Removing the gas piston

[Bloodsport2885]

Originally Posted by 555th

The piston being wobbly is more normal than a tight one. The pin should drive out easily with a punch after you get it started.

I use a piece of a roofing nail for the replacement pin. Peen it down on both sides and then file off the excess and after it's refinished, you can't tell it from the original.

Only problem is theres no pin to hit. One side is an open hole in the carrier through which I can see thread and the other has been ground down so much that its impossible to destinguish between carrier and pin through the grind scratches.

[555th]

Originally Posted by Bloodsport2885

Only problem is theres no pin to hit. One side is an open hole in the carrier through which I can see thread and the other has been ground down so much that its impossible to destinguish between carrier and pin through the grind scratches.

On the side with the grinder scratches, sand it down almost smooth and rub a mixture of WD40 or penatrating oil and a couple of drops of paint over where the pin should be and it should show the outline of the peened pin. Start with a smaller pointed punch until the pin starts moving, then you can use a straight punch to drive it out. Once it starts, it will come right out pretty easy.

[BigBlue]

Just a thought here, what if you heated it up a bit to expand it enough to make it show a difference and hopefully the pin?
Don

[555th]

Originally Posted by BigBlue

Just a thought here, what if you heated it up a bit to expand it enough to make it show a difference and hopefully the pin?
Don

That might work, I've never tried it.