I checked again the dishwasher and found that the white plastic part (barrel rear) where the motor shaft enters, has a two fisures so I believe the reason of the noise is that the barrel is sliping over the shaft.
I am attaching three pictures, I want to know where are the splines? I see the brown straight lines on the hole where the shaft enters (see the shaft picture .. no splines) .. which is the system to keep the shaft and the plastic stuff ( barrel/macerator/impeller)together?, see that the shaft does not have any hole where the lock screw enters.
Any coments?
German
The pictures are at:
Picture 1
Picture 2
Picture 3
regards
Thanks