[Ugh!]

Got a MAK-90 front end that still had the trunnion. Wanted to remove the barrel. Went to press out the barrel and noticed on one side where the barrel pin should be was completely smooth. On the other side the barrel pin was clearly visible. I assumed someone had peened the pin and ground smooth. Well after repeated attempts with a 12 ton press to get the pin out it is not moving, it actually started to put a trunnion shaped indentation into an aluminum press plate.Think someone welded the pin in place? Anyone encounter this before? If it is welded I guess I can grind the weld, my only concern would be if it would weaken the trunnion. Below is a pic of the smooth side of where the barrel pin should be.

 

[Sangrun Hunter]

I have a stamped MAK-90 and all the pins are like that. They are a real pain to get out. I never removed the trunion pin, but it's jsut like you explained.

 

[hcpookie]

Had a very similar experience with my Chinese 56-S when attempting to remove the FSB.

My guess is that its the normal press fit. The Chinese use a really tight tolerance, and you'll find all of the press fits are like this. Give up! Just drill it out and be done with it.

 

[Ugh!]

Thanks for the advice! Time to warm up the drill press!

 

[hcpookie]

No prob! I was beating my head against the wall until someone pointed out how the Chinese assemble theirs so differently than the Euro models.