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Dans Club
December 4, 2011
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I want to put new springs in one of my Supermags but I've never removed a mainspring seat. It appears to be staked in place. What tool do you use and what's the method to get it out/back in?
Anything worth doing is worth doing well.
My father
If a man designed it, and a man built it, then a man can fix it.
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Dans Club
March 25, 2013
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Why would you want to remove a mainspring seat? No sideplate screws though. How do you capture a large frame mainspring to remove it?
October 26, 2008
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Remove the spring and guide out the top where you take the hammer out.
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February 22, 2009
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Right- no reason to remove the main spring seat. Just unscrew the long side plate screw from the bottom of the main spring guide and Bob's your uncle!
Ron- the hole that I've pointed out is where the screw resides on the 740 I have disassembled.
Technically, the glass is always full; half liquid, half air....
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December 4, 2011
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Let me expand a bit.
I was shooting this 375 today and I was getting alot of light strikes with failure to fire, in both single and double action. It wasn't the grip screw. While cleaning the gun, I noticed the main spring seat had backed out about 3 threads, despite the fact somebody staked it in place several places. I think this was the cause of my light strikes.
I'd like to replace the seat as the threads on the end are rough and marred by staking. I figure to replace the spring while I'm at it.
I plan to use some Loktite when I reinstall the new seat. I just don't know how to screw the new seat in as it has no flats, or screw slot.
Anything worth doing is worth doing well.
My father
If a man designed it, and a man built it, then a man can fix it.
My grandfather
October 26, 2008
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You could bottom out the grip screw or use a shorter screw with the same thread or get a nut and tighten it down on the new plug to install the new one. I’d find a nut if it were me and the new plug didn’t screw in by hand for some reason. Cleaning up the threads on the frame if needed with the proper size tap would be the best way. Then the plug would/should screw in by hand. I’d do the loctite and still stake it.
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December 4, 2011
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I like the jamb nut idea Superdan.
Just so I understand, remove the hammer, pull out the spring and guide pin, then remove old seat, chase the threads and install a new one with a screw and jamb nut with loctite and stake. Then reinstall the guide rod, spring and rest of internals.
Seems straight forward enough.
Anything worth doing is worth doing well.
My father
If a man designed it, and a man built it, then a man can fix it.
My grandfather
October 26, 2008
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Sounds like a plan. The chasing is only necessary if the threads on the frame are damaged (still have the old staking remnants). Watch your eyes when installing the spring and guide. Find something that goes over the end so that it doesn’t slip off then get the small screw engaged in it to capture. A hollow rod, drilled out wood dowel or maybe a small universal screwdriver without the bit might work.
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March 25, 2013
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I have a cleaning rod, with hollow end dedicated to the task of holding down the main spring guide until the spring is captured. Or removed, whichever you are doing.
February 16, 2016
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Ole Dog said
I have a cleaning rod, with hollow end dedicated to the task of holding down the main spring guide until the spring is captured. Or removed, whichever you are doing.
.. and it works great too.
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