I used the Harbor Freight tool to get the cotter crank pins out of my '64 Hercules but the crank arm are stuck on the spindle. I hammered a bit on a drift positioned on the inside of the arm where there seemed to be a divot location. But they are frozen pretty solid. I tried to heat up the arm a bit with a heat ***. And I sprayed PB Blaster on the inside bore and around the spindle to arm interfaces. Now I will give it some time and let it soak. Is there something else that I can do?
I expected a fight from the cotters, but not the arms themselves.