I've heard this for years and don't do it. But it is blind acceptance of the advise. I've never found an acceptable explanation as to why. Anybody have one? Bob On 9/3/2013 10:19 AM, Bob Spidell wrote: > > > Probably not necessary to mention to this crowd, but it's not a good idea to > spin (rotate) dry bearings (i.e. using a blast of air). > > Bob