A common issue on the BMW E38, the window regulator have a weak with the plastic pulley which tend to break in time.
Time to put aluminium pulley and be safe for years.
I put some music in this video, let me know on what do you think ?
Music used in this video.
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0:00 The noise
0:16 Removal of the panel
4:08 The brocken pulley
4:18 Removing the old pulley
5:33 Installing the aluminium pulley
14:12 Put back the window regulator
16:02 Working regulator
17:29 Put back the door panel