Read item #3 again:
3) Lint around the control sensor. Lint has a habit of getting where it's least expected.
The schematic and parts breakdown at www3.sears.com show both a control and over temperature sensor. If these get covered with lint, the control element is effectively insulated. This then drives up the temperature, which in turn, contributes to pre-mature failure of the bearing.
Here is an article on lubercation:
Best practices for lubrication
Pay attention to item #11.
http://www.corvettemagazine.com/content/view/57/
You have a direct drive fan to check too. Be prepared to check it when it's cold and hot.
Print out the diagrams from the www3.sears.com site, using cut and paste to see what your up against.