The fan has to come off first. Should slide right off once you turn the lock tabs and remove the 4 bolts. Pay attention to the weights if any.
Then you'll have to remove the big bolt with the dog for the handcrank. I forget the size offhand, something like 1-1/8". Use a 6 point socket, as the corners are already rounded.
Usually, tapping on the back of the fan mount surface with a brass hammer will walk the pulley assembly off.
If not, I have used a "harmonic balancer puller" (which you can probably rent at OReillys or similar). You'll need a long bolt to go in place of the dog bolt, which you might have to order someplace like MMC or Fastenal. Again I forget the exact size required, something like 5/8 NF by 7" or so. Just match the dog bolt but add 1" or so. The forcing screw of the puller will bear on the head of the long bolt, while the other end gets threaded into the nose of the crank.
You'll also need two ridiculously long 1/4" bolts with nuts and fender washers, to reach from the puller to the holes in the hub. I'm pretty sure you can get the original bolts out with the hub still in place, but I'll admit its been a long time and I'm not sure.