I do a lot of these bolts. Typically my impact with 150lbs of air take them right off. One motor that was on a stand decided to fight.
Here's the story of what I did:
Took vice grips and blocked the flex. This stops the rotating assembly from rotating. Took out the 2 foot craftsman 1/2 ratchet and socket. Wouldn't budge, now I'm not a weak guy..things flexed. Walked over to my floor jack and grabbed the steel handle (approximately 4 foot) as I know it fits over this ratchet. Started to try the bolt with extra leverage and was going to tip the stand. Walked down to the neighbors place and asked for a hand. Neighbor is a contractor and not a weak guy. We looked at the situation and I stood on the side of the stand while he gave it a try. Things flexed, no movement on the bolt. I stood on the stand and also held the motor still, he put the bar up higher and we both said.......it's going to give or break. it came loose when he jumped on it.
Typically you won't fight this bolt that badly, but when someone overdoes the loctite etc...it can happen.
