Window regulator spring?

[Billybobjunky]

So I am cleaning up these window regulators and I thought of a question I couldn't answer. Why do they have those springs mounted on them? Is it to assist with raising the window, or what? Just wondering...

[Billybobjunky]

And how many posts is it til I ain't a "new member" anymore? Heck, I've been here since 2004...

[theskytoucher]

It is every 250 posts that you go up in "rank"!!!
Can help you with your other question sorry!!

[jdconnel]

From what I remember on other regulators, the spring is there to fight gravity. Without it, there would be little stopping the gears from spinning free when the window is up, and thereby not holding it in place.
If you push down on the window in some cars you can get the hand crank to spin (force down greater than spring tension holding it in place)

All I know is remember that the system is under compression. When removing a bolt that held the arm in place on my 76 Mercedes, I caused it to swing 180 deg from bottom to top (right where my head was). Remember seeing stars when I got up a while later, and still have a make on my forehead…..

[qman]

It's a counter balance. Kinda like the springs on your garage door. Undo one of those some day and see how really heavy a garage door is.