So I'm trying to rebuild some SAWS, and one of the allen head bolts that ties down the lift adjustment collar is stuck. I've hit it with quite a bit of PB blaster, and I'm wondering about applying heat. I'm pretty sure the collar is aluminum, not sure about the bolt. Not really sure what to do, so any tips are appreciated.

For now I'll just soak it again and go to sleep.

 

Try soaking it in coca-cola classic for awhile. The acids in coke have worked when products like WD40 and liquid wrench failed to work. Atlease for they have, and I'm sure others here have used it. I always have a can or 2 around when It's time to wrench on my beast.

 

never herd the coke idea... pretty good idea though.

 

I think I heard that Tabasco sauce works too.

 

i know the bolt isnt aluminum, but the collar is and those products dont work with aluminum, another thing to try is amonium (for aluminum corrosion)

 

Amonium? Is that different that ammonia? Where might I score some, is that a common product at a parts shop?

I figured the bolt is steel. Isn't there a chemical reaction problem inherent in putting steel and aluminum together? Not sure if thats the right way to put it technically, but someting about aluminum can encourage corrosion in steel, yeah?