Manitoba Airbrake Practice Exam

What can happen if brake slack is not properly adjusted?

1. Improved fuel economy

2. Reduced stopping power and premature wear of brakes

3. Better tire grip

4. No noticeable difference

The correct answer is: Reduced stopping power and premature wear of brakes

When brake slack is not properly adjusted, it leads to reduced stopping power and can cause premature wear of the brakes. Proper adjustment of brake slack is crucial for ensuring that the brake system engages effectively. If there is too much slack, the brakes may not apply fully when needed, resulting in longer stopping distances, which compromises safety. Additionally, when brakes are not engaged properly, it can lead to uneven wear on the brake components as some parts may be overworked while others do not engage adequately. This premature wear means that parts will need replacement sooner than they would under proper adjustment, leading to increased maintenance costs and reduced vehicle reliability. By ensuring that brake slack is adjusted correctly, the braking system can provide optimal performance, enhancing safety and prolonging the life of the brake components.