I had loud squeaking coming from my front bushings also, and I was able to remove the bushing bolts one at a time and grease the bolt and bushing. By removing them one at a time, you can get them back in prettly easily. My 300ex rear axle bearings just went out and destroyed my bearing carrier, rear disk hub, and a few other parts, so I wouldn't put off replacing them (I thought just one more ride would be OK). There are a lot of parts in the rear axle/carrier/bearing assembly, and the way it's put together is not obvious. I wouldn't even try to change the bearings without a manual of some kind (Haynes, or Chilton's or whatever). The axle lock nuts on the right side of the brake hub are left hand threaded, and you need a LARGE wrench (45mm or 1-3/4", and a 56 mm)to get them loose. It took me two weeks to even find a place I could buy a wrench that large (I tried a torch, and a pipe wrench first), and then I had to cut the axle lock nut off with a hacksaw anyway. www.servicehonda.com
sells the larger wrench/tool for around $60 . By the way, you can see exploded diagrams in the parts sections of the web site at www.servicehonda.com
also, they help a lot.