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Senco stapler piston will not return & the bumper is like new

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Not much to go on there. As the plunger makes it's attempt to return, is there an increase in exhaust pressure? What I'm getting at is that there should be 2 sets of O rings. One for downward force and one for upward. Are both sets sealed tight? Are they lubed porperly? Could the cylinder wall from which the plunger functions be warped or defected in anyway? I'm just throwing this one out there so please don't be offended...Are the O rings the proper size?

Posted on Nov 05, 2008

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