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View Full Version : My Romy barrel pin debacle...


morepoop4u
03-04-2006, 10:49 PM
This pin is kicking my butt. I put it in the press and it buckled everything I put in there. I tried the milled grade 8 bolt and that failed. Then I tried the drill bit shank and it spit it back at me.

http://img70.imageshack.us/img70/7168/bit4pi.jpg

I frozed it, soaked it, torched it...nada. I tried pookies method and nothing happened http://pookieweb.dyndns.org:61129/AK/docs/construction/barrel_pin.htm. I gave it some love taps on both sides then wailed on it to only get a couple of bruises and mushroomed punch.

http://img70.imageshack.us/img70/2081/punch4cd.jpg

I finally said F it and decided to drill it to releive some pressure and punch it out. You would think that would do it but I don't have that kind of luck:mad: I eventually ended up using a 1/4" bit and carefully drilled the pin with the intent of chiseling out the left overs. That didn't work, so I'm at this point

http://img70.imageshack.us/img70/1795/pin9hr.jpg


Which drill bit should I get to redrill the hole 6.9mm or a 7mm. Also is it necessary to get a reamer and since the barrel has not been moved is the headspacing still intact?

shopkeep
03-04-2006, 11:22 PM
My hat is truely tipped to the master garage gunsmiths in Calguns building AKs. They are NOT easy to build and the parts are pretty gun specific.

morepoop4u
03-04-2006, 11:32 PM
U drives are sounding more appealing to me for the front 4 trunion rivets:p

dwtt
03-04-2006, 11:41 PM
I dont' know how to remove the barrel pin since I only tried to hammer mine out and it didn't budge. I haven't drilled it out like you did, but instead am thinking of leaving it in place. I'm thinking, the only reason I need to take the barrel off is to get out those 4 rivets in the trunnion outside the barrel. But if I can drill out the trunnion mounting rivets without damaging the barrel, I can just use u-drive screws without taking out the barrel. Of course this means I'll have to sneak my barrel and trunnion into work on a weekend to use the mill and hope noone finds out.
Have you considered going this route? Drilling out the 4 trunnion rivets to a depth of 0.175" and using u-drive screws, leaving the barrel and barrel pin in place?

morepoop4u
03-04-2006, 11:46 PM
I dont' know how to remove the barrel pin since I only tried to hammer mine out and it didn't budge. I haven't drilled it out like you did, but instead am thinking of leaving it in place. I'm thinking, the only reason I need to take the barrel off is to get out those 4 rivets in the trunnion outside the barrel. But if I can drill out the trunnion mounting rivets without damaging the barrel, I can just use u-drive screws without taking out the barrel. Of course this means I'll have to sneak my barrel and trunnion into work on a weekend to use the mill and hope noone finds out.
Have you considered going this route? Drilling out the 4 trunnion rivets to a depth of 0.175" and using u-drive screws, leaving the barrel and barrel pin in place?

That's my plan B if it turns out to be FUBAR:eek:

morepoop4u
03-05-2006, 3:20 AM
Some more defeated bits.:(

http://img84.imageshack.us/img84/4851/tools1vr.jpg

I also tried a jackhammer spike to shock it loose while laying it on a steel plate on the ground but all my effort were futile. Demilling everything was easy except for this blasted pin. I still have 2 more kits to go:eek:

ady
03-05-2006, 8:17 AM
Some more defeated bits.:(

http://img84.imageshack.us/img84/4851/tools1vr.jpg

I also tried a jackhammer spike to shock it loose while laying it on a steel plate on the ground but all my effort were futile. Demilling everything was easy except for this blasted pin. I still have 2 more kits to go:eek:

pin should removed from right to left. Use a steel roller bearing on the pin.But i think it is too late for that now.

wayoutwest
03-05-2006, 9:30 AM
Some of those pins can be a bitc__, so is the hole now oversized or is the pin just mushroomed, you can always get a new pin, global trades should have them. If you drilled it out and its now oversized, I am not sure what to tell you.

glen avon
03-05-2006, 10:32 AM
at this point you need to cut the pin shell. two ways to do it. dremel and a sharp diamond point, or a coping saw. go slowly, and you will be able to tell when you get thru the pin wall. now, cut another section 90 to 180 degrees away, and remove the remnants.