ScottH":2tjt6hlr said:
hawkeye":2tjt6hlr said:
I assume you have the exploded SR9 parts diagram that came with the pistol and you're somewhat familiar with the inners of the SR9. With that said, I would check to see that item #43 Trigger Bar Lift Spring is installed correctly. When the gun is fired, this spring helps to force the trigger bar up to engage the striker tab when the slide returns after a shot. If for some reason the trigger bar doesn't engage the striker tab, the trigger will not reset.
Also make sure the ejector is pushed all the way up in the normal position. If it's not, the trigger may not reset properly. Hopefully this will help but it's hard to tell without actually looking at the pistol.
Check out the sticky that was posted by jhearne that illustrates how to disassemble the SR9. That might help to ID where you're problem might be. Hope this helps.
hawkeye,
Did as you suggested and everything looks as it should. With the slide off (and with and without an empty mag in place) I manually reset the trigger and the trigger bar lift spring looked to be in place and funtioning properly. With the gun fully assembled and the magazine out if I slowly cycle the slide I can see the bottom face of the extractor engaging the extension on the top of the trigger bar as it resets the trigger.
As the problem seems to happen mostly when there are only a few rounds left in the mag there must be some other dynamic involved that doesn't show up when trying to recreate the problem manually with an empty gun. Wish I knew what I did with my 9mm snap caps. I burned up the last 300 rounds of 9mm that I had in those two session the other day so the snap caps would be helpful right about now. I suspect that something isn't aligning right when the slide is returning to battery as it strips a round from the mag. Maybe the bottom of the extractor is slightly off and is sliding past the extention on the trigger bar.
Thanks for the suggestion though.
Anyone else feel free to chime in, and thanks in advance for any ideas on the subject.
Scott
Something with the Trigger Bar Reset or the ejector could be off....The Ejector has a path that the Trigger Bar moves back and forth in, and the Trigger Bar can ONLY (well it's designed to) work if the Ejector is up, and with a Magazine in place the Ejector should be up, everytime. If some of the holes in the ejector aren't right it could cause an issue with it resetting.
But I think the problem is more with the Trigger Bar Reset. If the Reset isn't made right it could fail to keep a reset. The Reset itself isn't just a part that sits at a right angle, it's a spring, it applies force away from the Fire Control Housing, it's kept from springing out too far by the Safety Levers. I'm no Gunsmith, but I'd like to think I know how the internals work with and around each other.
Proceed at your own risk!! If you are hesitant about proceeding do not feel bad,
call Ruger and have them take care of it, it's a legitamate problem that they CAN fix, mine is a guess at best, you won't hurt my feelings
.
To adjust the Reset if you feel up to the task, take your gun down per the
instruction in my sticky Hawkeye referred you to earlier and get your gun down to the Fire Control Housing assembly, push the Safety Lever Assembly to the bottom of the FCH and see how far the Reset is sprung out, it should spring out to some degree, if it sits very close to the Fire Control Housing, like there isn't hardly any spring to it then that could be why it's failing to reset. When you push the Safety Levers away from the FCH the detent plunger/spring should come out, maybe under force, do not loose these parts, they are small.
If the Reset is bent too far inwards you'll need to lift it and bend it out some. To bend it out some, remove the Reset and install it on the other side of the FCH, with the long end facing down and to the front as opposed to its original orientation of pointing up and to the rear of the FCH. Make sure that it sits secure in the FCH, and then GENTLY pry it away from the FCH, giving it a slightly larger degree of angle off the FCH. Remove the Reset and reinstall it where it belongs and reassemble the internals and the rest of the gun. You can bend it too far out, the reset will work but it may sound like it's resetting harder, or louder, you will probably have to repeat the process and bend it IN a little to find the sweet spot.
This pic is one I pulled from my How-To it shows the Reset on the FCH after the Levers were pulled down. The Reset springs away from the FCH just a bit, but it needs to in order to function properly. If you need me to let me know and I can go about getting you a better shot of what mine looks like from a better angle, would be after 5 today for me, got a few errands to run first.
If it resets every time afterwards but it feels as though it resets more noticeably then the Reset is bent too far outwards, repeat the above steps but bend it back inwards just a hair. If you don't think your capable or it doesn't do anything for the problem a return to Ruger will probably be what you'll need to fix the problem.
Josh