yo,
Check the rollers;
Glass Roller (Dorman Universal Window Roller 74402) Installation in an 85
Source: by spikedzombies (O' Black Betty) at
http://www.supermotors.net/registry/18028/66512
OEM Window Regulator Roller #4557 New 1980-96 Ford Bronco $6.00
http://broncograveyard.com/bronco/i-34557-oem-window-regulator-roller.html'>http://broncograveyard.com/bronco/i-34557-oem-window-regulator-roller.html
Here is the motor gear that Seabronc mentioned:
Use this gear to replace the gear on your rear window motor.
New Gear and ****.Gear Dia 2-1/8 "
Window Motor Gear Repair Kit # 34554 New 1980-95 Ford Bronco Round Body Motor
Price: $18.00
http://broncograveyard.com/bronco/i-34554-window-motor-gear-repair-kit.html
Window Regulator Bracket Bushings (4 Per Window)
Item #34556 - New
1980-96 Ford Bronco
1 front and back bushing, 4 needed per bronco
$6.00
http://broncograveyard.com/bronco/i-34556-window-regulator-bracket-bushings-4-per-window-.html
Clean the track as much as possible
1) First roll down the window, drop the gate and take off the inside panel (about 8 philips head screws) covering the tailgate. You will see pretty much nothing but glass after doing this. 2) Then manually flip the latches so you can use the key to roll the window back up. ***Very Important*** Put something under the window to support it, sawhorse, lawnmower or whatever. The weight of the glass could cause it to break when rolled up with the tailgate down. 3) After the glass is up you'll have access to the inside mechanisms. If you bend over and look at the underside you'll see a couple of arms that attach to two 6"-8" pieces of channel. These arms move along the channel to raise and lower the glass. 4) Get some grease and smear inside both channels. You don't have to glob it in there just put enough that it goes completely on and along the inside of the channels. 5) Roll the glass back down. 6) Put your inside panel back on. 7) Pull your tailgate release handle one time to make your latches go back to the open position and close your tailgate. 8) Now roll up your window and see if it helped any. Mine goes up just as smooth as ever now. It doesn't slow down a bit. Now this may not work for everyone but it sure worked on my rig. Brian..BTW, this took about 45 minutes start to finish...." 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
Jeff at the Bronco Graveyard has offered a 2% discount to members of The BroncoZone for on line orders. To get your discount, enter the discount code BZMEMBER. Also you must include your BroncoZone User Name with the order.
http://broncograveyard.com