Manitoba Airbrake Practice Exam

What might indicate that the air brake system needs maintenance?

1. Consistent sound while braking

2. Regular operation without issues

3. Decreased braking efficiency

4. Increased fuel consumption

The correct answer is: Decreased braking efficiency

Decreased braking efficiency is a strong indicator that the air brake system may require maintenance. If a driver notices that the brakes are not responding as effectively as they should, this could signify various issues within the air brake system, such as air leaks, worn components, or problems with the brake chamber. When the braking system loses some of its capability, it not only affects the safety of the vehicle but can also lead to more severe issues if not addressed promptly. Monitoring braking efficiency is crucial for ensuring the safe operation of a vehicle. In contrast, consistent sound while braking may not always be a sign of a problem; it could simply be a characteristic of the braking system or pads. Regular operation without issues does not typically signify maintenance needs, as it suggests the system is functioning well. Increased fuel consumption could be an indirect effect of braking efficiency but is not directly indicative of the air brake system's maintenance needs. Overall, focusing on braking efficiency provides a clear and direct indication of potential issues that require attention.