How to change front suspension arm on MERCEDES W204 [TUTORIAL AUTODOC]

How to change front suspension arm / control arm on MERCEDES-BENZ C-Class 3 (W204) 2.2 Saloon 2007-2008 [TUTORIAL AUTODOC]
Suspension arm on MERCEDES-BENZ C-Klasse T-modell (S204) (Baujahr 08.2007-08.2014) / MERCEDES-BENZ E-Klasse Cabrio (A207) (Baujahr 01.2010-12.2016) / MERCEDES-BENZ E-Klasse Coupe (C207) (Baujahr 01.2009-12.2016) cars should be changed, as a rule, according to one and the same procedure.
However, there can be slight differences due to specific features of the vehicle design.
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00:00 - MERCEDES W204 - suspension arm / control arm: step-by-step replacement tutorial
00:34 - Clean all joints of the arm.
01:08 - Unscrew the ball joint fastening to the steering knuckle.
01:52 - Remove the arm.
02:40 - Tighten the fastener connecting the ball joint to the steering knuckle.
03:24 - Clean the wheel rim mounting seat.
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Disclaimer:
This video is intended for informational purposes only and does not guarantee achievement of a specific result.
It is recommended that you entrust the installation to highly skilled technicians to ensure the best result.
This video only contains tips and recommendations that could be helpful when carrying out car repairs or replacing parts. AUTODOC is not liable for any harm, injury or property damage incurred while carrying out repairs or replacements that are a result of incorrect use or misinterpretation of the provided information. The user is personally liable for incorrect use of repair equipment, tools, or car parts, in particular when this use poses the risk of injury. AUTODOC strongly recommends taking appropriate safety precautions when carrying out any repair or replacement. Keep in mind that low-quality auto parts may not provide the appropriate level of road safety.
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[@RothBeyondTheGrave]

For anyone mentioning/wondering " you have to torque at ride height, etc", that's exactly what happened when the pole jack was used underneath the ball joint.
He loaded the suspension, bringing it back to the angle it would rest at while loaded. He torqued it, then released the jack. If you're concerned, measure the distance from the wheels center to the top of the fender (before you raise the car). Then after installing new arms, jack up from underneath the ball joint as shown here & recreate that distance (now from the center of the wheel bearing dust cap since wheels are removed).
Otherwise, you would need ramps, wooden blocks, or various professional lifts which no one watching this is likely to have.

[@marchenhold3655]

Thanks very good clear video, presume you have to remove under trays first

[@nickayivor8432]

Thank you 👍

[@faatasiafaatoafe7]

very good work my friend

[@WalkthroughNomad]

Nice Video! Im replacing both upper and lower control arms, in this video it shows the lower control arm. Do you know if the torque specs are the same for the upper control arm?

[@ik6104]

Great video, can you also do a video for track rod ends, tie rods, drop links and other suspension components pls

[@autodocuk]

More videos on MERCEDES-BENZ C (W204) you can see in this playlist - czcams.com/play/PLWep5LzT0sxlFjBs841ezp1WAFDKnRAhZ.html
AUTODOC

[@blackhawkedu1]

Hi, I have a question, is it a Macperson or a double wishbone suspension the front suspension of this car?

[@autodocuk]

In this case, the car has a multi-link suspension and not a MacPherson strut.

[@boigoe]

What's the symptoms of this particular arm..the lower 1?

[@autodocuk]

Some of the symptoms of failure are:
- the hinge of the suspension arm prematurely failed;
- uneven wear of protectors;
- deterioration of maneuverability;
- the vibration of the car with strong deformation of the lever;
- an unpleasant knock and rattle when driving over bumps and bumps.

[@danielcastrejon1741]

is this what MB calls the front THRUST ARMS? or are those different?

[@autodocuk]

Yes, that's the front thrust arm.

[@danielcastrejon1741]

@@autodocuk would you happen to have the part numbers for the driver and passenger side?

[@Maxton720]

What size ball joint puller required?

[@autodocuk]

You can find this information in the technical documentation for repairing your car.

[@246goess]

Let's not forget the wheel alignment after

[@autodocuk]

Yes, it is recommended to make an alignment adjustment after this replacement.

[@raymondharper]

The suspension must be in the resting position before the arm is tightened down otherwise the bush will tear. This fact has not been made clear in the video

[@autodocuk]

Thanks for your clarification. This can be very important for our viewers.

[@therandomstuff204]

Thanks for bringing forward this crucial point. I've watched this video a dozen times to find out at what point one need to tighten the control arms.
When you mean resting position, is that with everything in place and tight (except for the control arms at the frame) when the car sits flat on the ground?

[@raymondharper]

@@therandomstuff204 When the car is level on the ground you can tighten the nuts and bolts on the control arm. Remember, on the SLK at least, the bolts are yield type and after torquing them down, you have to turn them a further 120 degrees.

[@therandomstuff204]

@@raymondharper Thanks for the advice 🙏 I see they also indicate the degrees with the torque specs in this video regarding the w204. Even though its not demonstrated. I'll just make sure checking some other sources.
Once again, much appreciated 😁✌🏻✌🏻

[@willmill409]

What is considered resting position? I'm gonna do this job tomorrow so would be nice to know