GTA
All Springer/NP/PCP Air Gun Discussion General => Air Gun Gate => Topic started by: Ferretti on September 19, 2018, 01:03:22 AM
-
Best way to remove a badly stripped breech screw on a Crosman 1322? Or any ideas on how to best remove a small stripped screw will work. Rubber band not viable, tapp the screw possible but difficult, find a smaller screw and screw it into the screw to unscrew another possible solution. Really just want to hear from people on what they have had the best luck with. Maybe a small amount of epoxy let it set for a day and turn it out?
Any ideas or ways to remove a small stripped screw would be greatly appreciated, specifically the famously dreadfully easy to strip breech screw. :?
It is badly stripped completely rounded out :)
Stupid little breech screw, I should have cut a deep groove for a flathead the first time I stripped it out but didn't like a fool :.(
-
I believe on this site I saw a suggestion to try bore paste or valve grinding compound in the stripped hole. That may give enough traction to remove it with a screwdriver.
I don't know what the area around the screw looks like but I've had pretty good success removing stripped flat head screws with a small chisel. Drive the chisel into the screw near the edge of the head, gradually tip it at an angle until you are driving in the correct direction to loosen the screw.
If you decide to screw a smaller screw into it get a left hand screw so tightening it will loosen the primary screw.
If you're really good you can weld an extension onto the screw then turn that out. You must be REALLY good and have top notch equipment but it CAN be done.
-
AHHhhh Yessss, the famous Crosman "pita breech screw". (been there, done that).
I have had good success getting it out by drilling with a bit just SLIGHTLY larger than the stripped out allen hole,
And just SLIGHTLY deeper than the stripped out allen hole.
This will allow you to use the shank of the drill bit to snap off the screw head.
Remove the breech.
There will be just BARELY enough of the screw (sticking out above the tube), to grab it with some GOOD Quality pliers and spin it out.
-
I think i will drill it out that sounds the easiest as i do have a spare luckily.
Thanks, anymore ideas?
-
Seems to me there is a torx bit that fits tightly into a stripped out allen hole in a breech screw
-
x2 on the Torx bit...been a while so I don’t remember the size but it’s probably in the vicinity of a T5. If you clamp across the breech and tube, that takes the load off the threads so it’s easy to back out. But yeah, just drill off the head if you have to.
Then go get a #4-48 x 1/4” to replace it...one that doesn’t have that Mickey Mouse 0.05 hex drive. Note the thread pitch is not the more common 40tpi, it’s really fine thread 48tpi.
-
I have a few of these and I use them all the time. They work great as the operate in reverse. Just be sure to use the right size as in the case of larger screws too small of an extractor can break. Worth having in your toolbox though.
-
as soon as i could i took this screw out and made a X to use a philips screwdriver. Never again i had the issue of the standard HEX setup.
When it happened to me i was about to install the GMAC steel breach LH, so i basicaly teared the plastic breech away with a rotary tool
-
Replace it with a MAP breech screw when you have taken it out.
https://onlinestore.magnumairpower.com/products/custom-breech-screw
This would not work on a Don Cothran breech though but The Man has his own star screw that go with his breech.
-
Drilling away and already cut a line in other screw so no more future problems with this. thanks again all great ideas.
-
WORKED OUT GREAT!!
SUPER EASY BEST WAY! #1 THANKS! ;D
AHHhhh Yessss, the famous Crosman "pita breech screw". (been there, done that).
I have had good success getting it out by drilling with a bit just SLIGHTLY larger than the stripped out allen hole,
And just SLIGHTLY deeper than the stripped out allen hole.
This will allow you to use the shank of the drill bit to snap off the screw head.
Remove the breech.
There will be just BARELY enough of the screw (sticking out above the tube), to grab it with some GOOD Quality pliers and spin it out.