Lift support shock struts, also known as gas springs or lift supports, are essential components in vehicles, helping to support the weight of heavy panels like hoods, trunks, hatchbacks, or tailgates. They provide a smooth and controlled lift and hold for these panels, ensuring safety and convenience. Without functioning lift support struts, you’d have to struggle to hold the panel up manually, which can be both inconvenient and hazardous. In this article, we’ll explore what lift support shock struts are, how they work, common signs of failure, and what you can expect when replacing them.
What Are Lift Support Shock Struts?
Lift support struts are gas-filled cylinders that use pressurized nitrogen gas and a small amount of hydraulic oil to create a controlled lifting and holding force. These struts are designed to counteract the weight of heavy panels, allowing them to open and stay open effortlessly. They are commonly found in:
Trunks or Tailgates: Assisting in lifting and holding the door in place.
Hoods: Allowing easy access to the engine bay.
Hatchbacks: Providing lift and support for rear cargo access.
Lift supports are compact yet powerful and are tailored to specific applications based on weight and size.
How Do They Work?
The key to a lift support shock strut’s operation lies in the pressurized gas inside. When you open a trunk or hood, the gas expands, providing an upward force that counteracts gravity. Hydraulic oil within the strut ensures smooth, controlled movement to avoid sudden or jerky lifting or closing motions. This combination of gas and hydraulic damping makes lift support struts highly efficient and safe.
Signs Your Lift Support Struts Need Replacement
Over time, lift supports can lose their effectiveness due to gas leakage or wear and tear. Common signs of failure include:
Inability to Hold Panels Open: The panel starts to sag or falls unexpectedly.
Difficulty Lifting: Requires extra effort to open the panel.
Noisy Operation: Creaking or popping sounds during opening or closing.
Visible Damage: Signs of oil leakage or physical damage to the strut.
Ignoring faulty struts can lead to inconvenience and even injuries if a heavy panel suddenly falls.
Cost of Replacing Lift Support Struts
The cost to replace lift support struts is relatively affordable compared to other vehicle components. Here’s a breakdown:
Parts Cost: Replacement struts typically cost between $20 and $70 each, depending on the vehicle and quality of the part.
Labor Cost: If you have a professional handle the replacement, labor costs range from $50 to $100. However, many people opt for a DIY replacement since the process is usually straightforward.
How to Replace Lift Support Struts
Replacing lift support struts is often a simple task that requires minimal tools. The steps typically include:
Propping Open the Panel: Use a temporary support like a stick or another person to hold the panel open.
Removing the Old Strut: Use a screwdriver to release the retaining clips.
Installing the New Strut: Snap the new strut into place and ensure it is securely attached.
Always refer to your vehicle’s manual for specific instructions.
Tips for Maintaining Lift Support Struts
Inspect Regularly: Check for signs of wear or leakage.
Avoid Overloading: Excessive weight on the supported panel can strain the struts.
Replace in Pairs: To ensure balanced support, replace both struts at the same time.
Conclusion
Lift support shock struts play an integral role in vehicle safety and functionality by providing reliable lifting and holding power for heavy panels. While they are durable, they do wear out over time, often after 4–6 years of use. By recognizing the signs of failure and replacing them promptly, you can ensure the continued convenience and safety of your vehicle. With affordable replacement costs and an easy installation process, keeping your lift supports in top condition is a straightforward task.