smith and wesson model 19 cylinder locked up

C50 · 06-22-2010, 07:44 AM

Ive got a model 19-4 that for a lack better term locks up. when i try to cock the hammer the cylinder wont turn and the gun wont cock. same thing when i try to pull the trigger. it will cycle fine however if i grab the cylinder and try to turn it the opposite direction first. it doesn't move any in the clockwise directon when i do this but its almost as if this is just enough to free what ever may be in a bind. i have opened her up but can not find anything that looks worn or broken. i hope this makes sense to someone out there. please help.

JohnnyT · 06-22-2010, 12:36 PM

Sounds like the cylinder stop bolt isn't dropping into the frame, or at least isn't dropping far enough or soon enough to let the cylinder turn. By reversing the cylinder, and having it work, my best guess is that it's not dropping early enough.

Check to see if it's broken.

Swing the cylinder out and manually hold the cylinder release latch as far rearward as it will go, and cock the hammer while observing the stop bolt. It should drop slightly below flush with the frame. If it does, there's a problem with the timing and will need the attention of a revolver smith.

If it doesn't drop below flush, the nose is likely broken off the trigger or the stop bolt, and it will need to be replaced...and there's a good chance that the bolt will also require fitting.

Whatever you do...DON"T cycle the action with the sideplate off without backing the mainspring strain screw out far enough to take tension off the mainspring.

C50 · 06-23-2010, 03:37 PM

problem fixed. turned out to be a worn cylinder stop spring. easy fix.

JohnnyT · 06-24-2010, 01:51 PM

That's odd. A worn bolt spring would be more likely to fail to reset the bolt and lock the cylinder in battery instead of preventing it from releasing..unless it collapsed and somehow jammed up the bolt.

C50 · 06-29-2010, 06:51 PM

it looked like someone had taken the gun apart in the past and didnt fully compress the spring when they put it back in. it had a bit of a kink in it. i almost missed it and was ready to send it to s&w but i noticed it and swapped it out and now it works like a champ.

06-22-2010, 07:44 AM	#1
C50 Junior Member Join Date: Jun 2010 Location: hartselle, al Posts: 4	locked up model 19-4 Ive got a model 19-4 that for a lack better term locks up. when i try to cock the hammer the cylinder wont turn and the gun wont cock. same thing when i try to pull the trigger. it will cycle fine however if i grab the cylinder and try to turn it the opposite direction first. it doesn't move any in the clockwise directon when i do this but its almost as if this is just enough to free what ever may be in a bind. i have opened her up but can not find anything that looks worn or broken. i hope this makes sense to someone out there. please help.

06-22-2010, 12:36 PM	#2
JohnnyT Senior Member Join Date: Apr 2010 Location: North Carolina Posts: 724	Sounds like the cylinder stop bolt isn't dropping into the frame, or at least isn't dropping far enough or soon enough to let the cylinder turn. By reversing the cylinder, and having it work, my best guess is that it's not dropping early enough. Check to see if it's broken. Swing the cylinder out and manually hold the cylinder release latch as far rearward as it will go, and cock the hammer while observing the stop bolt. It should drop slightly below flush with the frame. If it does, there's a problem with the timing and will need the attention of a revolver smith. If it doesn't drop below flush, the nose is likely broken off the trigger or the stop bolt, and it will need to be replaced...and there's a good chance that the bolt will also require fitting. Whatever you do...DON"T cycle the action with the sideplate off without backing the mainspring strain screw out far enough to take tension off the mainspring. Last edited by JohnnyT; 06-24-2010 at 03:24 PM.

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06-23-2010, 03:37 PM	#3
C50 Junior Member Join Date: Jun 2010 Location: hartselle, al Posts: 4	problem fixed. turned out to be a worn cylinder stop spring. easy fix.

06-24-2010, 01:51 PM	#4
JohnnyT Senior Member Join Date: Apr 2010 Location: North Carolina Posts: 724	That's odd. A worn bolt spring would be more likely to fail to reset the bolt and lock the cylinder in battery instead of preventing it from releasing..unless it collapsed and somehow jammed up the bolt.

06-29-2010, 06:51 PM	#5
C50 Junior Member Join Date: Jun 2010 Location: hartselle, al Posts: 4	it looked like someone had taken the gun apart in the past and didnt fully compress the spring when they put it back in. it had a bit of a kink in it. i almost missed it and was ready to send it to s&w but i noticed it and swapped it out and now it works like a champ.