This is a Instructable to repair the BMW's E36 Coupe Door.

It also solve the problem of the window stop going up and going down again.

Step 1: Get the Parts Before Start

Before you start this project you should have the following:
Clips:

The clips on the 2nd image I've bought on official BMW

3D Printed parts:

Plastic supports

Motor gasket

Step 2: Open the Panel

I will not explain how to open the inside panel because there are a lot of videos with that.

If you just want to lubricate the window rails or change the printed plastics you don't need to disassembly the windows structure.

To disassembly the windows structure you need to drill the rivets as shown on the picture 1. It's not so easy!

Then you need to pull the metal clips from the 3 plastic parts like in image 2

You need to take the bolts as shown in image 1

Then take out and replace the gasket, image 1

You may need to lubricate the motor, image 2

Verify if everything is ok and lubricate all the rails ans hinges.

I've noticed that the structure was not right as you can see in image. I ha to bend it a little bit.

I've used T-Rex but I don't know if it is the best for this.

When assembling the motor structure you must pay attention on:

The screw on image 1 will change the pitch of the glass as in image 2, so you may need to put it a little bit up or down.
To insert the metal knobs on the plastic parts (image 3), you can FIRST insert the metal clips on the plastic parts, THEN insert the plastic parts on the rails, and then you just have to push the metal knobs with some pressure so they get in

When you attach the panel on the door, you have to be sure the the clips are aligned or they will brake.

On make case I had to push the panel a bit up, so they can enter on the holes.

Hope this helps to repair yours BMW doors.