I decided to replace the supercharger pulley bearing with a fresh new Japan made Nachi bearing. One of the easiest way is the hot/cold method, where you heat up the pulley and freeze the bearing itself. This results in the bearing sliding into the pulley with relative ease.
I could’ve also used my workshop press, but I didn’t want to force it in. I followed this guide for it:
Some more pictures:
All CLS55 AMG pictures here in my Google Photos album: https://photos.app.goo.gl/6SP5PFAUXCqanoSX9