On Sunday, October 4, 2015 at 3:03:51 PM UTC-5, Bob wrote:
Hello,

Trying to get the gunk and dried up grease out of motor bearings.
Unit is eons old, and armature won't turn easily anymore.

Tried Liquid Wrench, and also soaking in gasoline.

Neither seems to dissolve the stuff.

Anything better ?

Thanks,
Bob

If they're open bearings try brake cleaner and or kerosene. Use a parts cleaning brush with long enough bristles to get down into the bearing and if the bearings are small, an old toothbrush will work. ^_^

[8~{} Uncle Greasy Monster