Last time my impact wrench could not loosen that bolt, I tried the starter bump method and it worked easily. I braced the bar against the garage floor.
Before putting it back on, yeah, I would make sure the harmonic balancer is not compromised in some way. Might need to replace it. Look at your crankshaft where the harmonic balancer goes. Is it corroded? You might want to clean that up slightly with some very fine sandpaper. Then, if reusing the balancer, do the same on it's inside where it contacts the crankshaft. Lastly, coat the crankshaft with some anti-seize. The next time it will pull right off without having to use a puller.
To torque the bolt, I use an impact wrench with an 80 ft lb torque limiter extension. Works great and super fast.
Before putting it back on, yeah, I would make sure the harmonic balancer is not compromised in some way. Might need to replace it. Look at your crankshaft where the harmonic balancer goes. Is it corroded? You might want to clean that up slightly with some very fine sandpaper. Then, if reusing the balancer, do the same on it's inside where it contacts the crankshaft. Lastly, coat the crankshaft with some anti-seize. The next time it will pull right off without having to use a puller.
To torque the bolt, I use an impact wrench with an 80 ft lb torque limiter extension. Works great and super fast.