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Hitachi NR83A3 leaking from trigger when plugged in


Madthenailgunguy

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Hey guys, first time on this forum, but I have an NR83A3 that i rebuilt with all new O-Rings and seals because the customer brought it saying it leaked out of the exhaust. After I rebuild it I plugged it in and it leaks really bad out of the holes near the housing in the top valve and wants to shoot the little trigger stem out of the lower valve. I have taken it apart 5 times and cant find anything missing or any rings chipped. Any ideas? This thing is really getting to me😀 the cylinder sleeve also moves freely, so I dont think the housing is bent.

Thanks!!

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