Originally Posted by
davidad
I am an old boilermaker. I used a small 4 pound maul and it still wouldn't budge. The crank arm was being held in a vise at the time.
Geez, that's pretty serious. Hate to mention it, but do be sure about reverse thread on the left hand crank. Sorry if you know already..
i guess penetrating oil for a day or so is next up.
Maybe that and heat cold to break rust seal.
Good luck. And not breaking the crank arm too!