Well I just finished replacing the driver rear. Man was it bad. I first open up the gear housing and all I find is a few pieces of bushing. Nothing like I expected. Then I looked inside the worm gear housing. Big gobs of grease and bushing was shoved into every crick and cranny.
To get it clean I had to pull the motor. Yes those bushings are a pain, but they weren't my real problem. After the motor was reassembled and tested, it wouldn't run. I couldn't figure it out. I took that thing apart 4 or 5 times trying to understand. :scratch:
Then I tried without the motor housing screws and it ran like a scalded cat. It finally dawned on me that the screws were the issue. Apparently if the screws are too tight the the lack of clearance in the housing won't allow the motor to run. Way to go Ford.
Tomorrow, I'll tackle the other side. BTW, if your back windows will go down, but not up, check the regulator. In the back its two cables. The cables enter the regulator housing with two springs, one on each cable. The spring on the bottom will bind the regulator and the motor. Get some forceps or wire cutters and grab one of the bottom coils and pull it below the holder. This releases the tension when the window goes up.