What is considered excessive air loss during a leakage test?

During a leakage test, excessive air loss is defined as any loss greater than 3 psi for vehicles over 1,000 pounds. This standard is in place because excessive air loss can indicate leaks in the air brake system, which can compromise the vehicle's ability to stop effectively and safely. Consistent leaks can lead to increased wear on system components and ultimately result in a failure of the air brake system, increasing the risk of accidents.

Monitoring air loss is critical for maintaining the effectiveness of brakes, as air pressure is essential for the operation of air brake systems. By adhering to this guideline, drivers can ensure that their brake systems are functioning properly and can take appropriate actions if they find excessive leakage. Regular checking for leaks and the overall maintenance of air brake systems is essential for driver safety and effective vehicle operation.