These window regulators can be a giant MOUSE TRAP if your not careful.
If you can, get the window about 1/3 to 1/2 down.
Carefully place a clamp on the window to hold it from dropping.
2 pieces of 2x4 with some duct tape on them or wrapped with a layer of heavy cloth.
sit the pieces of 2x4, one on either side of the window and then clamp them LIGHTLY so the window can't fall.
Now reach down inside and carefully unplug the window power plug from the motor.
Remove the bolts/nuts that hold the regulator assembly to the door.
The assembly can then be pushed in and wrangled out of the door.
Now the "X" lift has 3 arms with nylon rollers on the ends. There are two arms that go to the lower track on the window itself.
The third arm goes to the "fixed" track in the door (runs horizontally)
The windows lower track has a spot that the rollers will come out of.
You must juggle the regulator back and forth to get the rollers out of the track.
Now you can carefully fold the arms together and snake the entire assembly out through the access hole in the door.
The motor is riveted to the regulator assembly with 3 rivets.
You must remove the rivets to get the motor off.
NOW the regulator has a nast assed spring in it, so be careful.
The motors drive gear must engage the gear segment on the regulator correctly.
You can use a pair of small "vise tongs" to clamp the assembly so it wont Snap closed and bite you when you remove the motor.
Once apart. check that all the rollers are present and will work.
Clean the entire assembly well with either solvent or a degreaser and blow dry.
Lube the hinge points with a non drying lube, and lube the rollers and the tracks with white grease (lubriplate 104 is good) be sure to clean the roller tracks well too as these collect dirt and crud that is a reason that these things go away in many cases.
Look the gear segment on the regulator over well to be sure the teeth are not messed up. ( a messed up gear segment will screw up a new motor real quick
Now, many of the new/rebuilt motors come with 2 little screws and nuts with star washers.
THESE are JUNK and will shake loose and the thing will stop working.
Some good small bolts that fill the hole well and have heads that will clear the assembly are best.
Use a nylock nut or if you cant get them, use BLUE LOCTITE on the threads.
Just make sure that the bolts fill the holes and do not allow the motor to ROCK?MOVE
Also be really sure the bolt heads will clear the mechanism.
Once the regulator has been fixed. move on to the rubber slide tracks.
These are available from LMC truck parts and a few other places.
You must remove the bolts and get the tracks away from the glass to get the windows out.
The new rubber track liners can be placed into the doors upper area and down the tracks, then reinstall the window.
Once the window is nicely back into its track and slides freely, you can block and clamp it back where you had it.
Try to place the regulator in about the same spot as it was.
Reinstall the regulator, installing the rollers back into the tracks as they were.
Lube those tracks well.
Be sure to get the lower arms roller into the inner horizontal traclk on the door.
Align the bolts/studs with the holes in the door and be sure the assembly slides in easily and is not binding.
Also be sure the wiring lays where it was and can't get into the regulator assembly.
Plug in the motor and your set.
Remove the clamp and try the thing.
If your repair was correct, the window should go up and down very easily and with little effort on the motor.
Now, not all window motors are as good as others.
I have had some rebuilts that were JUNK and others that were great.
Good luck and keep us posted
Snowy
