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December 1, 2017
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Hello,
I just did a deep cleaning of my model 15 and then took it to the range. After putting about 40 round through it I was unable to cock the hammer to put it in single action. I can pull the trigger and double action works just fine. ÂÂ
I pulled the plate back off the frame and I'm trying to figure out what gives. ÂÂ
I freely admit to being a newbie with revolvers.ÂÂ
What part of the mechanism is supposed to keep the hammer cocked?
October 1, 2012
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It can be as simple as having the grip screw too far in. Assemble the gun and check the action without a grip installed to check for this issue. Read " grip screw function" towards the top of forum topics to explain  Good luck
December 1, 2017
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It does look like it's a problem between the main spring and the hammer assembly. Removing the main spring allows me to cock it. I coincidentally have Wolf springs arriving tomorrow. Will see if that fixes it...
Dans Club
January 17, 2015
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I had a similar issue once and it turned out that the Aligning Screw had backed itself out a bit, then a bit more, then eventually fell out. If it isn't the grip screw, pull the side plate and have a look.
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https://www.danwessonforum.com/wp-content/manuals/dw_drawings.pdf
December 1, 2017
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It was the main spring seat. When I was changing grips the seat got screwed in deeper.ÂÂ
My take away is that when I change grips I need to unload the revolver and have the hammer cocked. That should stop the seat from moving...
Dans Club
December 5, 2008
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Adjust the mainspring seat to the best position and use Loctite to keep it there.
Worked for me.
October 1, 2012
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The mainspring seat usually has about 1 to 1 1/2 threads showing. Agree with Snake-eye to use red loctite or use a punch and peen it in place. Glad the problem is resolved for you.
Hugelk
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