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Old 02-04-2020, 11:21 PM
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Default L frame: offset hammer?

Hey all,
I recently picked up a 686-4, and haven't even fired it yet.
It seems like the hammer is offset, and a slight bit of rubbing wear can be seen on the hammer.
It's offset to the right side (sideplate side).
Just curious why a hammer would be offset, and if it really matters?
Thanks for any help and opinions
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Old 02-04-2020, 11:35 PM
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The hammer rides between two "bosses" located on the sideplate and at the base of the hammer stud. There is often some minor and incidental misalignment of the hammer on the stud between the plate and the frame boss.

If this misalignment interferes with the travel of the hammer to it's destination, then you should seek assistance from the techs at the factory. Shims are also available, if deemed necessary.
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Last edited by armorer951; 02-04-2020 at 11:47 PM.
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Old 02-04-2020, 11:48 PM
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Thanks. When cycling the action with snap caps in the cylinder chambers, all seems to be in order. I'll get a chance to put rounds through it this weekend, but... largely just a slight misalignment of hammer, correct? Can't see that it'll be a prob, just curious as to cause. Thanks for your explanation!
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Old 02-05-2020, 11:38 AM
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I have had a couple over the years that will show just a "slight" rub mark, and had no affect on operation. If it shows a more concentrated rub marks, you should take care of it. A shim of .002 would open up the area more than sufficient amount. Also, don't forget to lube the internals from time to time.
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Old 02-05-2020, 12:28 PM
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Also look on your side plate where the arc mark is and see if there may be a tiny bur there.
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Old 02-07-2020, 11:29 AM
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Many properly functioning S&W wheelies have this gentle rub on the right side of the hammer. Many are also owned by right-handed shooters, many of whom cock the hammer with their right thumb, exerting a slight rightways pressure to the hammer as it's cocked.
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