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2025
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Eliminate the risk of spontaneous combustion: Analysis of 5 common causes of brake overheating
The vehicle was running fine on the road, and the temperature wasn’t high, yet the tires caught fire on their own. This may seem incredible to most people who have never driven trucks. But for those who are on the road frequently, it's not something unusual. Today, let's talk about the issue of brake overheating.
We all know that under normal driving conditions, the temperature of tires and brake drums is generally not very high. However, after descending a long slope or pressing the brakes several times, the temperature of the tires and brake drums will immediately rise. The heat generated mainly comes from the friction between the brake pads and the brake drums.
When driving on the road, if the brake drum or tire temperature is too high, it is likely caused by abnormal friction in the braking system. This not only increases the vehicle's fuel consumption but also accelerates the wear of the brake pads, and in more severe cases, it may even lead to vehicle fires. Here, I have summarized a few causes and solutions for your reference. Cause 1: Lack of regular maintenance leading to poor brake return.
Normally, insufficient lubrication between components can cause parts to rust, affecting their smoothness and resulting in poor return performance.Solution: Strengthen the inspection of each component to prevent poor lubrication.Reason 2: The return spring of the brake caliper has insufficient strength.
Apart from lubrication and maintenance, the effectiveness of brake return is also greatly related to the return spring in the brake caliper. Reason 3: Brake air circuit leakage "automatic braking"
A brake air line leak can also cause the brakes to overheat. Some drivers like to modify their vehicles with high-performance brake kits, but these products generally lack quality assurance, so caution is needed when using them.Solution: Use qualified auto parts and perform regular inspections.Cause 4: Improper brake adjustment leading to brake overheating.
For safety reasons, we need to regularly adjust the vehicle's brakes to ensure they are in optimal condition. If the brakes are adjusted too tightly, abnormal friction can cause the brakes to overheat. Solution: After adjusting the brakes, don't rush to drive. Frequently check the temperature of the brake drum. If you find that the temperature is too high, it is usually because the brakes are adjusted too tightly; just loosen them a bit.Cause 5: Brake drum out of round.
A warped brake drum is another reason for brake overheating. Truck drivers should pay extra attention to this.Solution: Replace the brake drum with a qualified one.● Editorial Note:Brake overheating in trucks can indeed be caused by many factors, and addressing it is not very convenient—such as having many tires, high rolling resistance of the wheels, lack of better inspection methods, etc. However, small oversights can often lead to extremely serious consequences, which makes routine inspections crucial. Even though handling this issue is inconvenient, it is still necessary to persist in doing it.If anyone has personal experiences regarding brake overheating, feel free to share them in the comments.
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