I took a Crosman 2240 and rebuilt it to I guess you could say a 1740, Lothar Walther .177 barrel, 1701p trigger, steel breech, and a Boss RP valve. My first CO2 cylinder got stuck so bad I had to take the gun apart to get the valve and cylinder out as one unit. The cylinder had stuck on the piercing pin. First I tried to drill the end of the cylinder and hook it out but it was stuck too firmly. I had to hold the valve in a vise, the cylinder with some vice grip pliers and knock it off with a small hammer. After that I polished the piercing pin, reassembled and loaded a new cartrdge, fired about 12-15 shots then put it aside for a couple of days, no leaks so good there, This morning I decided to sacrifice the remainder of the cylinder and degassed and it came out fine. I am hoping that is to be a one time occurance. Anyone else have such an experience.
Stuck CO2 cylinder
- Thread starter jkingrph
- Start date
Have had cart stick but I take small hammer with gun muzzle pointed to floor and tap on loose end cap for tube and cart comes loose every time.
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You probly fixed it by polishing the pin. So long as you use a drop of oil on the end of the cart every couple of carts I doubt you will have that problem again. Heavy hammer springs and low or no air can cause that to happen more often.
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besides a drop of oil, I try to pay attention to the shot sound. Once the sound changes I stop, that way I know there is at least a tiny amount of pressure left. That helps make sure the caplet will release itself when the cap is unscrewed.
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Since I did destroy an air tube (enuf hammering to bend) that wouldn't come unstuck. I came up with a emergency backup ejection system. Hopefully I never need it. With my hipac, no need to worry about air tube being converted to hpa.
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Just use the same kind of magnet that you use to retrieve a nut or bolt with. They are telescopic and can be bought at automotive stores. I have CO2’s stick every once in a while on my SPA pistols.
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Lotsa times problem stems from simply overtightening the new co2. Just tighten then unscrew cap 1/4 turn and dryfire first shot or 2 simple.
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It was stuck so tight, a magnet would not have worked. It took a sharp hit to break it free. I think the way I worked it was the only solution.
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I’m with Odoyle. If it was stuck that bad, you have another problem. Namely cranking the cap too much. It doesn’t take much pressure to get a CO2 to seal. Finger tight. No tools required.
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All I have done is finger tight, Two other 2240 based guns and never a problem until this one. I'm not a fan of using a screwdriver on a gun for routine changes. I am beginning to think it was a one time thing, cause unknown. I have since shot enough though it to use two cartridges that came out with no problem.
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Excellent...so glad to have found this thread. I have the same issue with a stuck cartridge. Or, at least I did! 
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I'm thinking that was a one time or at least a rare occurance. My grandson was here today and a neighbors grandson came over and we had them shooting air pistols. We went through several cartridges in the gun and never a problem
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I developed that problem because I installed a barrel band with set screws on the air tube. Bad, bad bad. I saved the tube.
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It actually came with a barrel band on the tube. I made sure the grub screw on both that tube and the barrel are not too tight.
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