If you PM me with your email, I can send you my own consolidated steering head removal and installation guide, plus the pages from the service manual that deal with the steering head bearing and race removal. They're ready to go as soon as you tell me where to send them.
Driving out the races is simple. You just have to do it evenly, so the race doesn't get cockeyed inside the steering head tube. Use a steel rod, a drift punch, or something similar. I hit the race in a cross pattern (top, bottom, left, right) and just worked my way around the race in that manner until rewarded with that lovely "ping" sound when it came out of the steering head and landed on the concrete floor. You don't have to wail on it like you're trying to drive a railroad spike. Just keep the hits even so the race comes out straight. Check it visually every few hits to make sure it isn't cockeyed.
Driving in the new race wasn't a big deal either. I put the new ones in the freezer overnight to shrink them a little so it would be easier to drive them in. I took the old race after I knocked it out and cut a relief slot in it with the Dremel and diamond wheel. It looks like this:
That relief slot allows the race to compress a little as you're using it to drive the new race into place, so the old race won't get stuck in the steering head tube. I used a very thin film of grease on the outside of the new race, got it positioned in the steering head, put the old race on top the new one, and just started hitting the old race evenly around the circumference until I drove the new one all the way in and it seated in a little lip inside the steering head. You can tell by feel and sound when it's positioned properly. I visually checked it frequently as I drove it in to make sure it was even. The lower race is the harder of the two, mainly because you have to be in kind of an awkward spot under the bike.
My biggest problem was removing the lower steering head bearing. The service manual describes using a chisel to wedge the bearing up the steering tube until it can be removed by hand. I couldn't get the bearing to budge using that method, and I was a little apprehensive about hammering on it any harder than I was. And anyway, I didn't have the appropriate tool (or even the right sized pipe) to use to drive a new bearing into place. It was easier to just take the steering head to the shop and have them remove the old bearing and install the new one.
Some guys cut the old lower steering head bearing off with a Dremel tool and a cutting wheel. I didn't feel comfortable doing that, because I didn't want to accidentally cut into the steering stem. Maybe your guy wants to use a die grinder to cut off the bearing, and needs a compressor for that.
This task intimidated me when I first contemplated doing it, mainly because I was worried about damaging the steering head tube by getting the races in sideways. I'd never replaced bearing races beforeI tried it last year, and it actually went a lot smoother that I thought it would.
