1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

W209 CLK front suspension arm "setting bolt".

Discussion in 'Suspension, Steering & Brakes' started by Droverunner, Aug 10, 2018.

  1. Droverunner

    Droverunner Senior Member

    Messages:
    350
    Likes Received:
    118
    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    Just part way through fitting a new offside lower (rear) arm on the front suspension due to a clonking balljoint and weak bush. The new one is a Febi and near identical to the old one in all respects. The Febi arm came as a kit with new mounting bolt and washers/nut.

    The old bolt was quite standard and could only enable the arm at the inner bush end to be mounted in the centre of the elongated hole in the bush. The bolt is held centrally by some "fins" inside the bush.

    The new arm is exactly the same with the elongated hole and centralising fins. However the bolt it came with has two grooves machined along its length that enable it to engage with the fins and set the bush about 0.5mm in or out from the central position.

    I will fit the arm centrally as the old one but wonder when you would ever need to change the effective arm length with this new bolt? Front susp arm bolts.JPG Front susp arm.JPG
     
    Jim2 likes this.
  2. Oldspanners

    Oldspanners Senior Member

    Messages:
    249
    Likes Received:
    138
    Joined:
    Oct 30, 2017
    Your Mercedes:
    C CLASS 2004 C180
    The only time you would need to do that is to alter the camber.
    Just ensure when you tighten it up it's at the ride height of your car on level ground.
     
    Jim2 likes this.
  3. onefortheroad

    onefortheroad Senior Member

    Messages:
    691
    Likes Received:
    110
    Joined:
    Dec 8, 2015
    Location:
    uk.
    Your Mercedes:
    E
    I'd just use the old bolt tbh if the car drove fine and tyres wore evenly. Do keep the camber bolt just in case .
     
    Jim2 likes this.
  4. OP
    Droverunner

    Droverunner Senior Member

    Messages:
    350
    Likes Received:
    118
    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    Thanks guys, the old bolt is fine so will use that centralised and keep the setting bolt in case it was ever needed.
     
    Jim2 likes this.
  5. Oldspanners

    Oldspanners Senior Member

    Messages:
    249
    Likes Received:
    138
    Joined:
    Oct 30, 2017
    Your Mercedes:
    C CLASS 2004 C180
    This may be of use.
     

    Attached Files:

    Jim2 likes this.
  6. OP
    Droverunner

    Droverunner Senior Member

    Messages:
    350
    Likes Received:
    118
    Joined:
    Aug 2, 2017
    Location:
    West Cambridgeshire
    Your Mercedes:
    2007 CLK 220 CDI Sport AMG pack.
    Cheers OS, confirmed the Haynes torques were correct.

    Job completed now. Actually quite easy apart from the faff of dropping the mid section undertray to reach the bolt head... and the slightly tight access to torque the bolt with the car on the ground.
     
    Jim2 likes this.
  7. Oldspanners

    Oldspanners Senior Member

    Messages:
    249
    Likes Received:
    138
    Joined:
    Oct 30, 2017
    Your Mercedes:
    C CLASS 2004 C180
    I measured the wheel centre to the wheel arch (approx. 37cm on mine) when on the level and jacked up the suspension below the ball joint to match this to make it easier. The only problem on the drivers side was to get a socket shallow enough to get access to the nut between the cross member and the steering rack boot with the torque wrench.
     
    onefortheroad and Jim2 like this.

Share This Page