UPDATE 06/02/2015 - The diode board was TOAST! That's what was causing the
noise. The bearings were replaced, the slipring and the brushes got
changed. But only after replacing the diode board the noise was gone!
Alternator noise
Piskani po repasi alternátoru.
2007 suburban alternator noise
Valeo 90A alternator noisy?
Is this much of noise OK for a VALEO 90A alternator on a 98 AEB Passat?