Early (I think) Heavy Duty

[marinevet]

Am I correct that S&W pins have a taper, and can only be removed from one side of the revolver..........

 

[steelslaver]

nope, they are straight and can be removed from either direction

 

[Alk8944]

Thank you all for the great responses and knowledge! This evening I’ll check the butt of the frame to see if that SN matches the barrel.

Currently, BC gap w/ out endshake shims installed is .0085”.

I have Loctite 680 on hand (green “bearing mount” as we call it), how does it compare to 620/ 640 for this application?

Also, is removing the barrel pin just a matter of pin punch & a small hammer? Thanks again!

With that B-C gap the end shake will be somewhat less. What is critical is that the cylinder does not rub against the barrel shank.


About the Loc-Tite Bearing Mount read the PM I have sent you.


Barrel pins are often loose enough that they can simply be pushed out, try that first! If you need a punch a .050" cup tip punch is correct. Pin diameter is .055"

 

[4K2022]

The barrel pin on S&W revolvers is .050. You need a short cupped one to start it and a long one to finish driving it out. cupped punches are expensive. I turn the ends of nail set punches down

On an older gun I would soak it in penetrating oil for a while as the pins can be hard to start.

“nail set punches” ??? I bet most folks never heard of such a device. The “hard to start part” is important, imo the first tappy tap tap especially

 

[steelslaver]

I have never actually measured a factory pin, nor had one come out just pushing on it. If I don't have an original pin I start out with a piece of 1/16" tig carbon steel wire (70S) and turn it down using a drill and a fine file until it starts in the hole, then cut it to slightly over length before rounding the ends running against a slack piece of fine emery cloth. If the pin is a bit loose, just put a tiny bend in it. It actually does not really do anything. If the barrel does not torque up properly you can stick the pin in and still easily rotate the barrel several degrees in either direction

That is why the OPs barrel has rotated even with the PIN

 

[rct269]

Just in case you hadn't noticed, "steelslaver" is one of those REAL been there and done that folks---and done that no matter what that is---and is not the least bit put off by the fact he may very well have never done it before, and may very well not have the first clue about how to proceed.

At that point, I reckon he sits and stares for a bit---and then just does it---and it works!!

And those "hockey pucks" he mentions are known as bench blocks----when they're store bought--although he probably makes his own, and ends up with EXACTLY what he wants for any particular task--just because he enjoys the challenge---being one of those long gone and rare breeds who finds a way---to do anything!!

Ralph Tremaine