Help with a Cooey 840 20 gauge

[VikingTuna]

Hey guys, first time poster so please redirect me if I'm in the wrong place.

I recently inherited a Cooey 840 20 gauge from my grandfather. It's been sitting for years so I cleaned her up, but got curious and removed the 2 retaining pins above the trigger group thinking this would remove the trigger mechanism for cleaning. Wrong. Nothing came apart at all, and the retaining pins can't slide back in as there appears to be a part of the trigger mechanism in the way of the holes. In addition to this, the firing pin fell out.

There's not much on the internet regarding my issue, so if anyone has a manual or the know-how to put this thing back together please let me know! Otherwise, off to a gunsmith I guess.

 

[Grouse Man]

I think you'll have to remove the stock to get access to the back of the action to re-assemble it. Should just be one bolt/screw under the butt plate, with either a long screwdriver or socket extension.

 

[gunsaholic]

Yes, you'll have to remove the stock and likely the mainspring. Then you will have to find some way to compress the spring to reassemble which ain't fun most of the time.

 

[gunrunner100]

Or you could send the action to me.

 

[gunsaholic]

Or you could send the action to me.

There ya go!

 

[VikingTuna]

Well I've been plugging away at this for a while now. I've dug up the schematics for it, but the firing pin and buffer spring are still giving me problems. Thanks for the help everyone but I think this needs to be seen by a gunsmith :/

 

[kjohn]

Lesson in all this: If you get "curious" again, put the gun away and take an old lawn mower or something equally useless apart.

I got "curious" about the bolt on a 1904 Portugese. My parts man would come back in the room until I swore on a 20' high stack of bibles that I was nowhere near the bolt. Some people on here will know what I am talking about.