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Thread: Pressing out barrel pin

  1. #1

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    Pressing out barrel pin

    How do you press out a barrel pin?

    I tried setting it up and to press out the pin but I could not get it to move. The trunnion and barrel keep wanting to turn even when clamped down. When it stops turning, the punch I am using to push the pin out with just deflects to the side and pops out and I have to reset up everything.

    Should I have it sent out to have the barrel pin pressed out?

  2. #2
    turmanator's Avatar
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    AK, I take it? Romy?
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    drine's Avatar
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    I understand this is for a PTR right? Cetme etc.. all the same. When I rebarreled mine, I set it in a drill press and drilled a small hole through the pin. You really don't have to go all the way through but more than half. This will let the walls give. I was able to use a punch at that point to get it out. I took a smaller diameter than the hole I drilled which gave it a nice place to hold and not slip either. I really did a lot of harm beating on mine to get it rebarreled but it didn't take much to get it back right. The less the better though. Do yourself a favor and soak the heck out of the pin and trunnion area with wd-40 or similar penetrating oil to help free things up. The longer the better.
    It always looks darkest.....just before it goes totally black.
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    Otis61's Avatar
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    Another thing that would help a lot is to make some kind of jig, or reciver wrench. Doesn't need to be hi-tech, or pretty. just hold it down.
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  5. #5
    turmanator's Avatar
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    Quote Originally Posted by turmanator View Post
    AK, I take it? Romy?
    Sorry, did not pay attention to what Forum you were in!
    Winchester M1 Carbine
    Arisaka Type 99
    Enfield No. 5 "Jungle Carbine"
    AMD65-M70B1-M70B2-Several Romy Gs
    CETME (under Const)
    Sten MK V & Sten MK II (under Const)
    PPSH 41 (under Const)
    Mosin Nagant M44
    Nagant Revolver-1911

  6. #6
    Senior Veteran bladeworks123's Avatar
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    I use a vise, 4mm pin punch and a 2lb brass hammer. Usually takes several healthy blows to get it to break loose. If this is not a de-mil, be sure to clamp the receiver only directly behind the pin, and not behind the trunnion.
    Likewise with pressing, make sure you only support under the trunnion so as not to tweak the receiver.
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  7. #7

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    It's on a parts kit so it's not welded into the receiver yet. I want to get it out so as to be able to press in the new barrel when it comes.

  8. #8
    drine's Avatar
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    As Sara Palin would say, "Drill baby, drill." Those pins have taken a lot of punishment from FA fire over the years. When you rebarrel, you'll want to set the gap to the high side because it will settle some. That settling makes it very tight.
    Is your cocking tube still attached? You don't want to ding it at all. If you've already got the tube seperated you don't have to worry about hurting anything, the trunnion is tough...within reason.
    It always looks darkest.....just before it goes totally black.
    COG# 11M1P

  9. #9
    Senior Veteran metrotps's Avatar
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    Quote Originally Posted by drine View Post
    I understand this is for a PTR right? Cetme etc.. all the same. When I rebarreled mine, I set it in a drill press and drilled a small hole through the pin. You really don't have to go all the way through but more than half. This will let the walls give. I was able to use a punch at that point to get it out. I took a smaller diameter than the hole I drilled which gave it a nice place to hold and not slip either. I really did a lot of harm beating on mine to get it rebarreled but it didn't take much to get it back right. The less the better though. Do yourself a favor and soak the heck out of the pin and trunnion area with wd-40 or similar penetrating oil to help free things up. The longer the better.
    As drine said "Do yourself a favor and soak the heck out of the pin and trunnion area" but use Kroil instead.
    http://www.kanolabs.com/
    Midway has it also:
    http://www.midwayusa.com/eproductpag...eitemid=137203
    Great stuff as it gets into the tiny spaces that WD40 and other oils cannot.
    Our Government, "If we didn't have mis-management we wouldn't have any management at all"

  10. #10
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    Drill the pin out halfway using a carbide bit, Then use a punch that will fit in the hole and hit it out

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