Autozone rents tools at most locations, and the rental is free...you just pay for the tool...then when you bring it back, they reimburse the full amount. In my area, Autozone rents a pilot bearing puller, which is basically a slide hammer with an attachment on the end that has two hooks that spread inside the bearing. Once the hooks are in place, a couple of whacks on the slide hammer and the bearing pops right out. The new bearing can be driven in with the correct driver and a hammer. My front wheel recently developed a "squeak" or "chirp" after I replaced the front tire. I pulled the whole wheel back off, lubed everything really well, then put it all back together. The noise is gone.