* Motor: An electric motor provides the power. When you press the switch to lower the window, the motor activates.
* Gear Reduction: The motor's high-speed rotation is reduced through a gear system to provide the slower, stronger rotational force needed to smoothly lower the heavy window.
* Cable and Pulley System: This reduced rotational force is transferred to a cable (or sometimes a rod) wrapped around a pulley system. The pulley is connected to the window regulator. As the motor turns, the cable winds or unwinds, causing the regulator to move up or down.
* Window Regulator: The regulator is a mechanism that holds the window glass and translates the cable's movement into vertical movement of the glass itself. It usually consists of a series of rollers and tracks.
In short: The switch sends power to the motor, the motor turns a gear system, the gear system winds or unwinds a cable, and the cable moves the window regulator, raising or lowering the window.
If your Roadmaster's pull-down mechanism isn't working, the problem could be with any part of this system: a failed motor, a broken gear, a frayed or broken cable, a seized regulator, or even a faulty switch. Diagnosing the specific issue requires further investigation.
