If the air loss rate is too much, what may indicate a problem?

If the air loss rate exceeds the specified thresholds, it suggests that there may be a significant issue with the vehicle's air brake system. A drop of more than 3 psi for single vehicles or more than 4 psi for combination vehicles indicates that there may be a leak or other malfunction in the air brake system.

The air brake system relies on maintaining adequate air pressure to function effectively. If the pressure drops too quickly, it poses a risk to safety while driving, as brakes may become less effective or fail entirely. By having specific thresholds for acceptable air loss rates, drivers and inspectors can quickly identify vehicles that may be unsafe to operate. This standard helps ensure that any potential problems can be addressed before they compromise the vehicle’s operation.

Understanding the acceptable air loss rates is crucial for the maintenance of air brake systems to prevent accidents stemming from brake failure due to insufficient air supply.