Replacing the control arm on a Mercedes Benz B Class B200 is a task that involves several steps. click here for more details on the download manual…..

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While some mechanical experience can be beneficial, I’ll break it down in a clear and simple manner. Please remember that working on your vehicle can be dangerous If not done correctly, so If you’re uncertain, it’s best to consult with a professional mechanic.

### Tools and materials You’ll Need:
1. **Jack and Jack Stands:** To lift the car safely.
2. **Socket Set:** Various sizes (usually metric).
3. **Wrenches:** For loosening and tightening bolts.
4. **Torque Wrench:** To ensure bolts are tightened to the correct specifications.
5. **Pry Bar:** To help remove old parts If they are stuck.
6. **Hammer:** For any stubborn parts.
7. **Replacement Control Arm:** Make sure it’s the correct part for your B Class B200.
8. **Safety Glasses and Gloves:** To protect yourself while working.

### Steps to Replace the Control Arm:

1. **Safety First:**
– Park the car on a flat, stable surface.
– Turn off the engine and remove the key.
– Engage the parking brake.

2. **Lift the Vehicle:**
– Use the jack to lift the front of the car.
– Secure the car on jack stands to ensure it doesn’t fall.

3. **Remove the Wheel:**
– Use a socket wrench to loosen and remove the lug nuts.
– Take off the wheel to access the control arm.

4. **Locate the Control Arm:**
– The control arm is a large metal piece that connects the wheel hub to the vehicle’s frame.
– It usually has a ball joint at one end and bushings at the other.

5. **Disconnect the Control Arm:**
– Look for bolts that hold the control arm in place. You will typically find:
– A ball joint bolt (or nut) that connects the control arm to the wheel hub.
– Bolts connecting the control arm to the vehicle frame.
– Use the appropriate socket or wrench to remove these bolts. If they’re tight, you may need to use a hammer to tap them loose.

6. **Remove the Old Control Arm:**
– Once all bolts are removed, carefully pull the control arm out. You may need to wiggle it a bit If it’s stuck.

7. **Install the New Control Arm:**
– Position the new control arm where the old one was.
– Insert the bolts and loosely tighten them. Do not fully tighten yet.

8. **Reconnect the Ball Joint:**
– Align the ball joint with the wheel hub and insert the bolt or nut.
– Tighten it down securely.

9. **Tighten All Bolts:**
– Once everything is in place, use a torque wrench to tighten all bolts to the manufacturer’s specified torque settings (you can find these in the repair manual or online).

10. **Reinstall the Wheel:**
– Put the wheel back on and hand-tighten the lug nuts.
– Lower the car from the jack stands.
– Once on the ground, use the socket wrench to tighten the lug nuts fully in a criss-cross pattern to ensure even pressure.

11. **Test Drive:**
– Before taking a long drive, do a short test drive to ensure everything feels right.
– Listen for any unusual noises and check If the car feels stable.

### Final Notes:
– Always refer to a repair manual for specific torque settings and additional details.
– If at any point you feel unsure or uncomfortable, don’t hesitate to reach out to a professional mechanic.
– Remember to dispose of the old control arm and any waste materials properly.

By following these steps carefully, you should be able to replace the control arm on your Mercedes Benz B Class B200. Good luck!
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