The Nissan Path

Hey guys, my fan clutch is seized up so im trying to remove it...

I have the shroud, and 4 nuts that hold it to the water pump pulley removed, but the thing is seized on there or something...I've pounded it, heated it, but cannot get it to separate from the water pump pulley, any help is greatly appreciated!

Update: Wasn't doing anything wrong, clutch was just seized onto the protruding hub of the waterpump. Used a long flat blade scredriver and pounded it between the fan clutch and water pump pulley.