tx200 sear not catching

[harrympope]

got it used and a bit abused.took it apart cleaned it up and fired it three times to make sure all was fine before ordering tune parts.then it just stopped being able to cock.ive checked all the basic stuff and what seems it that the piston isn't pushing the sear far enough to set and engage.ive adjusted the trigger and about everything else but am stumped. and yes the trigger system operates fine when cocked manually when out if the gun. I've taken the trigger assembly out of the gun in the block and pushed the Piston back and it just does not push it far enough back to Cock it. But if I take the trigger unit out I can cock it manually by pushing it.

 

[chiro972b]

Cocking shoe may be buggered. They tend to wear down and not push the piston quite far enough to engage the sear. Other possibilities, the cocking linkage can hit the bracket where the stock screws attach and prevent the piston from moving far enough. If the cocking shoe is good, this is usually the cause. This will also hit if the cocking shoe is worn out, but if that is the case then replace the cocking shoe first. Jim Maccari used to sell machined steel cocking shoes, but I just bought the last one on his site a couple of weeks ago. You might email him to see if he has any more or is going to make more in the future.

 

[Brazos]

I tend to think its a trigger adjustment issue though I know you have tried that. It doesn't cost anything to try adjusting the trigger some more.

 

[harrympope]

 like I said the trigger assembly does not catch the sear when it is out of the gun (in tne end cap)and i push it back with the piston. but if i cock the trigger assembly unit when it's out it works.

it has nothing to do with the cocking shoe or anything like that. If i play with the adjustments and I'll get it to work once but then after that it never works again something's goofed.ice cleaned the trigger a few times but all seems smooth.

 

[Jonah]

I had what sounds like maybe your problem. Can't tell you why it happened, but I backed both screws in the trigger out so they made no contact. Then went through the trigger adjustments and "fixed" the problem. Trigger worked perfect out of gun, but not in the gun. May not help, but worth a try.

 

[Springrrrr]

Hit You Tube and get a good view of the trigger's internals and its operation. Take the trigger apart and be sure there is no broken or loose spring. Clean it up, lube it and try again.

The video is on GTA in your post there.

 

[spinj]

Go to where the link below takes you. In that post I shared that what you are experiencing is a common problem of the TX200 and how to resolve it.

https://www.airgunnation.com/topic/tx-200-cocking-problem/#post-450029

 

[Green_Yamo]

This may sound stupid, but make sure the spring guide is seated all the way into the trigger block when installed. When I first got my TX, I disassembled it to look it over, I reassembled it, and then the piston wouldn't latch. When I disassembled the gun again, I could see that the end of the spring guide was not all the way seated in the trigger block. This prevented the piston rod from catching the top sear.

Good Luck!

 

[harrympope]

I tend to think its a trigger adjustment issue though I know you have tried that. It doesn't cost anything to try adjusting the trigger some more.

looks like you were right.i got out my other tx and matched the settings.it still is having trouble setting the safety unless I really pull back hard but most of the battle is won.

 

[Butch]

Loosen your forearm screws, 1 on each side and try cocking it then. It is a known problem with the screws protruding through the bracket to far and stopping the cocking handle short. 

 

[Brazos]

Of course I am right. Kidding aside I am glad you sorted it out. I have done the same a number of times myself.

 

[harrympope]

after about 20 shots it's not setting the safety and sometimes won't latch the sear unless I "mash" it! 

 

[spinj]

After checking that the left and right front stock screws aren’t the issue, have you read the posts from the link I shared? I can almost guarantee the solution I provided therein will rid you of your problem. I highly recommend that you DO NOT touch the trigger until you’ve read the posts there. The safety not latching and having to mash the cocking handle are the symptoms of the problem I stated in that thread.

 

[harrympope]

I got the gun not working and the trigger was already adjusted wrong.i just got my parts from Maccari so during the rebuild I'll look at the stuff you mentioned above.

thanks for the help.mine is an older mk11 btw.

 

[Jonnes]

Do you have any spacer rings placed? If so, remove them one by one. Chances are that's your problem. The piston can't catch the sear, that's mostly due to spacers after a rebuild.

 

[harrympope]

Do you have any spacer rings placed? If so, remove them one by one. Chances are that's your problem. The piston can't catch the sear, that's mostly due to spacers after a rebuild.

nope just the stock washer at the rear.

 

[Jonnes]

Try to remove that one and see if that solves your problem. You changed your standard spring to the Maccari one, right? As I recall, the Maccari spring has more windings. That could be the issue. If that solves the sear catching problem, try a thinner washer to protect your internals.