I have tired the hex tool that fits poorly in the pulley (slips out very easy), a 1000ft lb impact wrench.....with PB blaster for two days and I tried heating the bolt. What else is there to try?

Thanks

 

Use a better impact wrench and make sure it has a good air supply (not one of those curly plastic hoses).

Turn counterclockwise to loosen. In other words, it is standard right hand thread like other bolts.

 

I have tried 5 different impact guns, a Harbor Freight 1000ft lb, Harbor Freight 580ft lb, Dewalt electric 295ft lb and two others. The hose is of good quality, it is a Goodyear 3/8" hose. I am turning counter clockwise.