Cooey 840 advise

triggerman42

CGN Regular
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Hi all. I have an old cooey , 840 , 12 gauge that needs a little TLC.
The hammer spring is very weak. It's way to easy to #### , and the hammer doesn't hit near hard enough to dent a primer.
Should I buy just the spring for it ? , or the whole assembly consisting of the spring , plunger , and plunger bushing?
I understand the old assembly can be driven out sideways easy enough , but getting the new one seated in there , under spring tension can be quite challenging. Are there special tools needed? Needle nose pliers gonna do it?
Anybody have a drawer full of these parts ? lol
It's not a bad old gun . The wood has been redone on it already. The bore is bright + shiny. Just needs a more powerful hammer blow to make it shooter again.
 
It could be mis assembled already causing the weak strike. Take it to a gunsmith who is familiar with them and can supply the parts you need.
 
Pull the butt stock off and look at the spring/plunger assy. See that little hole? pull the hammer back slowly and you will. Put a paper clip thru that hole and it'll catch the spring and the assy should fall out.
Post a clear pic of the assy after you pull off the stock so we can see if it's complete/proper
 
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