What factors can lead to brake fade or failure?

Brake fade or failure can occur due to several factors, notably overheating and low air pressure, which are critical to the operation of air brake systems.

Overheating happens when brakes are used excessively or in challenging conditions, resulting in the brake components, particularly the brake drums or pads, reaching high temperatures that can compromise their effectiveness. When brakes reach a temperature that exceeds their design limits, the friction material can lose its grip, leading to brake fade.

Low air pressure in the braking system reduces the force applied by the brake chamber to the braking components. Air brakes rely on a specific air pressure level to function properly; if the pressure drops too low, it can lead to insufficient application of the brakes, resulting in a diminished braking force. This combination of overheating from excessive use and insufficient application pressure can significantly impair braking performance, creating a hazardous situation.

Understanding these factors is essential for drivers operating vehicles equipped with air brakes, as they must monitor brake system pressures and be mindful of heating issues to maintain safe operation on the road.