The Dangers of Oil Contamination and Burning: Protecting your equipment from problems within wet clutches

In the demanding world of heavy-duty manufacturing and off-highway applications, the efficiency of your equipment is only as good as the maintenance supporting it. While often overlooked, the fluid that powers your wet clutches and brakes is the lifeblood of the system. 

When clutch oil becomes contaminated or burnt, it can trigger a whole host of mechanical failures, from immediate power loss to overheating. This guide explains how to identify clutch oil contamination and burning, and how you should respond. 

Signs of Wet Clutch Problems

Your equipment will often communicate that something is wrong before a dangerous failure occurs. Operators must watch out for the early warning signs that oil has started to break down, including:

• Increased slippage
• A distinct burnt odour
• A high noise from the brake/clutch, known as ‘squeal’

How Clutch Oil Contamination Destroys Friction Material

When oil is degraded or burnt, it cannot efficiently cool the friction interface, leading to a spiked temperature within the clutch or brake housing. This heat degrades the fibres within the clutch discs, creating a smooth, slick layer on the surface known as glazing. 

Once a disc is glazed, the friction material can no longer grip effectively, resulting in a permanent clutch slip. This slippage generates even more heat, creating a vicious cycle that rapidly accelerates the degradation of your components.

The Financial Impact of Wet Clutch Problems 

The cost of ignoring these warnings can be severe. While the failure starts with the friction disc, it rarely ends there. Incorrect or contaminated oil compromises the entire driveline, impacting not just friction but also bearings, gears, and seals. Replacing an entire driveline is significantly more costly than adhering to a regular maintenance schedule. 

Even the highest-quality components require the right operating environment. By maintaining clean, high-quality oil, you allow our precision-engineered discs to perform exactly as intended, ensuring longevity and peak performance for your machinery.

Quality You Can Trust

At FMC, we understand that reliable equipment is non-negotiable. Our friction discs are engineered to maximise working hours and limit unnecessary downtime. By combining premium materials with rigorous manufacturing standards, we ensure that our components are built to withstand the rigours of your specific application. 

Even the highest-quality components, though, require the right operating environment. By maintaining clean, high-quality oil, you allow our precision-engineered discs to perform exactly as intended, ensuring longevity and peak performance for your machinery.

Need expert advice on your friction applications?

Protect your equipment today. Contact our team to discuss your specific requirements and learn more about our high-performance friction solutions.

FAQs

Q: What are the primary causes of burnt clutch oil?

A: Burnt oil is typically caused by excessive heat generation due to continuous slippage, overloading the machinery, or failing to change the fluid according to the manufacturer’s recommended intervals.

Q: Can I fix a glazed clutch disc?

A: Generally, once a disc has been glazed due to extreme heat and oil degradation, the material properties are permanently altered. It is usually more cost-effective and safer to replace the component than to attempt to recondition it.

Q: How does clutch oil contamination affect safety?

A: In braking applications, contaminated oil reduces the coefficient of friction and creates unpredictable stopping power. This delay or loss of grip can lead to critical safety failures on the job site.

Q: How often should I check my wet clutch fluid?

A: You should adhere strictly to the original equipment manufacturer (OEM) maintenance schedule. However, if you notice any burnt odours or unusual noise, an immediate inspection is required to prevent further damage.