Keep that steam cleaner (or pressure washer) away from wheel bearings, swing arm bearings or steering head bearings Mike, or you'll be sorry!
I destroyed the front wheel bearings in my BMW R100RS using a steam cleaner, it cleaned the wheels up fine, but it also washed all the grease out of them, and I didn't know until I got into a "tank slapper" at 80 Mph that anything was wrong!
I'd send you a pic of my undies as proof, but even now, I still can't bear looking at them!