Seat Motor Repair using Gearbox from Cougar (write-up)

1998MarkVIII

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Hello All,
My Mark VIII came with stripped gears in the driver’s seat that would not let it go forward or Back even though the motor was working.

I then purchased some spares from ebay, but they only included the motors, switches, and Memory modules. Enough for 3 seats.

I reviewed and tried the fix in http://www.lincolnsofdistinction.org/vbulletin/showthread.php?17509-Seat-motor-repair-tips-(long) and found out that my gearbox was stripped.

I then ordered a driver’s seat track from a Gen 1.
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Before instilling this I decided to check to see if I could use anything from my 1996 Cougar. The seat was broken in the crash.


I took apart the Cougar’s seat and pulled the seat motor. I compared this to the one form the Mark and found that the only differences are in the back-plate. So I decided to use the gearbox from the Cougar with my existing motors.

Remove the seat for the car.
Remove the trim.

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Align the seat so the gear is even with the opening in the track.
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Remove the tack clips.
Undo the bolts opposite the motors
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Slide the track away far enough to remove the axle.
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Move the memory module aside.
Undo the two nuts holding the motor.
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Remove the two T30 bolts from inside the track.
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Gently pry away the track from the motor then
Remove the two aluminum Covers (gently pry these away)
the motor should now come loose.
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Tag the memory position connectors and remove these and the motor power connector.
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Separate the three motors from the Cougar gearbox
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Remove the metal protective cover from the back of the motors.
Tape the back cover to the motors.
Remove the back covers from the gearbox.

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Attach the replacement gearbox to the existing motors. Be careful to align these in the gears.
Reassemble the seat.
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