The crank should have a key way ,if the old motor is useless I just hit the hub off with a brass drift punch and hit one side then turn crank 180 degrees and hit the other side and keep turning and hitting so it comes off evenly.
Another way is a bolt in the end of the crank for the puller to push against ,then use a 2 legged puller or use a bearing clamp with 2 bolts going to the harmonic balancer remover tool.
If I use a puller or clamp and balancer remover I tension the puller up tight then put one side of the hub on an I beam or similar and then hit the other side of the hub with the brass drift punch and a big hammer and this will shock the hub off a little then you keep repeating the process tighten the puller then hammer the side of the hub .
