How to Fit and Remove Tailgate Gas Struts: A Comprehensive Guide

Tailgate gas struts, also known as tailgate supports or lift supports, are crucial components that assist in lifting and holding open your vehicle's tailgate. Over time, these struts can weaken, leading to a heavy, difficult-to-lift tailgate, or even complete failure. This guide provides a comprehensive walkthrough of how to safely fit and remove tailgate gas struts on most vehicles, covering common issues and safety precautions. Remember to always consult your vehicle's owner's manual for specific instructions and torque specifications.

1. Understanding Tailgate Gas Struts:

Tailgate gas struts are hydraulic cylinders filled with pressurised gas (typically nitrogen). They operate on a simple principle: as the strut extends, the gas compresses, providing the force needed to lift the tailgate. The strut's length and force are precisely matched to the weight of the tailgate. Each strut typically has two mounting points: one attached to the tailgate and the other to the vehicle body.

2. Identifying Your Tailgate Struts:

Before beginning, it's crucial to identify the correct gas struts for your vehicle. The struts are usually marked with a part number or code. You can find this information:

• On the strut itself: Look for a label or stamped marking.
• In your vehicle's owner's manual: The manual should list the part numbers for all components, including the gas struts.
• Using an online parts catalogue: Enter your vehicle's make, model, and year into an online parts database (e.g., Euro Car Parts, Halfords, etc.) to find the correct struts.
• At your local parts supplier: A knowledgeable parts supplier can help you identify the correct struts based on your vehicle's details.

Incorrectly sized or specified struts can lead to damage to your tailgate or vehicle body.

3. Tools and Materials Required:

• New tailgate gas struts: Ensure you purchase the correct struts for your vehicle model.
• Screwdriver(s): You'll likely need both Phillips head and flathead screwdrivers. The type will depend on your vehicle's fastening system.
• Socket set: A socket set may be necessary depending on the type of fasteners used.
• Wrench(es): May be required for some vehicles.
• Penetrating oil (optional): If the fasteners are rusted or seized, penetrating oil can help loosen them.
• Gloves: Protect your hands from dirt and potential injuries.
• Safety glasses: Protect your eyes from flying debris.
• Jack stands (optional): For added safety, consider using jack stands to support the tailgate while working.

4. Removing Old Tailgate Gas Struts:

Safety First:

Before starting, ensure the vehicle is parked on a level surface and the handbrake is firmly engaged. Never work under a raised tailgate without proper support.

1. Open the tailgate: Fully open the tailgate to access the gas struts.
2. Locate the strut mounting points: Identify the points where the struts attach to the tailgate and the vehicle body.
3. Apply penetrating oil (optional): If the fasteners appear rusted or seized, liberally apply penetrating oil and allow it to soak for several minutes.
4. Remove the fasteners: Carefully remove the fasteners securing the gas struts. Use the appropriate tools (screwdriver, socket, wrench) and avoid applying excessive force, which could strip the fastener heads.
5. Remove the gas struts: Once the fasteners are removed, carefully detach the gas struts from their mounting points. The struts may be under pressure, so be prepared for them to spring out slightly.

5. Fitting New Tailgate Gas Struts:

1. Inspect the mounting points: Check the mounting points on both the tailgate and vehicle body for any damage or corrosion. Clean and repair any damage before proceeding.
2. Align the new struts: Carefully align the new gas struts with their respective mounting points.
3. Attach the struts: Secure the struts to the mounting points using the appropriate fasteners. Tighten the fasteners securely, but avoid over-tightening, which could damage the threads or the struts themselves.
4. Test the tailgate: Gently lift and lower the tailgate several times to ensure the new struts are functioning correctly and the tailgate opens and closes smoothly.

6. Common Problems and Troubleshooting:

• Stripped fasteners: If you strip a fastener head, you may need to use a bolt extractor or drill it out.
• Seized fasteners: Penetrating oil is your best friend here. Allow ample time for it to penetrate the threads. Gentle tapping with a hammer may also help.
• Incorrect strut length or force: Using incorrectly sized struts will result in a tailgate that is either too difficult or too easy to lift. Always use the correct struts specified for your vehicle.
• Strut failure: If a new strut fails to function correctly, it may be defective. Contact the supplier for a replacement.

7. Specific Considerations for Different Vehicle Types:

The process of fitting and removing tailgate gas struts can vary slightly depending on the vehicle's make, model, and year. Some vehicles may have more complex mounting systems or require specialized tools. Always consult your vehicle's owner's manual for specific instructions. Some vehicles may require access from inside the tailgate or removal of interior trim panels.

8. Safety Precautions – A Recap:

• Always work on a level surface with the handbrake engaged.
• Never work under a raised tailgate without proper support (jack stands recommended).
• Wear safety glasses to protect your eyes.
• Wear gloves to protect your hands.
• Use the correct tools and avoid excessive force.
• If unsure about any step, consult a qualified mechanic.

9. Disposal of Old Gas Struts:

Old gas struts should be disposed of responsibly. Contact your local council or waste disposal facility for information on the correct disposal method. Do not puncture or attempt to dismantle the struts yourself, as they contain pressurised gas.

Conclusion:

Replacing tailgate gas struts is a relatively straightforward task that can significantly improve the functionality and convenience of your vehicle. By following the steps outlined in this guide and taking the necessary safety precautions, you can successfully fit and remove these essential components. However, if you are uncomfortable performing this task yourself, it's always best to consult a qualified mechanic. Remember that this guide provides general instructions, and specific procedures may vary depending on your vehicle's make and model. Always refer to your vehicle's owner's manual for detailed instructions and safety information.