Georgia Commercial Driver License Practice Test

What should be emptied at the end of each driving day to prevent issues with the air compressor?

1. Air tank

2. Fuel tank

3. Oil reservoir

4. Water trap

The correct answer is: Air tank

The correct answer is to empty the air tank at the end of each driving day to prevent issues with the air compressor. Over time, moisture can accumulate in the air tank due to condensation from the compressed air. If this moisture is not drained, it can lead to several problems, such as corrosion inside the tank or components of the air system, which may ultimately lead to failure of the air brakes and reduced performance of the air-operated systems. By regularly emptying the air tank, drivers help ensure efficient operation and longevity of the vehicle's air braking system. In contrast, while the fuel tank is essential for vehicle operation, it does not directly influence the performance of the air compressor or air brake system. The oil reservoir is crucial for the engine’s lubrication but is managed under different maintenance protocols. The water trap is designed to collect moisture from the compressed air before it reaches the air tanks and may require periodic drainage. However, emptying the air tank remains a necessary practice to specifically address moisture accumulation and its related issues.