Download 2004 Mercedes-Benz CLK270 (C209) OEM Download Service & Repair Manual Software –

Replacing the struts on a Mercedes-Benz CLK270 (C209) is a task that requires careful attention to detail and the right tools. click here for more details on the download manual…..

The struts are part of the vehicle’s suspension system and play a vital role in ride comfort and handling. Below is a step-by-step guide for replacing the struts, including detailed descriptions of each component involved in the process.

### Tools and Materials Required

1. **Tools:**
– Socket set (including 10mm, 12mm, 13mm, 15mm, 17mm, 19mm sockets)
– Ratchet and extensions
– Torque wrench
– Pliers
– Flathead and Phillips screwdrivers
– Strut spring compressor
– Hammer
– Jack and jack stands
– Wheel chocks
– Safety goggles and gloves

2. **Materials:**
– New struts (OEM or high-quality aftermarket)
– New strut mounts (if necessary)
– New strut bolts (if necessary)
– Lubricant (for bolts and bushings)
– brake cleaner (optional)

### Step-by-Step Procedure

#### Step 1: Prepare the Vehicle

1. **Park the Vehicle:** Ensure the vehicle is parked on a flat surface and the ignition is off.
2. **Chock the Wheels:** Place wheel chocks behind the rear wheels to prevent rolling.
3. **Loosen Lug Nuts:** Using a lug wrench, slightly loosen the lug nuts on the front wheels but do not remove them yet.

#### Step 2: Lift the Vehicle

1. **Jack Up Vehicle:** Use a hydraulic jack to lift the front of the vehicle.
2. **Secure with Jack Stands:** Place jack stands under the vehicle’s frame to ensure it is securely elevated.
3. **Remove Front Wheels:** Now you can remove the lug nuts completely and take off the front wheels.

#### Step 3: Remove the Strut Assembly

1. **Locate Strut Assembly:** The strut assembly is connected to both the wheel hub and the vehicle’s body. It consists of the strut, strut mount, and coil spring.
2. **Remove brake Line Bracket:** If applicable, remove the bracket holding the brake line to the strut using a 10mm socket. Be careful not to damage the brake line.
3. **Remove Anti-Roll Bar Link:** Using a 17mm socket, remove the bolt connecting the anti-roll bar link to the strut.
4. **Remove Strut-to-Hub Bolts:** locate the two bolts securing the strut to the wheel hub. Use a 19mm socket to remove these bolts.
5. **Remove the Strut Mount Nuts:** open the hood and locate the strut mount on top of the strut tower. Remove the three nuts using a 13mm socket. You may need to hold the strut shaft with an Allen key or similar tool to prevent it from spinning.
6. **Free the Strut:** Once everything is disconnected, gently pull the strut down from the wheel hub and remove it from the vehicle.

#### Step 4: Disassemble the Strut

1. **Use a Strut Spring Compressor:** Carefully compress the coil spring using a strut spring compressor. Follow the instructions provided with the compressor.
2. **Remove the Strut Cap:** With the spring compressed, use a 17mm socket to remove the nut at the top of the strut. Be cautious as the spring is under tension.
3. **Remove the Spring and Mount:** Remove the coil spring from the strut, followed by the strut mount. Inspect the mount for wear and replace it if necessary.

#### Step 5: Install New Strut

1. **Attach New Strut Mount:** If you have a new strut mount, place it on top of the new strut.
2. **Install the Coil Spring:** Place the coil spring onto the new strut. Make sure it is seated properly in the mount.
3. **Reinstall Strut Cap:** tighten the strut cap nut securely using the torque specifications from the service manual.
4. **Release Spring Tension:** Carefully release the tension on the strut spring compressor.

#### Step 6: Reinstall the Strut Assembly

1. **Position the Strut:** Lift the new strut assembly into place in the strut tower.
2. **Secure Strut Mount Nuts:** download Mercedes Benz CLK270 C209 OEM workshop manual Hand-tighten the three nuts on top of the strut mount.
3. **Connect to Wheel Hub:** Align the strut with the wheel hub and insert the bolts. Use a torque wrench to tighten them to the manufacturer’s specifications.
4. **Reconnect Anti-Roll Bar Link:** Reattach the anti-roll bar link to the strut and tighten the bolt.
5. **Reattach brake Line Bracket:** Secure the brake line to the strut if applicable.

#### Step 7: Repeat for the Other Side

1. **Repeat Process:** If you are replacing both struts, repeat steps 3 to 6 for the other side.

#### Step 8: Reinstall Wheels and Lower Vehicle

1. **Reattach Wheels:** Place the front wheels back onto the hubs and hand-tighten the lug nuts.
2. **Lower Vehicle:** Use the jack to carefully lower the vehicle back to the ground.
3. **Tighten Lug Nuts:** Once the vehicle is on the ground, use a torque wrench to tighten the lug nuts to the manufacturer’s specifications.

#### Step 9: Final Checks

1. **Inspect Work:** Double-check all connections and ensure everything is tightened as per specifications.
2. **Test Drive:** Take the vehicle for a test drive to ensure that the new struts are functioning properly and that there are no unusual noises.

### Conclusion

Replacing the struts on a Mercedes-Benz CLK270 C209 can significantly improve ride quality and handling. Always refer to the vehicle’s service manual for specific torque specifications and additional details. If you’re unsure about any part of the process, consider seeking professional assistance.
The crankshaft pulley, also known as the harmonic balancer, is a vital component in an internal combustion engine that plays a crucial role in the overall functionality and efficiency of the engine. It is typically located at the front end of the crankshaft, where it serves multiple purposes. One of its primary functions is to drive various engine accessories, such as the alternator, power steering pump, water pump, and air conditioning compressor, through belts that are attached to the pulley. This allows the engine to efficiently transfer rotational energy to these components, ensuring that they operate smoothly and effectively.

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