Romy pins - problem solved

raeldridge · 01-14-2006, 06:55 PM

ok, I did some bragging on myself in this thread:

http://www.akfiles.com/forums/showthread.php?t=10011

where I popped the pins in two kits in the space of a couple of minutes.

I've been wondering it this was just a stroke of luck, or were we on to something here that works.

my son and I did five more this evening to help out someone else. we took more time in unbagging everthing, pulling the top and bottom forearm wood and putting it all back together, than in the time in punching out the five pins.

I wasn't so sure before, but this looks like the 100% method that will work.

tools:
six inch bench vise
no-mar front trunnion holders made from pieces of a plastic cutting board
eight to twelve inch punch. this one is a air hammer bit I got surplus
three to five pound hammer

I suspect that you could use a piece of ground down twelve inch by half inch rebar for the punch, although I would hold out for something heavier if possible.

put receiver in vise, center the punch on the trunnion pin and use firm whacks.

four of the kits I had yielded immediately. one kit was stubborn, I was hitting the pin so hard we were moving the (200 lbs, plus!) table. we couldn't move it left to right, so we flipped to punch it the other way, it popped after a couple more whacks.

all the pins are still good, minor galling that will polish right out.

I guess the hydraulic press's will work, but a lot of folks more expert than I talk about 'shocking' the pin - that appears to be the reliable method. the guys with the airtools seem to have it right.

pictures of my tools in the other posting. just wanted to share the info that seems to work for me.

ProGunOne · 01-21-2006, 10:32 PM

You have bragging rights on this one bud. I used this method at work today with two pieces of hardwood instead of the plastic cutting board. I used a long Craftsman tapered punch with a four pound sledge and it worked like a charm. Knocked out four Romy pins in about eight to ten minutes of which was mostly spent removing and installing the next barrel assembly. I tried the twelve ton press in my brother-in-laws shop and it didn't do the job? Thanks for the post. Paul.

01-14-2006, 06:55 PM	#1
raeldridge Member Bronze Contributor AKaholic #: 697 Join Date: Nov 2003 Posts: 147	Romy pins - problem solved ok, I did some bragging on myself in this thread: http://www.akfiles.com/forums/showthread.php?t=10011 where I popped the pins in two kits in the space of a couple of minutes. I've been wondering it this was just a stroke of luck, or were we on to something here that works. my son and I did five more this evening to help out someone else. we took more time in unbagging everthing, pulling the top and bottom forearm wood and putting it all back together, than in the time in punching out the five pins. I wasn't so sure before, but this looks like the 100% method that will work. tools: six inch bench vise no-mar front trunnion holders made from pieces of a plastic cutting board eight to twelve inch punch. this one is a air hammer bit I got surplus three to five pound hammer I suspect that you could use a piece of ground down twelve inch by half inch rebar for the punch, although I would hold out for something heavier if possible. put receiver in vise, center the punch on the trunnion pin and use firm whacks. four of the kits I had yielded immediately. one kit was stubborn, I was hitting the pin so hard we were moving the (200 lbs, plus!) table. we couldn't move it left to right, so we flipped to punch it the other way, it popped after a couple more whacks. all the pins are still good, minor galling that will polish right out. I guess the hydraulic press's will work, but a lot of folks more expert than I talk about 'shocking' the pin - that appears to be the reliable method. the guys with the airtools seem to have it right. pictures of my tools in the other posting. just wanted to share the info that seems to work for me. __________________ "You wanna dance? Well, then, let's dance." Sgt. R. Gregory "I don't get mad if I just have to waste time gettin' over it." T. Caldwell "You may find me one day dead in a ditch somewhere. But by God, you'll find me in a pile of brass." Tpr. M. Padgett

01-21-2006, 10:32 PM	#2
ProGunOne Member AKaholic #: 4983 Join Date: Dec 2005 Location: Illinois Posts: 255	You have bragging rights on this one bud. I used this method at work today with two pieces of hardwood instead of the plastic cutting board. I used a long Craftsman tapered punch with a four pound sledge and it worked like a charm. Knocked out four Romy pins in about eight to ten minutes of which was mostly spent removing and installing the next barrel assembly. I tried the twelve ton press in my brother-in-laws shop and it didn't do the job? Thanks for the post. Paul. __________________ FALaholic # 3332 Last edited by ProGunOne; 01-24-2006 at 05:32 PM.

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