If the bearings are going out, then theres not much that can be done other than to wait till if quits.
Best to replace it now. Explain the importance of the motor and what could happen if the motor quits. Emphasize that a motor failure could damage other components.
I fully support the military and the War on Terrorism.
If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.
If you do know, then do. But do it right. Otherwise, you may not be doing it long.