Finished the driver side motor and regulator refurb yesterday.

To me the window motors are built fairly strong. The commutator on both motors showed virtually no wear, just discoloration from the brushes.

I think a good small electric motor shop could replace the brushes, if ever needed, and the motors might never need replacing. I have read that the current overload protection component might fail and need to be jumpered across, but mine were good.

I pulled the window and never checked for it being in the front track when re-installed. That caused a bit of grief and frustration before I found out what I had done.

I ordered a 3M silicone paste 8 oz. 08946 that is touted as being a good lubricant/protectant for many purposes including power window mechanisms. Hoperfully that will prove to be a dood choice.