Need Center Pin for 66 4"

[Gearman]

Can anyone tell me where I can get a Center Pin for my 1972 S & W 66?

My old pin is worn on the end and can't push the locking bolt clear.

The part number is #7003 for the 3-15/16" pin, with the collar 27/32" from the short end.

 

[Alk8944]

A centerpin will not develop enough wear to affect unlocking the gun. Check the extractor rod to be sure it is tight first. Have you by chance replaced the extractor rod? Did this condition develop while you have owned the gun, or did you buy it this way?

Remove the cylinder from the gun and stand it upright on a smooth hard surface and push down to force the back end of the centerpin flush with the center bearing of the extractor. While holding it down check the front of the extractor rod, the end of the centerpin should be flush to a few thousandths above the extractor rod. If it is at all simply remove the extractor rod and trim the end enough that the centerpin will be just a bit longer, by .002-.005" and your opening problem will be gone.

Chances are, if the extractor rod is tight, that it has been replaced in the past and not fit properly. Most people seem to believe all you need to do is screw a new extractor rod into the gun and the job is done, it isn't, they have to be fit!

 

[Gearman]

Thanks for the help -
The gun was like this when I bought it, and I couldn't see how bad it was, or how to adjust it until you suggested standing the cylinder on a flat surface to push the end of the centerpin, so the alignment of the ends was visible.
The end of the centerpin was banged up and just short of the extractor rod, so I cleaned up the centerpin to make it flat and square, then took the extractor rod down just enough to leave it a few thousands short of the centerpin.
Put it all back, and it works perfectly, releases nice and clean and smoothly.
Thanks again !

 

[jgreiner]

Thanks for the help -
The gun was like this when I bought it, and I couldn't see how bad it was, or how to adjust it until you suggested standing the cylinder on a flat surface to push the end of the centerpin, so the alignment of the ends was visible.
The end of the centerpin was banged up and just short of the extractor rod, so I cleaned up the centerpin to make it flat and square, then took the extractor rod down just enough to leave it a few thousands short of the centerpin.
Put it all back, and it works perfectly, releases nice and clean and smoothly.
Thanks again !

Sounds like you have the same gun I do. They are one sweet shooting revolver.