Tried to remove the breech screw on my 2240 today. Seemed very tight. The head of the screw stripped out where the tiny allen wrench fits in it. Any suggestions on getting the screw out. Is Crosman the only place to get a new one. Haven't seen them listed any where. Steve
It's not a common size,4-48 is the thread size. Try clamping the breech down and if you have some torx bits use the one that fits in the allen hole. Sometimes this works. Check eBay for accustoms. He sometimes has some better ones listed.
Plastic breech or metal?
I have some stainless slotted screws. If you want a couple send me your address in a PM.
Carl
QUACK!
Steve, many of us have done the same. :-[ Now I use the slotted breech screws from AC Customs. You can't have too many. Plus he is a good guy.
http://www.ebay.com/itm/SS-Slotted-Breech-Screw-for-a-crosman-2240-2250-1377-1322-2300-pc77-22xx-13xx-/221888318704?hash=item33a9930cf0:g:LogAAOxyQj9RO-C2 (http://www.ebay.com/itm/SS-Slotted-Breech-Screw-for-a-crosman-2240-2250-1377-1322-2300-pc77-22xx-13xx-/221888318704?hash=item33a9930cf0:g:LogAAOxyQj9RO-C2)
Thanks for the help guys. Carl, It is a metal breech. Thanks for the offer but I have ordered a half dozen from A C Customs. I will most likely wait till I have new screws in hand before attempting to get this old one out. Steve
I have drilled the head off the screw and then after taking the breech off, there was just enough sticking out to unscrew it by putting a thumb on it and turning counter clockwise.
Hope to avoid the drill. It will be a last resort. Don't want to take a chance of damaging the breech. It cost more than the gun. :(
If you use a drill bit slightly bigger than the thread shaft, the head will spin with the bit when it comes off. I've done this twice without any breech damage.
Thanks Dave. New screws should be here Friday. Planning on fixing this over the week end. Steve
Quote from: stevecurr on April 26, 2016, 03:45:12 AM
Hope to avoid the drill. It will be a last resort. Don't want to take a chance of damaging the breech. It cost more than the gun. :(
The same thing happened to me last year. I made a thread about it and got some great advice.
I bought an individual left-handed drill bit and it worked great. Just use low speed on the drill in reverse or turn by hand. Similar to this one, but I only bought one: http://www.harborfreight.com/left-hand-drill-bit-set-13-pc-61686.html (http://www.harborfreight.com/left-hand-drill-bit-set-13-pc-61686.html)
Just google left-handed drill bit.
I removed the screw with out damaging the steel breech, I immediately upgraded the screw and no issue since.
Quote from: stevecurr on April 24, 2016, 01:42:34 AM
Tried to remove the breech screw on my 2240 today. Seemed very tight. The head of the screw stripped out where the tiny allen wrench fits in it. Any suggestions on getting the screw out. Is Crosman the only place to get a new one. Haven't seen them listed any where. Steve
It might be too late since it sounds like the damage to the head of the screw is already done but in the future, IIRC, it's important to remove the larger rear breech screw first when disassembling and put the tiny forward breech screw in first when reassembling. If the holes in the steel breech are the tiniest bit off, enough longitudinal stress is generated to make the screws difficult to turn. If the smaller (more subject to damage) screw is placed first and removed last it's less likely to be wedged tight. The larger rear breech screw is more able to tolerate the stress and the larger socket head can handle the torque. I've had my airguns apart and back together several times (if not many times!) and I've yet to have an issue with the front breech screw. To be sure tho, I do have a few replacements (stock ones from Crosman) in my spare parts box ;). You didn't describe the order of screw removal in your OP but this just might have been the issue. Maybe not ???
Flex
I came to that conclusion a couple of nights ago as I was working on my 1377. Was have alignment problems with the small screw. I'm sure that's what I done to my 2240 by trying to remove the small screw first. Steve
The process described by Flex is generally the best off and on method. Once the hex key in well set into the screw, I also grasp the breech and air tube with my middle finger through the trigger guard and squeeze very firmly prior to first (or final if installing) turning of the small screw. There is some additional tension on it due to the transfer port seal.
Before loosening the screw push down on the breech as hard as you can, reliving some pressure from it. I've had to use dremel cutoff wheels to slot those screws before - not fun!
Wait a minute guys...
I agree that the 4-48 breech screw should be the first in and last out...and some clamping of the breech is good...but -
The screw is meant for fastening - not for applying undue stress. If you have to apply excessive clamping or torque to install and remove the 4-48, then your TP sleeve is probably too long...or the barrel countersink is too shallow. And I think that is the root of the problem - creating the creative solutions :)
Correct the TP sleeve fit first. You should be able to squeeze the breech completely flat on the tube with just your thumb and fingers on both sides of the port. Some fitments are so bad that the breech will never sit flat and solid. There needs to be some compression of the breech gasket to seal - but it doesn't take much.
Also, if I had to remove a stripped 4-48 hex I would use a 1/16" left-hand drill bit (drill set in reverse of course). Then replace with a better screw.
I think I over tightened this one when I put it in. Most likely half stripped then. It didn't take much at all to finish it off when I tried to remove it. Ridiculous that they would design a screw to use that small of a allen wrench. All my guns will now get better quality screws. Steve
Excellent point, Wyoman. :-* I had one that while down on the air tube, had that feel of not precisely right.
Would that same screw work for 13XX Guns? I could use a few with Slotted heads though!
also looking for the detent Ball/spring for the safety I do recall seeing the Ball/spring set on ebay..awhile back
Yup. The breech screw for the 13xx and 22xx are the same size.
Quote from: Pumpmeister on May 11, 2016, 04:39:14 PM
Would that same screw work for 13XX Guns? I could use a few with Slotted heads though!
also looking for the detent Ball/spring for the safety I do recall seeing the Ball/spring set on ebay..awhile back
I think the bearing size is 3/32" and you can use BIC lighter flint springs. I believe bearing balls can be found from a bike shop, or even online for cheap.
Always managed to keep the springs, but the ball bearing is a different story. Good news is the little key chain/dog tag style ball chains are almost the same size. Cut one ball off those and it works like a champ. Next to free.
Quote from: beejwest on May 18, 2016, 01:11:59 AM
Always managed to keep the springs, but the ball bearing is a different story. Good news is the little key chain/dog tag style ball chains are almost the same size. Cut one ball off those and it works like a champ. Next to free.
The wildest one I've heard was from Charlie Mellon...he bought several pounds of #8 (iirc?) steel shot because he got tired of losing them. Read that somewhere awhile back. Said he doesn't bother looking for lost ones anymore ;D
Truly a "wild one" from C. Mellon. ;D ;D ;D I lost my first one last week, not needed, but if things go really bad I know where to lay in a supply. :)
I super glue the spring and ball together. works for me ..... :-*
Quote from: WyoMan on May 18, 2016, 03:28:44 AM
The wildest one I've heard was from Charlie Mellon...he bought several pounds of #8 (iirc?) steel shot because he got tired of losing them. Read that somewhere awhile back. Said he doesn't bother looking for lost ones anymore ;D
I have a white, large-headed new shirt pin in my PC77. Works fine and even comes with a spring guide...
Nice! Like that idea too!
That is a good idea. :-* :-* :-*