-ring. This seems to be a scam. Bostich N80 SB


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