just battled this monster and even with the tool i dont think i could do any good, tried a pipe wrench around the pully and it held but i couldn't put enough booty behind it to break it loose, i eventually had a 3/4" air wrench with 170 psi which still had a hell of a time to break it free, good luck. i finaly got short sudden bursts of psi on the air gun that finally brought it out just before i burned the car to the ground from frustration!!!