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How to replace W210 ARB drop lilnks and bushes

Discussion in 'Suspension, Steering & Brakes' started by brandwooddixon, Feb 13, 2008.

  1. brandwooddixon

    brandwooddixon Senior Member

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    Joined:
    Jul 31, 2006
    Location:
    Wolverhampton
    Your Mercedes:
    CL500 - 2004 model with loads of toys
    Its a common problem with W210s, especially for areas infested with speed calming measures, your drop links will become worn, resulting in knocking from the front suspension and high frequency vibrations after passing over bumps.

    Replacement of these parts can be performed with the vehicle on ramps, although if you have access to a lift it would undoubtably be easier.

    Time taken: about 1.5 hours
    cost:
    drop links £6.70 +VAT each
    ARB bush £3.95+VAT
    Bolts 90p+VAT each. or treat the old ones with thread lock when refitting

    Tools:
    13mm or 1/2" socket
    T50 Torx bit
    Silicon spray grease
    Torque wrench

    Here're my pictures for this operation:
    [​IMG]

    [​IMG]

    1. If it hasn't already been done place a mark on the anti-roll bar so that when you come to reinstall it you can ensure that it is located centrally to the chassis. I put a blob of paint in the middle in line with the centre of the gearbox.

    2. Undo the T50 torx bolt at the bottom of the drop link. These bolts will probably have been treated with thread lock and may be troublesome to remove.

    3. Undo the four 13mm bolts which attach the anti-roll bar to the chassis. Be careful, the bar is heavy and give you a good bruise if you're not ready.

    4. With the bar removed you'll need to remove the old drop links from it. They are only a push fit but will probably be troublesome.

    5. The main ARB bush holder will come apart into two pieces. Try and remember the location of the heat shield for reinstallation. Slide the bush off the end of the bar.

    6. If it's been a long time since they were last replaced you'll probably notice some bad pitting and rust underneath the old bushes. Best to clean and treat.

    7. Spray a light covering of silicon grease or something similar over the bar to make it easier to install the new bushes.

    8. The new drop links are handed. It's best to install them before installing the ARB as when underneath the vehicle you may not be able to get sufficient leverage to pop them over the ends of the bar. The rubber "ear" faces away from the lower wishbone and towards the car centre line.

    9. Replacement is now the reverse of removal. Don't tighten up the bolts until you are sure that the ARB is centralised.


    Torque settings:
    ARB bush bolts to chassis: 20Nm
    Drop link to lower wishbone: 80Nm
     
  2. thejap

    thejap Guest

    Attempted mine this week and one of the bolts on each of the anti-roll bar brackets was cross-threaded and bent. This is the first time this job has been attempted so must of happened in the factory. Had to go to the local garage and get the bolts removed and replaced so I can have another go at the weekend. I have changed the drop links one side at a time, bit fiddly but can be done. Will be trying to change the drop-link and antiroll bar bush one side at a time if there is enough clearance to slide the bush off.
     
  3. Parrot of Doom

    Parrot of Doom Senior Member

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    Manchester
    Your Mercedes:
    Was an E300TD, now a Lexus LS400
    Just did mine today. A fair bit more difficult than I thought, in the main due to getting the links on and off (they're damn tight).

    And I forgot to put the heatshield back on. Dammit.
     
  4. anyweb

    anyweb Senior Member

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    Sweden
    Your Mercedes:
    w212,w120 (petrol),w120 (diesel)
    good article, i've copied it to the DIY section

    cheers
    anyweb
     
  5. Brucey

    Brucey Member

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    Joined:
    Jan 7, 2010
    Location:
    St Florent sur Auzonnet
    Your Mercedes:
    E220 CDi W210 (2001) LHD
    I have ordered a set of drop links and will be fitting them as soon as they arrive. I have already replaced the bottom ball joints but there is still a bit of suspension noise on uneven surfaces so I hope changing the drop links will do the trick. Local garage said the wheel bearings needed replacing but that was without even looking at the car...

    The suspension noise seems to disappear as soon as the vehicle is put into a bend, which suggests that there's free play in the links somewhere.

    Will update on result when done.
     
    Last edited: Feb 28, 2010

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