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GP 100 cylinder not closing

This is a discussion on GP 100 cylinder not closing within the Gunsmithing forums, part of the Firearm Forum category; Folks- looking for some help. Just got back from an IDPA match and was cleaning my GP. Didn't do a full field strip, only cleaned ...


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Old April 22nd, 2017, 02:38 PM   #1
 
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GP 100 cylinder not closing

Folks- looking for some help. Just got back from an IDPA match and was cleaning my GP. Didn't do a full field strip, only cleaned the gun fully assembled.

When I tried to close the cylinder, it wouldn't close and it will only rotate in one direction, binds in the other.

I can't see any obvious issues with the crane, ejector rod, but I'm not an experienced gunsmith.

Any ideas? Would prefer to fix at home, especially if it's simple rather than send it to the mother ship.

Thanks in advance



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Old April 22nd, 2017, 03:24 PM   #2
 
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Make sure the ejector rod hasn't come loose and backed out. Remenber it is reversed threaded. Only suggestion I have. I will be watching this thread.
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Old April 22nd, 2017, 03:27 PM   #3
 
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Quote:
Originally Posted by Dazzels Owner View Post
Folks- looking for some help. Just got back from an IDPA match and was cleaning my GP. Didn't do a full field strip, only cleaned the gun fully assembled.

When I tried to close the cylinder, it wouldn't close and it will only rotate in one direction, binds in the other.

I can't see any obvious issues with the crane, ejector rod, but I'm not an experienced gunsmith.

Any ideas? Would prefer to fix at home, especially if it's simple rather than send it to the mother ship.

Thanks in advance
1. clean cylinder,
2. raise star ejector and toothbrush all around.
3. and like the other responder take the ejector rod out and reassemble.
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Old April 22nd, 2017, 03:51 PM   #4
 
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Make sure the ejector rod hasn't come loose and backed out. Remenber it is reversed threaded. Only suggestion I have. I will be watching this thread.
I looked at a you tube on diassemembling the cylinder assembly & didn't see anything about screwing the ejector rod. Is that after the crane is removed?

The you tube mentioned a special too is required for the ejector after the crane is removed- do I need that to tighten the ejector rod?
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Old April 22nd, 2017, 03:58 PM   #5
 
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Yup, make sure the casing ejector is flush with the cylinder so it will close and lock. You could also try applying some CLP (Breakfree) to the notch for the ejector rod in the crane to dissolve and lube the ejector rod of what's binding it. The cylinder when in the open position should rotate in either direction.
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Old April 22nd, 2017, 05:09 PM   #6
 
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Originally Posted by Bud0505 View Post
Make sure the ejector rod hasn't come loose and backed out. Remenber it is reversed threaded. Only suggestion I have. I will be watching this thread.
There are no threads on a GP100 ejector rod...
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Old April 23rd, 2017, 10:44 AM   #7
 
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So disassembled the crane, a spring (extractor spring my guess) came out of the cylinder with the crane, not right. So off to mothership it goes.

Really like this gun
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Old April 23rd, 2017, 12:40 PM   #8
 
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you will have your gun back in no time and you will love it even more.
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Old April 23rd, 2017, 12:51 PM   #9
 
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Originally Posted by Dazzels Owner View Post
So disassembled the crane, a spring (extractor spring my guess) came out of the cylinder with the crane, not right. So off to mothership it goes.

Really like this gun
How far did you disassemble the crane?
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Old April 23rd, 2017, 02:08 PM   #10
 
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Here is an excellent video on disassembly of the GP100.

Sent from my XT1060 using Tapatalk
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Old April 23rd, 2017, 02:43 PM   #11
 
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YouTube video code q4nJRKFN1CU

Sent from my XT1060 using Tapatalk
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Old April 23rd, 2017, 07:46 PM   #12
 
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Originally Posted by firescout View Post
How far did you disassemble the crane?
To the point of removing the crane from the cylinder, and yes I followed the you tube exactly. I suspect there was a fault with the spring & likely "centerness" of the the extractor rod/ crane.
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Old April 23rd, 2017, 10:58 PM   #13
 
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To the point of removing the crane from the cylinder, and yes I followed the you tube exactly. I suspect there was a fault with the spring & likely "centerness" of the the extractor rod/ crane.
Well, there's supposed to be a coil spring in there.
Unless the spring appeared to be 'tweaked' (bent), I'd be inclined to throughly clean all the parts and inside the cylinder central bore, lightly lube, and reassemble the crane unit. I would then check for proper function. Quite often, a good cleaning restores proper function to a DA revolver.

I hope you're not incurring any costs in having it serviced by Ruger.
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Old April 24th, 2017, 04:51 PM   #14
 
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It's off to the mothership as I write this. Ruger CS was very nice on the phone, no quibbling or assigning blame, all very professional, as I expected. They provided me a prepaid FedEx label.

Will advise when it returns

Thanks to all for thoughts/ ideas and guidance.
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Old April 24th, 2017, 06:53 PM   #15
 
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OK, Ruger will take care of you.

For future reference, there's a nut inside the yoke that secures the extractor (star) to the cylinder. It has a screwdriver slot that allows it to be removed/installed with a special bit. There's a pin that protrudes through that nut and the special bit has a center hole that allows the bit to slide over that pin. Without that bit or some other appropriate tool, it's nearly impossible to remove the extractor.

So sending the gun to Ruger is a good solution.
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