1986-1995 Vehicle use a pressed in wheel bearing and hub. The bearing is pressed into the backside of the hub and retained by a snap ring. The hub is pressed into the frontside of the bearing. Your need a hydralic press and the special tools to remove it. Remove the spindle, and either take it to a Ford dealer to have the hub and bearing swapped out or to a independent shop with an OTC Tools HubTammer kit. You cannot get it out by hammering it.