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Posted: 10/6/2005 8:38:25 AM EDT
[#1]
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Posted: 10/6/2005 8:40:18 AM EDT
[#2]
Ive got an sks pin that is stuck. Just a hint, if the drill squeals, it's to hot, back off the pressure and get the contact point wet, and keep it that way to keep heat down.
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Posted: 10/7/2005 6:13:13 AM EDT
[#3]
Comon' some one else must have seen this. There is what appears to be a pin in the front trunion sticking into the barrel pin hole, whatever it is, it put a goodsize groove half the length of the barrel pin, if I knew how to post a pic. I could show you. I ran a small rat tail file thru the hole and it is so hard the file won't touch it.
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Posted: 10/7/2005 6:16:28 AM EDT
[#4]
I really don't understand the reference to the front sight having a pin going through that and into the trunion.
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Posted: 10/7/2005 9:11:30 AM EDT
[#5]
I'm a little lost here too. Has me concerned because I have a Romy kit I plan to build and if there's something weird going on that I don't know about, I'd really like to know what's going on before I wreck a perfectly good kit trying to knock the barrel pin out.
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Posted: 10/7/2005 9:29:52 AM EDT
[#6]
Well, that would explain a lot of the problems people have been having. More details on the location of the second pin would be helpful.
A friend has one that we gave up on. The barrel pin is still in it after trying everything we could think of. I'll ask him to take a look at it. |
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Posted: 10/7/2005 9:37:50 AM EDT
[#7]
Bob1984,
Don't be concerned, the fact is that there's several inches of nothing but barrel and air between the front sight and the trunion. |
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Posted: 10/7/2005 9:40:42 AM EDT
[#8]
Ozzy, get some penetrating oil and soak it the pin/trunion in it. For a long time. Then heat the trunion with a butane torch to pull the oil down in. Lots of people seem to be afraid to heat the trunion to get the pin out, but then go out and run the gun until the barrel is a dull red. Just don't get it hot enough to change the color at all. Then put it in a vise, and press on the pin with a short rod, get it good and tight then whack the vise with a hammer. The jolt normally breaks it free. |
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Posted: 10/7/2005 12:00:50 PM EDT
[#9]
Sorry, I edited my first post to say Rear sight. This pin is not coming from front sight, just from that area thru th front trunion. I drove the pin out and there is a groove in the pin about 1/8' deep, 1/2 the length, and you can see in the barrel pin hole that something is protruding in the hole. I have the Trunion off. If someone can post a pic for me I will try to take a pic of the pin with the groove. I don't know what would be so hard in the barrel pin hole to put this groove in the pin. This is my 3rd build and the other 2 pins came out easily.
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Posted: 10/7/2005 12:15:31 PM EDT
[#10]
I just took a pic of the pin, which turned out good and a pic of the hole which turned out pretty good but you still can see what I'm talking about. If someone would post them for me it would be a great help. This pin took 3 days to get out. we used a big hammer and a 1/4 drift, bent 2 drifts and broke one, then we got serious, went to a 3/16' drift about 10' long that I got from work and a sledge, the kind you use to break concrete an it came out. TIA
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Posted: 10/7/2005 1:47:29 PM EDT
[#11]
I can post them.
Sent you an IM. |
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Posted: 10/7/2005 3:33:15 PM EDT
[#12]
I'm new to this board but well established on a few others. I'm glad to join you.
Did you drill the pin off center? I did that to mine and it looked just like you describe. Since you drilled in about the same depth as you describe the depth of the gouge, it may be because of the drill. Just a thought. |
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Posted: 10/8/2005 10:27:29 AM EDT
[#13]
Here are GMAN12's pictures.
 
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Posted: 10/8/2005 11:41:44 AM EDT
[#14]
WOW, mine didn't look like that!!!
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Posted: 10/8/2005 12:15:16 PM EDT
[#15]
I've go a couple (?) to build and I HOPE (!!!) mine don't look like that either. Otherwise it's time to drill'em all out!
fuzzy_dba NC |
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Posted: 10/8/2005 6:24:58 PM EDT
[#16]
Mine looked like that, but lol 12 tons later it was out, I did have to drive the pin some then back then some then back, worked well will be trying the oil/ heat thing on the next one I prep.
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Posted: 10/9/2005 2:54:18 AM EDT
[#17]
Never saw that before. Looks like they pinned the the pin in place. The only reason I can think this would be done is, the barrel pin is undersized or the hole is over sized. The pin should be 7mm. The hole, slightly smaller.
Mike |
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Posted: 10/9/2005 4:49:42 AM EDT
[#18]
I've never seen this before, either, I have olly bult 2 other AK's and had no problems. Whatever is in that hole, it's really hard, I tried to use a regular ratfile and it just slid across, So I bought a chainsaw sharpening file and that got it out. Thanks for all of the help and thanks to Richard-ar-15 for posting the pics.
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Posted: 10/9/2005 8:24:54 AM EDT
[#19]
Toten Kopf posted pictures of a pin that looked just like that over on Gunco a couple of months ago. http://www.gunco.net/forums/showthread.php?t=13246&highlight=mother+barrel+pin
or search on the keywords: mother barrel pin |
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Posted: 10/9/2005 10:15:17 AM EDT
[#20]
The difference between the two pins is that GMAN12's pin starts to gouge from the center to one end. I think this is more indicative of a set pin, etc than Toten Kopf's which is galled from one end to another. TK's looks more like it was just very tight and displaced metal as it was pressed. Also, Totem Kopf does not say anything about pins protruding into the barrel pin hole. FWIW, I've just started to drill them out. I can't quite justify the purchase of a press for building only 4 kits (two completed, last two disassembled). Drilling makes them come out much easier. However a given pin would still be a bitch if secured by a retaining pin even if it was drilled. |
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Posted: 10/9/2005 2:47:51 PM EDT
[#21]
I bought a 3' length of 7mm drill rod from MSC for $ 3.12. I think I will just drill out the rest of the pins and not go thru the parts flying across the room and ducking any more!!!
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Posted: 10/9/2005 8:07:07 PM EDT
[#22]
Look again. The gall channel does not go from end to end. It ends in a rounded (pin shaped) impression about 2/3 of the way. The galling goes past half way because he tried pushing the pin one way, then reversed direction and pushed it out the other side. |
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Posted: 10/10/2005 6:13:49 PM EDT
[#23]
Are you sure the barrel pin was pinned in? I can't tell from that fuzzy pic what is going on. The second pin would have to be installed some way. Have you found the other end yet? Are you sure it's not just a piece of metal from the drilling process or the missing part of the barrel pin?
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Posted: 10/11/2005 6:54:13 AM EDT
[#24]
I still don't know what caused it, but the hole I drilled is perfectly straight and only about 1/2 thru the pin. I can't see the other end, but whatever it is, it took 3 days to get out.
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