S&W crane endshake

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Arrr...

Installing a yoke bearing WILL create cylinder endshake.
Aye, I did not consider that thoroughly and failed to put emphasis on correcting the consequent cylinder endshake. My bad.

Depending on the diameter of the bearing surface(the part that rides in the retention slot on the yoke) on the #2 screw, the bearing surface on the yoke button will likely require refitting as well. It might screw in just fine with the yoke closed, but then it would be impossible to open the gun with normal pressure--which would require filing the slot to obtain proper fit.
10-4 :)

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Daizee, that sounds plausable to me.
Good pics by the way.

If there is no play in the yoke when it's open when using the standard yoke screw, it sounds like it will definitely need material removal from the yoke screw slot regardless of the method employed.

Are you comfortable doing the work yourself?

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no, I'm not.
but if I think about it long enough I will be.

I'll get some of those oversize screws before I start beating on things that are expensive to replace.

-Daizee
 
Peening the yoke botton is a easy, operation, you will want a fine narrow file to finish the job. A smooth faced machinest hammer 8-10 oz.
Often you won't have to remove any metal if you peen and check often.
Your striking downward, on the edge of the botton while it is pointing upwards.
 
d'oh!
are they going to send the right ones?

I'm going to have to delay the endshake removal. My 1911 just threw a rod and the Model-10 is my only remaining plausible IDPA-legal gun. harumph.

When I start whacking on the thing I'll send post the results to this thread.
Sylvan, if you get the right screws, can you post the dims?

-Daizee
 
Daizee, these very well could be the right screws for your gun.
The part number is 05049 on the baggy and 050490701 on the packing list.
I checked that number against S&W's RevPartsList_Retail.pdf and found that it's called an endshake screw (also listed is the yoke screw) for the model 10. I presume I was supposed to get yoke screw assemblies since I have a 10-14 and the screws have a little spring loaded guide inside 'em.

The screws that were sent measure as follows:
Overall length 0.365"
Thread diameter 0.123"
Pilot diameter 0.103 & 0.104"

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Anyhow, if you think they might work, pm me with your address and I'll send them to you to test out.

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ooh, ok.
maybe we'll make some lemonade...

I'll calip my screws again and post the numbers for comparison.

-Daizee
 
Sylvan, here are my yoke screw measurements. Sorry it took so long.

OAL: 0.371
Thread diameter: 0.120 (though the threads aren't sharp anymore)
Pilot diameter: 0.097

So it looks like the pilot on your screws is several thousandths thicker.
That seems consistent with an oversize yoke screw for a 10-8.

-Daizee
 
So Sylvan's screws arrived today and I just checked 'em out against the gun. I got the camera out and everything, but what really is there to see?

Sure enough, the pilot on the screw I pulled from the bag calip'd at 0.104, several thousandths thicker than mine.

I popped the old screw out, the new one in, and lo and behold, I could feel some resistance while tightening it. In fact, I decided it would be clever to tighten the screw with the cylinder open so that it would be less likely to drive metal off of the yoke button where the screw holds it tight in the closed position.

Voila! No more yoke endshake. Tho it turns out that I can tighten the screw to the point where the cylinder doesn't open! hm. So the snugness will probably keep it in without driving it down all the way. Some locktite might be a good idea, tho that will be irritating come cleaning time. For now I'm going to give the gun a go - maybe next weekend's IDPA. My usual centerfire range is closed for the season.

This seems like a super-easy fix for a gun with a worn yoke button, and now looking at it closely, and dragging a fine tool across its bearing surface, I can see that it is indeed worn. The long-term fix is clearly to either replace (eek!) the yoke or to do the poundy fix to peen it back into a better position. But for speed, cost, and risk, these oversize screws are hard to beat.

All I did was swap a screw, but I learned a ton!
Thanks, Sylvan!! I'll send the other two screws back to you in the baggie.

-Daizee
 
Peen the screw?

Just a idea, I wonder if peening the unthreaded end of the screw would be possible to remove end play. Screws are much less in cost then a yoke.
 
wondered that myself. tho one might disturb the thread/frame relationship.
 
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