What is the most common cause of failure in the air brake system?

The most common cause of failure in the air brake system is brakes that are out of adjustment. Over time, the brake components, including pushrods and slack adjusters, can wear down or fail to adjust properly, leading to decreased braking efficiency. When brakes are not properly adjusted, they may not apply enough force to stop the vehicle effectively, which can pose a significant safety risk.

Proper adjustment of the air brakes is essential to ensure that the system functions correctly and maintains optimal performance. Regular inspections and maintenance are necessary to keep the brakes in good working condition. While other issues like low battery voltage, cabling problems, or broken brake lines can occur, it is the adjustment of the brakes that is the most frequent issue encountered in the field that directly affects the air brake system’s effectiveness.