So I recently acquired an old Sheridan with the janky push button safety you have to hold while firing and it’s got a weird problem going on. So the rifle pumps and holds air all day and the trigger system works flawlessly; however, when I fire the gun the air escapes out of the breech/bolt area. It’s missing the little cam plate cover but I wasn’t sure if that was the only thing causing it. It seems like there’s more to it than that but so far I’ve only worked on old crosman and Benjamin pistols so this model is completely new to me. I attached a photo and video, it’s hard to tell what it’s doing in the video but ALL the air is escaping out of the breech. Any help would be greatly appreciated!
Sheridan Weird issue with old push button safety Sheridan blue streak, NEED HELP!
- Thread starter Hughjazz69
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Get the cam plate, the cover and the two screws. When adjusted correctly, you'll be good to go.
Maybe grab a new lug screw too.
Maybe grab a new lug screw too.
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Looking closely at the rear of breech section, it appears that it has seperated from the main tube?
Examine it closely for seperation of the solder joint, and get that cam plate installed!
Examine it closely for seperation of the solder joint, and get that cam plate installed!
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ok, didnt you see in the video whats happening?? Becasue the 2 screws are missing along with its cam plate the bolt is no longer locked closed.Upon discharge the bolt blew back open slightly. So just get the 2 screws and the 2 part cam plate (inner and outer). I would still check your bolt O-ring . If you see it has a flat appearance around the perimeter edge change it. You can change that without taking the bolt out.
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You need these parts.
And two screws.
The problem is finding them available.
I have an idea where there are some. If you like I'll PM you.
And two screws.
The problem is finding them available.
I have an idea where there are some. If you like I'll PM you.
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This is what the parts look like installed.
There's a cam under the plate that pushes the bolt forward when you lock the bolt handle into firing position.
There's a cam under the plate that pushes the bolt forward when you lock the bolt handle into firing position.
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Thanks everyone for the quick responses, I did see what was happening in the video but even holding that bolt closed with a lot of pressure didn’t stop the issue at all so I had a suspicion that something else was going on. I decided to stick a wooden rod down the barrel and sure enough the barre has pellets lodged in it causing the air to escape back out the breech area. I’ll remove the pellets tomorrow and let yall know if that solves everything.
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I did notice that but even after applying pressure to that bolt the air was still escaping out the breech. I decided to test some other things out and sure enough the barrel has pellets lodged in it forcing the air back out the breech.
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Found what I believe to be the issue, wrong size pellets are lodged in the barrel from the previous owner. But I’ll definitely look into this as well.
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That would be greatly appreciated. Turns out there are pellets lodged in the barrel forcing the air back out the breech but I definitely want to get these parts installed as well.
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Before trying to drive the pellets out of the bore, first remove the bolt and find out how long the jam is. If there's very many stacked in there, then simply pushing them out may not be an option, and definitely don't try to pound them through by force... It will make a difficult job even harder.
Get an 1/8 inch steel rod and, with a torch, heat several inches up to a cherry red. Then melt through the center of the pellet jam. You might have to keep reheating the rod till you finally make a hole all the way through. This will provide some relief when you drive it out. Next step is to spray some WD40 down the barrel on both sides of the pellet jam. A brass rod and mallet can then be used to tap the slug out, preferably the shortest route.
I've used this method on several guns.
Attached pics show the worst I've seen. This early Sheridan had over three inches of compressed pellets stuck in the barrel.
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