John,
Depending on how dirty it is, I have had a lot of luck simply taking it to a car wash and spraying it with a high pressure soap and then blasting the soap off. The numbers on mine cleaned up really nice and white. I then took the computer home and set on an old garbage lid (upside down to capture all the wd-40) and soaked my computer thoroughly in wd-40. I let it sit for a day and then tried to turn the computer over. I rocked the crank back and forth gently until it freed up ....then soaked it again with wd-40 and let it sit for a couple more days.....and tried again to rotate it over. Mine turns over very smoothly. DO NOT be tempted to take it apart! I did that once and was very lucky to get mine back together so it worked.......over four hours later. Good luck on the restoration. I'm sure others will have better ideas on cleaning it, but what I did worked great.
Mac
