Gas Strut Not Working? Troubleshooting Guide

Gas struts, also known as gas springs, are reliable components used in a wide range of applications. However, like any mechanical device, they can sometimes fail. This guide provides a comprehensive troubleshooting approach to diagnose and resolve common gas strut issues.

If your gas strut isn’t working correctly, systematically follow these steps to determine the cause and identify the appropriate solution. Remember to refer to the Gas Spring Force Calculator to verify if the initial force calculation was correct.

How do I know if my gas strut is failing?

Several symptoms indicate a failing gas strut, including a strut that doesn’t fully extend, collapses under load, makes unusual noises, or shows visible damage like dents or oil leaks. Any of these signs suggests the strut needs attention or replacement.

Is it dangerous to use a failing gas strut?

Yes, it can be dangerous. A failing gas strut may suddenly collapse, causing uncontrolled closure of lids, hatches, or doors. This can lead to injuries or damage to equipment. It’s important to address any signs of a failing strut promptly.

How to Troubleshoot a Non-Functional Gas Strut: Step-by-Step

Visual Inspection: Start by carefully examining the gas strut for any visible signs of damage, such as dents, bends, or oil leaks.
Check Mounting Points: Ensure that the mounting points are secure and free from corrosion. Loose or damaged mounting points can prevent the strut from functioning correctly.
Assess Range of Motion: Verify that the strut can move freely through its full range of motion without binding or sticking.
Evaluate Force Output: Determine whether the strut provides sufficient force to support its intended load. If the strut collapses under load, it may have lost its gas charge.
Listen for Unusual Noises: Pay attention to any unusual noises, such as hissing or squeaking, that may indicate internal damage or gas leakage.

How do I check for gas leaks in a gas strut?

To check for gas leaks, visually inspect the strut’s cylinder and piston rod for signs of oil residue. You can also apply a soapy water solution to the strut’s surface and look for bubbles, which indicate a leak. If a leak is detected, the strut must be replaced.

What tools do I need to troubleshoot a gas strut?

Basic tools for troubleshooting gas struts include safety glasses, gloves, wrenches or sockets to tighten mounting hardware, a clean rag, and soapy water to check for leaks. More advanced troubleshooting may require a spring scale to measure force output.

Gas Strut Issues and Solutions

Gas Strut Doesn’t Extend Fully

Capsule: If a gas strut fails to extend completely, it may be due to insufficient gas pressure, internal damage, or binding in the mechanism. Check for obstructions and consider replacement if pressure is the problem.

Possible Causes:

Gas leakage: Over time, gas struts can lose some of their gas charge.
Internal damage: Corrosion or wear can restrict the strut’s movement.
Binding: Misalignment or obstructions can prevent full extension.

Troubleshooting Steps:

Visually inspect the strut for any signs of damage or leaks.
Check the mounting points for proper alignment and secure attachment.
Manually extend the strut to its full length and feel for any binding or resistance.

Gas Strut Collapses Under Load

Capsule: If the gas strut collapses under load, it indicates a loss of gas pressure or internal component failure. Replace the strut with one having the correct force rating for your application.

Possible Causes:

Insufficient gas pressure: The strut may not be able to support the weight.
Worn seals: Damaged seals can cause gas to leak out, reducing the strut’s force.
Incorrect force rating: The strut may not be designed for the load it’s supporting. Use the Gas Spring Force Calculator to calculate the correct force.

Troubleshooting Steps:

Verify that the strut has the appropriate force rating for the application.
Inspect the strut for any signs of leaks or damage.
Test the strut’s ability to support the load by slowly applying weight.

Gas Strut Makes Unusual Noises

Capsule: Unusual noises like hissing or squeaking often mean internal damage. Hissing = gas leak; squeaking = worn internal parts. Replace the unit.

Possible Causes:

Internal damage: Worn or broken components can create noise.
Gas leakage: A hissing sound indicates gas is escaping from the strut.
Lack of lubrication: Insufficient lubrication can cause squeaking.

Troubleshooting Steps:

Listen carefully to the type of noise the strut is making.
Inspect the strut for any visible damage or leaks.
Try lubricating the strut’s moving parts to see if it reduces the noise (temporary fix only).

Gas Strut is Stiff or Difficult to Compress

Capsule: Over-pressurised struts or those exposed to extreme temperature fluctuations become stiff. Minor stiffness can sometimes be resolved with use, but extreme stiffness needs assessment.

Possible Causes:

Over-pressurization: The strut may have too much gas pressure.
Temperature: Extreme temperatures can affect gas pressure inside the strut.
Contamination: Dirt or debris can restrict the strut.

Troubleshooting Steps:

Check the strut for proper lubrication and clean any debris.
If possible, vent a small amount of gas from the strut (only if you have the proper tools and expertise).

Common Gas Strut Problems and Fixes

Problem	Possible Cause	Solution
Strut won’t extend	Gas leak, internal damage	Replace the strut
Strut collapses under load	Insufficient gas pressure, incorrect force rating	Replace the strut with the correct force rating (use Gas Spring Force Calculator)
Strut makes hissing noise	Gas leak	Replace the strut
Strut makes squeaking noise	Lack of lubrication, internal wear	Lubricate or replace the strut
Strut is stiff	Over-pressurization, extreme temperature	Allow strut to adjust to ambient temperature or (carefully) vent gas

Gas Strut Maintenance Tips

Regular Inspection: Routinely check gas struts for any signs of damage or wear.
Proper Lubrication: Keep the strut’s moving parts lubricated to ensure smooth operation.
Avoid Overloading: Do not exceed the strut’s maximum load capacity.
Protect from Corrosion: Apply a protective coating to prevent corrosion, especially in harsh environments. For marine envrioments, always use 316 stainless steel gas struts.
Correct Installation: Proper installation prevents misalignment and premature failure.

What is the lifespan of a gas strut?

The lifespan of a gas strut varies depending on usage, environmental conditions, and quality. Generally, a well-maintained gas strut can last from 5 to 10 years or 30,000 to 50,000 cycles. Heavy use or exposure to harsh conditions can shorten this lifespan.

Can I repair a gas strut, or do I need to replace it?

While it’s technically possible to repair some gas struts, it’s generally recommended to replace them. Repairing a gas strut requires specialized equipment and expertise, and it may not be cost-effective compared to purchasing a new strut. Additionally, a repaired strut may not perform as reliably as a new one.

Where can I buy a replacement gas strut?

Replacement gas struts can be purchased from various sources, including automotive parts stores, industrial supply companies, and online retailers like Amazon. Be sure to select a strut with the correct specifications (length, force rating, end fittings) for your application. Check fitment guides where available.

For bespoke or bulk orders, contact our industrial team.

Gas Strut Not Working? Troubleshooting Guide