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Old September 22, 2012, 01:47 PM   #1
lel
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How to remove pistol "insert" pins

I'm replacing the backstrap on a S&W 639 9mm square trigger guard/all SS (houses the mainspring as on a 1911). The insert pin at the heal is rounded on one end, the other end is flat. So, which end do I hit with punch and hammer? Is there a correct direction I should be moving the pin? Should pin be removed in opposite direction as installed, or can I just drive it right on through?
Don't want to break this little sweety, it's one of my favorites.
I've dis-assembled 1911's before, replacing triggers and mainsprings, but never a S&W 639 - the three little thingies under the slide and the thought of them laying the bench have always frightened me.
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Last edited by lel; September 22, 2012 at 02:10 PM. Reason: a 639, not 629
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Old September 22, 2012, 01:58 PM   #2
Sarge
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The 629 is a stainless .44 revolver, so I'm guessing you meant 639. I'm not personally familiar with the tear-down for that model so I'll suggest you do what I do in these cases- beat the internet to death for schematics, disassembly instructions etc. Then again, someone may be along shortly who knows exactly how to go about it.
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Old September 22, 2012, 02:25 PM   #3
lel
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Yes a 639, and a fat finger.
I've have the schematic, but no indication of insert/remove direction. I'm searching for instructions now, nothing found so far. It must be so simple and easy no one has asked before. I suspect I should drive pin from the flat end. The rounded end is likely rounded to help it past the mainspring plunger which will seat in center of pin once in place. I worry that the hole on one side may be smaller than the other. I can't recall which end I drove on the 1911 some years ago.
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Where is it written a man shall have but one gun?
Though our WANTS are many, A man NEEDS few things, A loin cloth and a knife come to mind, and I'm not so sure about the loin cloth.
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Old September 22, 2012, 05:16 PM   #4
C/O
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I am not positive, but when in doubt I always go left to right for removal and right to left for replacement.
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Old September 23, 2012, 08:45 PM   #5
rodfac
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Good replay, C/O, and will work on most anything I've had experience with...except Sig front sights, which are exactly opposite (out to the left, in from the left). Rod
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Old September 24, 2012, 12:44 AM   #6
cheezhed
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When you knock a pin out put the drift pin on the flat side and when you put a pin in the radius side should go into the hole and once again the drift pin should go against the flat side.
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