Fixing cocking mechanism?
 

I have a Parker V that has two barrels and two fore arms. One of the fore arms cocking mechanism is stuck or frozen.

Can someone tell me how to fix this?

Are you talking the cocking hook on the barrel lug? There is nothing in the forend itself that is related to the cocking of the gun. Unless you are talking ejector operation of the gun is so equipt.

There are two small levers in the forearm that if they are not cocked the forearm will not go on the barrel. I tried cocking them and only one will stay the other will not catch and I need to fix this.
Any suggestions

Sounds like you have an ejector gun. Correct?

If so, yes, they must be cocked back in order to install the forend. You must push back on them and also lift up on the two sear tips in the face of the forend iron. Kind of tricky to do with two hands. A padded vise do hold he forend is a big help.

Is this gun new to you and it has this issue or did it just start acting up?

Thanks I had not been lifting up on the two sear tips. Will try that to see if I can get them both to lock. This is an old family gun that was my wife's grandfathers gun. It is a 12ga with two barrels. All parts have matching serial numbers.

Sounds like you have a very nice gun there. What a great item to still have in the family. You should post some photos of it if you can.

Just another note about the ejector hammer sears. If you simply push the hammers back, they ShOULD catch and hold. By the sear tips will be in the downward position. The hammers will hold, and the forend will install, but the sears will be tripped while putting the forend back on. But you may be able to get the forend on. Lifting the sear tips into the upward position puts the system into the state it should be for proper forend installation.
You see, the ejector sears have a dual sear design. Thy hold the hammers when in 2 different positions. One is needed for proper forend installation/removal and the other is needed for proper ejector operation once the forend is on the gun. A little hard to explain.

It is not uncommon for some of the parts to get a little worn with use and they start to not work right.

I have been unable to get one of the levers to hold open on the forearm one will, but the other is not catching. Is this a difficult job to fix.

Sounds like you need either a new ejector hammer or ejector sear. Not difficult to install, just a bit of a harder part to find.

Are there any instructions anywhere on just taking it apart and giving the forearm mechanism a good cleaning?

If you give me some time, I can post some photos on ejector forend disassembly that would aid in doing this. I may not be able to get to it until next week.

Other than that, I do not know of another instructional source for this info. Others may chime in here...