Arizona Air Brakes CDL Practice Test

What condition affects the braking power of the spring brakes?

1. Can only be tested by highly trained brake service people.

2. Depends on the adjustment of the service brakes.

3. Increases when the service brakes are hot.

4. Is not affected by the condition of the service brakes.

The correct answer is: Depends on the adjustment of the service brakes.

The correct answer highlights the importance of the relationship between the spring brakes and the service brakes. The braking power of spring brakes is indeed influenced by how well the service brakes are adjusted. When the service brakes are not properly adjusted, it can lead to a reduction in the overall effectiveness of the braking system, which includes the spring brakes. Proper adjustment of the service brakes ensures that the entire air brake system functions as intended. If the service brakes are in poor condition or improperly adjusted, it could reduce the effectiveness of the spring brakes as they rely on a functioning overall system to operate correctly. Therefore, maintaining the correct adjustment of service brakes is crucial for ensuring that spring brakes can provide maximum braking power when necessary. This linkage emphasizes the need for regular maintenance and checks of the entire braking system to ensure all components, including both service and spring brakes, work harmoniously.