Conversation so far:
What kind of Spirit rover equipment failures were there?
On March 13, 2006 (sol 778), the right front wheel ceased working after having covered 4.2 mi (7 km) on Mars.
What did engineers do to fix the right front wheel problem on Spirit rover?
Engineers began driving the rover backwards, dragging the dead wheel.
Were engineers able to get the dead wheel working properly again on  Spirit rover?
The right front wheel showed slight movement in a wheel-test and clearly rotated with normal resistance on three of four wheel-tests, but stalled on the fourth.

Question: Were there other problems with equipment wear?
Self-contained rewrite: Were there other problems besides the the dead wheel with equipment wear on the Spirit rover?