yo 90bronco86,
As KRAFY advisewd; post voltage.
I CLEAN glass runs first w/cotton t shirt sections dipped in dish was and water solution, then spray silicone into glass run; see more **** info @ end of this reply.
Motor Repair
Source: by Tracy (Stinger) at Ford Bronco Zone Forums
http://broncozone.com/topic/1563-window-motor-fix/
Motor Torque Pin (also called Bushing) Info & pic (Tailgate, but same for PW); "...fixed it for free some fuel line and a few small cunks of a bolt. Here is a closeup of the bad parts. in the points of the triangle there should be 3 round pins. this help cousion the window from motor shock. I cleaned all the old grease out of the motor and the final drive. my final drive was fine so i was going to reuse it. To rebuild for almost free here is all you need. some fuel line and some steel rod or round spacer (this keeps the fuel line from colapsing completely) i cut the fuel line to the height of the drive gear housing and cut the spacers from round stock i had on the bench. the steel spacers go inside of the rubber fuel line. then the rubber fuel line and steel spacers go in the final drive gear.this was a tight fit but not too tight..."
Source: by Michael C (collinsperformance, The Money Monster) at
http://www.supermotors.net/registry/6364/52803
ubrication from Bronco Workshop Manual; "...Use Silicone Lubricant C0AZ-19553-AA (jelly) and D7AZ-19553-AA (spray) or equivalent meeting Ford specification ESR-M13P4-A on the door and window weatherstrips whenever necessary. Silicone lubricant helps avoid weatherstrip squeaks and retards excess weatherstrip wear from chafing between the door glass upper frame and the weatherstrip. It also helps to retain door window alignment by reducing friction between the glass frame and the rubber weatherstrip. Use Multi-Purpose Grease Spray D7AZ-19584-AA or equivalent meeting Ford specifications ESR-M1C159-A and ESB-M1C106-B to lubricate door and tailgate hinges. Apply an even coat to all hinge pivot points as outlined in the maintenance schedules or when a binding or squeaking condition occurs..." miesk5 Note,
Use PTFE grease for slides & tracks.
Use silicone spray on the weatherbelts & glass run; test the silicone on a regular styrofoam cup first; if the cup gets funky or melts, then the can or tube contans oil, a regular occurrence now, esp if from China
I CLEAN glass runs first w/cotton t shirt sections dipped in dish was and water solution, then spray silicone into glass run