[gbrtng]

The three motors are enclosed in one casing. Remove the bottom seat cushion - there is a wire retainer at the front of the cushion. Then unbolt the seat from the frame - 4 bolts, and disconnect the power wiring. Remove the seat track frame from the floor - 4 more bolts. Open the motor assembly and remove the three armatures and clean the rust from the armatures and pole pieces. Lubricate the bearings with light oil and reassemble. The trick is holding the three sets of brushes apart whilst assembling the end plate.

If you can't get the armatures out because they are rusted to the pole pieces, try some penetrating oil to cut the rust. Else you might have to resort to some rebuilt tracks.

I fixed the four seat assemblies on my two 91s that had some flood water on the floors
from the flood we had in Naperville in 1996. They are still working fine.