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Will CLK 2007 220CDI have alternator clutch?

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by Droverunner, Sep 19, 2017.

  1. Droverunner

    Droverunner Senior Member

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    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    At 115K mls I'm doing a water pump, tensioner, idler pulleys and aux belt change. I wondered though if I should have an alternator clutch on this car? When I had the aux belt off the other day I noticed the alternator pulley was solid with no clutch action. There is no rattling or noise from the alternator and if it shouldn't have a clutch then no problem... if it should and mine is seized I'll replace it.

    Is there any way from looking to know if you have a clutch or not?

    If I did find a replacement needed is this tool OK for the job... http://www.ebay.co.uk/itm/22pcs-Alt...683425&hash=item3acf288786:g:wtQAAOSwFnFV~maD

    I see there are cheaper tools like this... http://www.ebay.co.uk/itm/Mercedes-...epid=0&hash=item3aec6a704d:g:BGUAAOxykUZTh7Kp but I assume to need something to go up the middle to hold the alternator shaft still??
     
  2. om613

    om613 Senior Member

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    Joined:
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    Location:
    london
    Your Mercedes:
    S210 E320cdi, S123 240Td
    You'll almost certainly have a freewheel pulley.
    My 2002 E class did.
    I bought a cheap £5 tool and chopped down a TX bit to go through it.
    They can be quite tight to crack off...
     
  3. OP
    Droverunner

    Droverunner Senior Member

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    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    Thanks. I'm doing the water pump etc tomorrow and will look at the alt pulley more closely. I think once the plastic cap is prised off the front of the pulley it will be possible to see if it is a clutch type or not.

    Re the tool I'll just get the cheap spline thing as I have loads of torx bits I could make fit. I wonder though if anyone knows the exact type I need as they seem to have different amounts of splines.
     
  4. OP
    Droverunner

    Droverunner Senior Member

    Messages:
    220
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    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    Did the water pump and pulleys swap today. Popped the plastic cap off the alt pulley and it's clearly a clutch type that's seized solid so I'll get a pulley and the tool.
     
  5. OP
    Droverunner

    Droverunner Senior Member

    Messages:
    220
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    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    Last edited: Oct 9, 2017
  6. OP
    Droverunner

    Droverunner Senior Member

    Messages:
    220
    Likes Received:
    65
    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    om613 likes this.

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