Weird 629 problem

[Leadchop54]

I recently picked up a 629-6 3". I'm having a weird issue with the trigger and hopefully someone can give some advice. I'm right handed so when the trigger is pulled, naturally there is a little more pressure pulling towards the right of the pistol. About half way through the pull, the trigger almost locks requiring a little more pressure to complete the pull. Now if I pull it and apply pressure pushing the trigger towards the left side, it's smooth as butter. I'm confused!! Hopefully everyone understands what I'm talking about. I've taken it apart and stoned everything that should be and it made no difference! Thanks in advance for the help!!

 

[Leadchop54]

Forgot to mention, trigger feels perfect in single action

 

[KLYDE]

I believe it relates to the hand. Possibly misalignment in the window. Hopefully some of the more knowledgeable can recommend how to fix.

 

[Leadchop54]

Thanks klyde! Hopefully someone else will chime in as well

 

[Nightowl]

Does it do this when the cylinder is open. Just open the cylinder, hold the thumbpiece forward, and pull the trigger. If you do not feel the problem, it is probably related to the hand, ratchet interface. Most times the little flaws are hard to diagnose without the gun in hand. Good luck.

 

[mikeydio]

Trigger Shims

The difference in trigger pull that you describe could be related to excessive side-to-side play with the trigger. The way to remove it is to use trigger sideplate shims that are sold by Power Custom, also by Brownells. Each shim is .002" thick and serves to remove the slop and keep the trigger from twisting and keeps it in alignment with the frame. Placing them on each side of the trigger, over the pivot pin, keeps the trigger and its relationship to the hand, centered in the gun. This will give you a more consistent double action trigger pull. If you are not comfortable with this, please have a qualified gunsmith do the work.

Mike

 

[Leadchop54]

It does have the same issue with the cylinder open so that pretty much rules out the hand/ratchet. I might look into some shims. Thanks guys

 

[4barrel]

Forgot to mention, trigger feels perfect in single action

Before you spend a lot of money I would order an oversize hand & pin assembly from NUMRICH. If that doesn't fix you haven't spent a lot. Those trigger parts are casehardened and precision fitted. Let us know.

 

[USBP SW]

I have seen this problem before, and in the instance I observed, simply tightening the sideplate screws solved the problem. If the sideplate screws are tight, then I would recommend following the shim advice.

Good luck, Steve

 

[Nightowl]

One thing I ran into with one of my guns was that the double action interface with the hammer and trigger did not align properly, so that the notch in the trigger that the foot of the trigger enters as the sear disengages was out of alignment and hung just a bit. I fixed the interface with a stone, luckily without messing up the timing, so i'm not sure if it needed a new hammer, trigger or both, or if there was another issue that caused the problem. If you can remove the sideplate and watch work the double action, you will be able to see if this is your issue. If that is not the problem, I am out of thoughts at the moment.

OK. Another thought. If the sear is too long, or the angle is not cut right, it will cause double action problems. Watch that too, as you are checking the aforementioned issue.

 

[Abbynormal]

I recently had the exact same problem with my K-22. I cleaned it normally and it still continued to have that extra hard pull halfway through some DA shots. My shooting buddy's Dad is a S&W armorer and he shot it and took off the sideplate, wiped the interior clean, examined all the parts and couldn't find any problems. I again cleaned it at home, took it shooting again and had the same problem. This time, I took the gun home, completely disassembled it, short of taking the cylinder and ejector rod off. I used about half a can of brake parts cleaner on it. Brushed every part completely and then rinsed everything in my parts washer.

I oiled the gun up, assembled it and when I took it shooting the next week, it worked like a champ and the action was easier and smoother than ever before. In discussing it with Bob the Armorer, he thinks that fouling or debris got caught under the ejector star or ejector rod causing the rachet to be a tad high and causing the hand to bind on the rachet.

Take yours apart and liberally hose it down with BPC and see what happens.

Good luck

 

[CWH44300]

I can't begin to count the number of broke guns, that a good cleaning and oiling fixed, including a few brand new ones, its worth a shot

 

[Leadchop54]

So.......I took it apart, hosed it with brake clean, re oiled, put it back together.......perfect!!! The issue is completely gone!! Amazing because it really wasn't dirty in there! I am now a firm believer in making sure the internals are spotless!! Thanks so much guys!!