Gas struts are handy components that you probably rely on without realising it, whether they’re helping to hold your car boot open or making furniture easier to lift and close. However, it’s not uncommon for them to stop working properly over time. When this happens, it can be a real inconvenience. If your gas strut is not working as it should, don’t worry – this guide will walk you through the possible reasons why, how to troubleshoot the issue, and what you can do to repair or replace it.
How gas struts work
Gas struts (also called gas springs) are filled with compressed nitrogen gas, which helps them provide controlled lifting and lowering. When you open something like a car boot or a cupboard, the gas inside the spring pushes against a piston, allowing smooth, easy movement. The struts help hold objects in place, so you don’t have to struggle to keep things open or closed manually.
Over time, though, these struts can lose their effectiveness, leading to problems that you need to repair. Let’s look at the most common signs of gas struts failing and what might be causing the issue.
Signs your gas strut is not working
Before you dive into fixing the issue, it’s important to recognise the warning signs that your gas strut is not performing like it used to. Here’s what to look out for:
- Difficulty opening or closing: If you find it harder than usual to open or close something that uses gas struts, it could mean they’re losing their strength.
- Sudden drops: If something that’s supposed to stay open – like a car boot – suddenly slams shut, the gas struts are likely failing.
- Sluggish or jerky movement: When your gas strut loses pressure, they can no longer provide smooth motion, and you’ll notice slow or uneven movement.
- Leaking fluid: If you see oil leaking from the strut, this is a clear sign that the internal seals are damaged and the spring is on its way out.
- Noisy operation: If your gas strut is making squeaking or creaking sounds, it may be suffering from wear and tear or rust.
Why gas struts stop working
There are several reasons why gas struts can stop working effectively. Understanding the root cause can help you decide whether you can repair the gas struts or if they need replacing altogether.
#1 Gas leakage
One of the most common reasons for gas spring failure is a slow gas leak. Over time, the seals in the spring can degrade, allowing nitrogen gas to escape. Once enough gas has leaked out, the spring won’t have the pressure needed to function properly.
Solution: Unfortunately, a gas strut is not designed to be refilled, so if they’re leaking gas, you’ll need to replace them.
#2 Worn-out seals
The seals inside gas struts keep the gas and oil contained, ensuring they are working smoothly. Over time, these seals can wear out, especially if they’re exposed to dust, dirt, or extreme temperatures.
Solution: If the seals have failed, the spring will likely leak oil or gas. In most cases, replacing the spring is the best option since repairing seals is rarely feasible.
#3 Incorrect load
Gas struts are designed to handle a specific load. If you’ve got struts installed that are not rated for the weight they’re supposed to support, they’ll stop working much faster.
Solution: Always check the load rating of your gas strut and make sure it’s suitable for your application. Using struts rated for a heavier load will help prevent early failure.
#4 General wear and tear
Like most mechanical components, gas struts naturally wear out with regular use. Constant compression and decompression can take its toll, especially if the struts are not regularly maintained.
Solution: To extend the life of your gas strut, try to clean it periodically and keep it free from dirt and debris. If it has already worn out, though, replacement is the best option.
#5 Rust and corrosion
If your gas strut is exposed to moisture, it can start to rust. Once rust sets in, it can weaken the metal components and damage the seals, causing the strut to stop working.
Solution: Inspect the struts for rust or corrosion. If it’s minor, you can clean the struts and apply rust protection. However, if the rust has compromised the strut’s performance, you’ll need to replace it.
How to troubleshoot and repair gas struts
If you’re not sure why your gas strut is not working properly, here’s a step-by-step guide to help you troubleshoot the problem.
- Look for leaks: Check the gas strut for visible signs of leaking gas or oil. If you notice any leaks, it’s likely the spring is beyond repair and will need replacing.
- Test the strut’s strength: Try manually compressing the spring to see how much resistance it offers. If it’s too easy to compress, the spring may have lost gas pressure and won’t be strong enough to hold things open.
- Inspect for rust: Look for any rust or corrosion on the metal parts of the strut. Rust can damage the strut’s ability to operate smoothly, and if it’s severe, you’ll need to replace the strut.
- Check the load rating: Make sure the gas strut is appropriate for the weight it’s supposed to support. If it’s too weak for the job, it will need replacing with a stronger strut.
Can a gas spring be repaired?
You can repair a gas spring in some cases, but it largely depends on the type of damage. Gas struts are generally designed to be replaced rather than repaired, as fixing issues like internal pressure or damaged seals can be quite challenging. However, if the problem is relatively minor, such as a loose seal, it might be possible to fix it with the right tools and know-how. For the best outcome, it’s a good idea to get advice from a professional who can assess whether a repair or replacement would be the most effective and safe option.
Replacing gas struts that are not working properly
If your troubleshooting reveals that the gas strut is beyond repair, replacement is usually straightforward. Here’s what to keep in mind when replacing gas struts:
- Get the right size: Measure the existing struts to ensure the replacements are the correct size.
- Check the load rating: Make sure the replacement struts are rated for the weight of the object they’re supporting.
- Match the mounting points: Ensure the new struts have the same type of connectors as the old ones to fit seamlessly into place.
- Choose weather-resistant struts: If the struts will be exposed to harsh conditions, such as extreme temperatures or moisture, consider opting for models designed for durability in such environments.
You can also use one of our online tools to find the perfect gas spring. You can use our replacement tool by entering (part of) the article number found on the old strut. Click the suggested product, verify the match, and complete your order in a few simple steps!
Order your gas struts online
All our gas struts are shipped from the UK within 1-2 business days. Utilise our tools to calculate your application, find replacements, and customise gas struts to your requirements. Navigate to products in the header on our website to filter down by materials and size. For any unanswered questions, feel free to contact our support team at [email protected] or call +44(0)24 7645 5580 anytime.
