Question about Hitachi NV45AB2S Coil Roofing Nailer

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Air leaking aroung the trigger assembly from my Hitachi NR83A

I have replaced the trigger assembly from a working Hitachi Framing nail gun and it still leaks air. I have replaced all of the o-rings.

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If you took the trigger apart the part that you unscrew has a nylon ball and a black rubber ring you should check them and make sure that you didn't loose them when you took it apart,if they are there, then you need to service the gun, and after you clean all the moving part and you put it back together, it may still leak from the top,Take a rubber hammer and give it a good hit,now not to hard, and it should seal

Posted on May 04, 2010

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Trigger assembly shown below. ereplacementparts.com is one possible source for the trigger assembly others can be found on the Internet.

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