Huben K1 doesn't shoot anymore after reassembling.

[Harold999]

Disassembled/reassembled a Huben K1 a dozen of times, but this time it does nothing anymore when i pull the trigger?
Regulated part has air, the breech also (while filling you can hear/see the magazine triggering around 80 bar point).
Tried powerwheel open, close, 50%, regulator at 170 bar etcetera, but nothing.

Anyone an idea what i might be overlooking?

 

[Leon83]

Statistically I would disassemble/reassemble...

 

[Yo]

Check the Safety?

 

[Harold999]

Check the Safety?

The safety seems to work fine. I can notice a difference in trigger pull length between safety on and off. 

 

[Harold999]

Statistically I would disassemble/reassemble...

Did this a couple of times since it wouldn't shoot anymore. The outcome stays the same. 

 

[GTA1]

Try taking off the linkage and manually moving the firing lever at the rear.

 

[Harold999]

Try taking off the linkage and manually moving the firing lever at the rear.

Tried that, doesn't shoot.

Without the safety on, the lever goes only a little bit further than with the safety on, 1 millimeter (0.04 inch) tops, is that okay?

 

[Yo]

Cocking lever maybe it hasn't been cocked.

 

[Yo]

The mystery of hammerless guns. I have not personally taken any of mine apart. This will definitely be a good read.

I think the gun doesn't think it's cocked. Check that cocking lever what it actuates and manually actuate it.

How's about degassing it and checking for a broken spring and or pin in the mystery valve? Or the spring that goes back and fourth during semi auto mode?

 

[Jammin22]

Try adjusting the sear screw in the back of receiver. There is 2 small Allen head screws located in back of receiver. The sear engagement one is the one on the gauge side. So if you're looking at the butt it's the left one. Try adjusting it on way or the other but in small increments. 

 

[cootertwo]

How far "apart" did you take it?

 

[SONG55]

Can you make short video of your gun function. Sound like your striker hammer and firing valve not seated properly inside the receiver. Don’t know that for sure until I see the video. 

 

[Harold999]

Removed the cover and poked against the striker hammer. Put the cover back on and bingo, it shoots again!

The two orings looked fine so no chips of rubber floating around there, so what could have caused the striker to be stucked? 

 

[SONG55]

Next time you disassemble the gun, make sure striker hammer lightly grease. Also help if you polish your striker hammer, this will improve your gun to shoot more consistent. 

 

[randy_68]

I've seen this issue before and only on the guns that have the two oring buffer in them. Sometimes the orings get chewed up and pieces get stuck in the sear preventing it from releasing. The other issue as I see it is the orings are too soft and let's the hammer striker move back too far and then gets stuck as it cocks just a tiny bit in the bore. Polishing and lubing does help. But the best thing to do is replace the two orings with a one piece buffer similar to this.

 

[Jammin22]

Randy should be called the Huben Expert. He's the man!!!

 

[Harold999]

Randy should be called the Huben Expert. He's the man!!!

Yes he was the one that lead me in the right direction!