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Transmission / drive train noises

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by rogerwt, May 15, 2017.

  1. Arudge

    Arudge Senior Member

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    Location:
    Cradley Heath
    Your Mercedes:
    CLK200 2000 Kompressor
    image.jpg This is a bearing track that has Broken up and is the sort of damage I'd expect to see in the OP case.

    Why? Bad material, bad heat treatment (too hard) or bearing too tight and the subsequent heat generated will destroy the surface.

    If you look closely at the image you may notice vertical lines, this is possible heat bloom on this roller bearing, suggesting it's been over tightened leading to complete failure.

    I'm sorry but MB do not use super high quality bearings, you'll find exactly the same sort in a washing machine!
     
    Last edited: May 18, 2017
  2. malcolm210

    malcolm210 Senior Member

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    Thanks for the update on the issue as a fellow 212 owner I share your concern on quality

    The symptoms certainly pointed to differential bearing problems but as you say MB perceived quality leads to thinking that at such a low mileage this is unlikely

    I'm sure that there can't have been many failures of this type as news travels fast in a global way nowadays. As above I would have the bearings inspected and send the report to MB for comment and ask whether they can identify the other vehicles manufactured using the same batch of bearings and whether they have failed prematurely.

    Hope you get a better resolution especially as you've kept faith with the dealer, most including myself would have sourced a secondhand replacement.
     

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