Parker Double trouble-SN 179207
 

The 12 gauge gun above was given to me to do some cleaning and stock restoration.
In the process of working on a number of other parkers, I have forgotten if the gun worked when given to me. It was disassembled and I feel I have put the gun together properly; I laid another parker next to it while assembling and the issue is that the gun won't open with the forend on, but take it off and it will open the entire way with the extractors working properly.

Anyone have any advise on this, as I have taken it apart to examine the parts for wear and don't seem to see anything unusual.

Thanks in advance for any advise.

Greg Czaplewski
480-363-1596

Did the parts from that gun go back into that gun? Maybe some parts got mixed up between the guns.
The Parker mechanism is kind of a complicated one that has a lot of moving parts that are all hand fitted on a gun to gun basis. Maybe something is binding due to parts being mixed up. Just a thought.

Had the roll joint been removed and you reinstalled it?





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Sounds like there is something binding in the cocking/ hammer/ sear mechanism. The difference between forearm off & forearm on is the engagement or disengagement of the cocking hook on the barrels. With the forearm off the cocking hook is disengaged and the gun should open freely. When you install the forearm the un-hooking slide is slid back so the cocking hook can engage the cocking cam to cock the hammers when the gun is opened.

There is something either installed wrong or is binding up. I'd pull the trigger plate back off the gun and then give it an methodical inspection to determine what is binding the works up. Whatever you do, don't force anything, stop & backtrack until you find the issue. Some pictures with the trigger plate off might be helpful.

Dean, I didn't touch the roll joint and I am thinking as Paul Ehlers indicated, it is in the cocking mechanism. I took out parts one by one and tried the operation with the forend on. The only time the gun was prevented from opening was when the cocking device was put in place. It seems there is a bind when the cocking slide is trying to engage the sears on the hammers to cock the gun. All serial numbers have been confirmed on the parts.
Brian, you are right, it is a very complicated mechanism, and I can see how timing of the components is ultra important. I will try and put up some photos when I figure out how to do that.

Thanks guys

Maybe this will help...


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Parker guns and parts SN 179207
 

Regarding my request for help in dealing with my Parker not opening after attaching the forend, I have enclosed some photos of the parts included in the receiver. I tried to photo the serial number (last three numbers) for ID.

I hope the close up shots will help identify wear factor.

Please let me know if you come up with any ideas from the enclosed.

Greg Czaplewski

Parker guns and parts SN 179207
 

Thanks Dean,

I will study that schematic and see if that is what is occurring when I put on the forend.

How do the photos look?

Thanks,
Greg

In the last picture the cocking slide has a dimple protruding in the channel in which the unhooking slide rides (overstamp from detent pit on top side). In picture 7 the unhooking slide shows wear and stutter marks where the two (dimple and slide) would bear on each other. I have an action downstairs that I am going to check. I think that filing that dimple smooth in the unhooking slide race will correct the problem.
Yep. I just got mine apart and the underside race/channel of the cocking slide is perfectly smooth and all works well. You may want to smooth out the top of the unhooking slide shaft where it is nicked up as well. Good luck!

Thank you and I will address that issue. I may have other Parkers in piece I can check on also.