Miele CM6350 pump loud no matter old or new

Hello friends of the bean,

I have been able to repair some machines in the circle of the family through the help of this forum as a silent reader. Now I can not avoid a question because my Miele 6350 got a new drive unit. No big deal but in retrospect I found that the pump is unbearably loud. I cleaned everything but the problem remained. Have then installed a new pump but the problem just does not go away. Do you have any idea what this could be or what you can do wrong during assembly so that such a problem occurs? The pump also seems to sit correctly in the "swinging" bearing. The coffee maker also works fine is just a little loud.

Thank you

Check whether a hose is in contact with the housing. If necessary, try to route it differently.

Yes, this is a common problem with this design.
Would be nice if someone could post a picture of the original location of the hoses here.
Helpful for many users

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