Pick up a can of PB Blaster. It's the best stuff in the world. I had a pilot bearing on this same truck that was seized in place. I had a bearing puller on a slide hammer that wouldn't budge it. WD40 didn't help either. I even attached a come-along to the bearing puller, and it still wouldn't budge. Picked up a can of PB Blaster, soaked it down, and 5 minutes later, it popped right out.

93 4runner V6, 4.88's, 31" mt's with more to come.
03 Tundra V8 on 265's