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CMA · Posted: Wed Jul 28, 2010 1:18 am Post subject: Cylinder Turns in Frame

My son has a DAO Ruger SP101 chambered in 357 mag. When the cylinder in locked in the frame, the cylinder can be turned to the right (cloclwise). The cylinder cannot be turned to the left (counter clockwise). Does this have anythig to do with the fact that it is double action only?

I have several revolvers, but all are DA/SA. None has this issue.

Would the above issue be caused by a light spring or a worn part?

Thank you in advance for your replies.

Best regards.

flatgate · Posted: Wed Jul 28, 2010 7:33 am Post subject: Re: Cylinder Turns in Frame

CMA · Posted: Wed Jul 28, 2010 8:47 am Post subject:

Thank you for the reply sir.

I'll need to get working on a fix.

Best regards.

rugerguy · Posted: Wed Jul 28, 2010 7:37 pm Post subject:

may just be put together 'wrong' and the spring not keeping 'pressure' on the latch ( bolt, cyl. stop..) in the upward position, into the cylinder notch.........
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Dan

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CMA · Posted: Sun Aug 01, 2010 12:33 am Post subject:

rugerguy I think you were right.

I finally had some time to take the Ruger apart this weekend. I checked all the parts for wear and/or damage. Everything looked good. I smoothed everything up a bit and put it back together. The cylinder locks up tight now. Maybe a previous owner put it together wrong. I don't know, but all is well now.

Thank you for your input.

Best regards.

Carry_Up · Bearcat Joined: 22 Dec 2007 Posts: 75 Location: Seattle

Lots of things can be fixed by having a close look first. I would really want to focus on the cylinder latch and why it was not moving into position. Not knowing why it was stuck makes me nervous. The latch might be stuck, but also the cylinder might not move far enough to let the latch work - pointing to a problem with the pawl or cylinder ratchet.

With a new product, you can be 99% certain the problem is sharp edges, metal shavings, burrs, etc. Smoothing up those unfinished parts is usually a necessary first step. A good way to isolate that problem would be to remove the hammer and operate the trigger and cylinder. Then open the cylinder and operate the trigger, observing the cylinder latch and checking it for roughness. Finally a timing check - the cylinder latch must click into place before the hammer falls on all 5 chambers. Its not fixed until you know what was broken.

Carry_Up
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Carry_Up · Bearcat Joined: 22 Dec 2007 Posts: 75 Location: Seattle

Some additional thoughts on this potentially dangerous problem - have you test fired the gun to see if everything works? A new cylinder latch will NOT be fitted tightly for very good reasons. A little play in the (locked) cylinder allows it to self-align with the barrel. The latch can hang up in the window, if the window has not been deburred - something I have found to be typical. Problem waiting to happen again.

The lower part of the latch may have a sharp edge or another part in the trigger group could be affecting it...which would be obvious by removing the trigger group and examining the latch movement. Not everything is a simple fix, that's why I encouraged to OP to make certain why it was happening.

carry_up
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"My men are not expendable."