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W639 bearing grumble

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by hockeyanimal, Dec 27, 2012.

  1. hockeyanimal

    hockeyanimal Active Member

    Messages:
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    Joined:
    Oct 1, 2010
    Location:
    Narangba , Queensland Australia
    Your Mercedes:
    1977 450SEL 4.5, 1986 230TE 2.3, 1990 190E 2.0 carb, 1996 E220 2.2, 2005 Vito 2.1 deisel
    At least that is what I thought it was. Initially (about 4 weeks ago) there was a grinding from the rear of the vehicle but that stopped after 20km or so. Must get in and check the rear wheel bearings thinks I. Jacked the old girl up but couldn't find anything wrong. The grinding had subsided into a grumble that started at about 30km/h and got worse with speed, not too bad, just there and annoying Today the old girl went in for a service and I've been informed I have a bent LH drive shaft. How the hell did that happen, the thing is 25mm or so of hardened steel? Its protected by the wishbone rear suspension and there is no damage under the vehicle. Any suggestions greatfully received
     
  2. television

    television Always remembered RIP

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    164,074
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    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Could it be that the bearing has collapsed completely and the ½ shaft was flopping around looking as though it was bent, I though that was impossible to bend one as they snap rather than bend
     
  3. OP
    hockeyanimal

    hockeyanimal Active Member

    Messages:
    32
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    Joined:
    Oct 1, 2010
    Location:
    Narangba , Queensland Australia
    Your Mercedes:
    1977 450SEL 4.5, 1986 230TE 2.3, 1990 190E 2.0 carb, 1996 E220 2.2, 2005 Vito 2.1 deisel
    Got under the old girl with a dial indicator on a magnetic base and the shaft is bent. still dont know how that happened but it has. Next question is a few years ago I knew a guy that reco'd the drive shafts and I know that the shaft between the two Cv's are replaceable, so any suggestions how to source one? Are aftermarket available?
     
  4. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Not that I know of, perhaps from a breaker, I just do not know how you could bend one
     
  5. hmang

    hmang Senior Member

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    856
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    Mar 9, 2007
    sounds like you're going to be replacing a bearing anyway if there's grinding / grumbling .
    so why not take apart and put the 1/2 shaft on v blocks for a proper run out check.
     

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