Replacing Strut Mounts. Workshop Advice - LEMFÖRDER

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Instructions on how to
Replace Strut Mounts

The top fastening of the suspension strut is attached to the chassis via the strut mount – also known as the suspension strut mount. Since the strut mount must have both a damping force and a rotatable mounting for unhindered steering resetting, there are strict requirements for its function and wear resistance. Checking the strut mounts on a regular basis will ensure the vehicle is safe.

A worn or defective strut mount can be recognized by various symptoms. These include:
• Squeaking during spring movements of the chassis
• Poor cornering
• Crackling noises during steering wheel movements
• Restricted resetting of the steering after cornering
• Knocking sounds when driving over uneven surfaces

If the suspension strut mount has been checked and a defect has been detected, it should be replaced as described below. Like other chassis components, suspension strut mounts should always be replaced in pairs.

Two-parts suspension strut mount.

The top fastening of the suspension strut is attached to the chassis via the strut mount – also known as the suspension strut mount. Since the strut mount must have both a damping force and a rotatable mounting for unhindered steering resetting, there are strict requirements for its function and wear resistance. Checking the strut mounts on a regular basis will ensure the vehicle is safe.

A worn or defective strut mount can be recognized by various symptoms. These include:
• Squeaking during spring movements of the chassis
• Poor cornering
• Crackling noises during steering wheel movements
• Restricted resetting of the steering after cornering
• Knocking sounds when driving over uneven surfaces

If the suspension strut mount has been checked and a defect has been detected, it should be replaced as described below. Like other chassis components, suspension strut mounts should always be replaced in pairs.

Two-parts suspension strut mount.

General note!

Our useful tips provide only an overview. The installation instructions and operating instructions provided by the vehicle manufacturer and the warning and safety instructions contained therein must be observed! All work must be performed by a trained professional. The pictures used and the procedure described in our tips are examples and may vary depending on the vehicle manufacturer and axle design.

Step by step: Replacing a strut mount

  • Step 1 – Remove the wheels.

    1. First, raise the vehicle using a two-pillar hoist and remove the wheels from the axle.

    1. First, raise the vehicle using a two-pillar hoist and remove the wheels from the axle.

  • Step 2 – Remove the suspension strut and clamp the fixture.

    2. Remove the suspension strut according to the vehicle manufacturer's specifications and clamp it in an appropriate fixture.
    WARNING: Risk of serious injury caused by the sudden release of springs. Always use a suitable spring tensioner.

    2. Remove the suspension strut according to the vehicle manufacturer's specifications and clamp it in an appropriate fixture.
    WARNING: Risk of serious injury caused by the sudden release of springs. Always use a suitable spring tensioner.

  • Step 3 – Compress the suspension spring using a spring tensioner.

    3. Compress the suspension spring using a spring tensioner until it is released from the seat of the suspension strut mount.

    3. Compress the suspension spring using a spring tensioner until it is released from the seat of the suspension strut mount.

  • Step 4 – Remove the nut on the damper connecting rod.

    4. The nut on the damper connecting rod can now be removed. To do this, the connecting rod must be held securely using a suitable tool. Then the old strut mount can be removed.

    4. The nut on the damper connecting rod can now be removed. To do this, the connecting rod must be held securely using a suitable tool. Then the old strut mount can be removed.

  • Step 5 – Position the new strut mount in its installation position.

    5. Position the new strut mount in its installation position. In doing so, check in particular that the lower part of the mount is seated correctly on the suspension spring.

    5. Position the new strut mount in its installation position. In doing so, check in particular that the lower part of the mount is seated correctly on the suspension spring.

  • Step 6 – Fit the bolts and fastening components.

    6. Fit all bolts and fastening components and tighten the lock nuts to the torque specified by the vehicle manufacturer.

    6. Fit all bolts and fastening components and tighten the lock nuts to the torque specified by the vehicle manufacturer.

  • Step 7 – Carefully release the spring tensioner.

    7. The spring tensioner can now be carefully released. In the process, continue to check that the suspension spring is placed on the strut mount and on the suspension strut plate correctly.

    7. The spring tensioner can now be carefully released. In the process, continue to check that the suspension spring is placed on the strut mount and on the suspension strut plate correctly.

  • Step 8 – Refit the suspension strut in the vehicle.

    8. Now the entire suspension strut can be removed from the holder and refitted in the vehicle.

    8. Now the entire suspension strut can be removed from the holder and refitted in the vehicle.

  • Step 9 – Refit the wheels.

    9. Then refit the wheels and perform a full wheel alignment. Finally, carry out a test drive.

    9. Then refit the wheels and perform a full wheel alignment. Finally, carry out a test drive.

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