I wasn't sure which forum section to post this so feel free to move this if there is a more correct place for this. Since I have an extra Climate Control Push Button for my '81 300sd and it only blows hot air, as a side project I thought I would play around with it and see if I can rebuild it.

Are there any instructions on rebuilding these anywhere that I could reference? I have no problem tinkering with it, but if I have some sort of path of least resistance or reference that couldn't hurt.

Thanks in advance!