Real easy to remove the pilot bearing using the disc line up tool and grease. if you go all gung ho about gettin this bearing out and damage it before doing it this way (the right way) this method aint gonna work for you. first pull the ring lookin knob out of the line up tool that comes in your kit. fill the inside of the hole with grease. you will be displacing air with grease. once its full put the line up tool in the hole and wack it a few time with the hammer. as the bearing comes out, there will be more volume behind it and you need to keep adding grease, pushing out the air as you do it. on this job here, i added grease 3 times before it came out. its really easy to do. make sure you clean out all the grease and shoot it down with brake clean before you put the new bearing back in.