Early model electric windows problem - maybe...

[MikkoR]

I'm just doing conversion from manual to electric windows. The co-driver actuator is already installed, wiring is missing but powering it directly by a battery will move the window smoothly.

But.

How it is supposed to behave when the window reaches its upper limit? Should the motor stop or - just like in my case - should the motor continue to run and the mechanism just rattle as the gear is "jumping"?

[82eye]

it stops the second you take your finger off the trigger switch.

[MikkoR]

Ok. Badly written question. But what if I keep the button pressed after the window has reached its top position?

[reelizmpro]

I know what you are describing and that isn't normal. Once the window is all the way up, there is no noise or teeth slipping.

[MikkoR]

Ok. Then some actions are needed...

[MikkoR]

The driver window actuator gear is slipping when pushing against the lower limiter. And I think the co-driver mechanism is mirrored (can't see it atm) because it is slipping at the upper position. The gear system is shown in the linked picture. When going down the gear is turning counterclockwise. The gear is a helical gear and when going counterclockwise the gear pushes the "spring" downwards due to the geometry. Because there is a little slack (video) there is room for the gear to start slipping. I think this might be the case, or there is too much tolerance at the contact point. I may try to squeeze the tube a little from the lower side, so that at the contact point there won't be such a slack.

Or just somehow get the spring and gear a bit closer to each other at the contact point. This is another possibility.

May help, or not. But easy to test as this driver side actuator is not installed into the door yet.

Picture

https://photos.app.goo.gl/qXPSMQyvftk6Psdn7

Video

https://photos.app.goo.gl/DzhJQLzpuWrHhDPTA