Re: Power windows
Cave, I think we're all assuming that when your window gets stuck, that you can still hear the motor running, as long as you hold the switch down. If so, then the 3 projections on the nylon spur gear in the window motor gear case broke. The nylon spacer idea works good! It's quicker than the way I used to do it - JB Weld output gear to the spur.
A little more info on the guts... The motor shaft has a worm gear on it, that turns a Nylon spur gear. In the center of the Nylon spur gear, there is (used to be!) 3 projections molded into the spur, that transmitted power to the clover leaf shaped back of the metal output gear. Those 3 projections break off over many years of use, and it turns into sort of a weak clutch, instead of a direct drive.
The 3 cylindrical spacers (3/8 or 1/2 diameter, I don't remember either!) must fit in the space between the underside of the metal gear and the inside of the Nylon gear. If you make them too long, the metal gear won't seat all the way down, and the gearcase cover won't fit tight.
Be advised, filing or sawing Nylon takes a while, so you might want to clean out the grease and take it with you to the store to get the spacers. I should have!
I learned the spacer idea right here on the Bronco Board!