I'm with Bling...REALLY need the service manual. Being able to see the correct placement of the parts is invaluable. Just for REFERENCE here is what I did. I am not a mechanic so my methods might not be sound (or sane).

When I replaced my case cover I used a drill press (de-energized) with the outside of the case supported on wood blocks and a small piece of wood over the shaft to press out the water pump. I used small angled metal pick (like a dentist's pick) and needle nose pliers to remove the mechanical seal (tore off the spring first) and then picked out the oil seal. It was not pretty but it worked. You will need to replace the mechanical seal and the oil seal anyway so order them ahead of time.

To get the bearing out I supported the outside of the case on wood blocks and used a deep socket that made good contact with the inner bearing race and hammered it out carefully (patience). I was able to reuse my bearing.

Putting it all back together was fairly easy. I used a socket large enough to engulf the mechanical seal spring and still make contact with the metal ring seat it and tapped it in carefully. You need to grease the oil seal before installing it. The only place I had a little trouble was getting the bearing fully seated. It started to go in on an angle. I had to support the case from inside so I could apply a little more persuasion to the bearing and then it seated correctly. Lastly I pressed the water pump back in while supporting the inner bearing race. This is how I did mine since I did not have the "Honda" tools available.

Good luck getting yours installed.