This
guide was very helpful, everything works great if you follow each step. Something that is helpful to know, roll the windows ~3 cm down before you disconnect the switches. That makes both screws reachable, and gives enough room to pull the windows up and fiddle the lifters out of the door. And use some basic painters maskintape, it's more than strong enough to hold the glass up. I used duct tape on the first, that left alot of residue.
Took me four hours per door, that included:
- disassembly
- washing of the "rustproofing wax" that has been applied from my dealer
- sounddeadening with butyl/alu plates and foam mats
- new speakers and adapter rings
- assembly
The cleaning of the insides took some time. After the first door, the second one is much faster. And i'm not a hectic worker ;-)
And i didn't break anything, hurray for me!