the pinion seal just pops out the end. once you get the seal out you will see how the pinion setup comes out. Just be careful prying the seal out, it shouldn't take much pressure to get it out. to get the pinion out a special socket will be need to remove the internal nut. it is not a cheap tool through Honda. I made mine, I found a flat plumbers nut that fit tight inside the internal nut and welded it to an old socket I had. I have made several tools of this sort for different makes and models and they all have worked well.