Hitachi framing nailer

[AntV]

I replaced the drive piston on my Hitachi framing nailer and now when I hook up the air, it just engages the piston and passes air. It doesn't cycle. Anyone got any ideas?

[cmoorejack]

Hey AntV,
aside from taking it back apart and reassembling a few times.. try holding down the trigger with the safety engaged.[no nails and pressing down on some wood]and then hook the air back up..this is an old repair trick from the factory techs..also make sure your o-rings are lubed of course..
hope this helps...
Craig