After a incident in the garage, I had the idea that the crank pulley had a slight wobble. As these pulleys are known to separate (after a long period), I didnt feel comfortable with the car and made the decision to get this replaced.
Off course, its not a cheap item to replace, as this is an AMG specific item (2 belts running of the crank pulley, 1 for the accessory belt (6 ribs) and 1 for the supercharger (8 ribs)).
I went to Mercedes specialist Ralph Eidams in Brunssum where they were able to replace it within the hour, keeping down costs on labour. Even though it probably wasn’t necessary, I ultimately did it for peace of mind. I also let them replace the front main axle seal (krukaskeerring).
Partnr crankshaft pulley: A1130300103
Partnr crankshaft pulley bolt: 0009900200
Partnr front main seal: A0239978447
Ralph Eidams: https://www.ralpheidamsmercedes.nl/