North Carolina CDL Air Brakes Practice Test

Draining the oil and water from the bottom of compressed air storage tanks at the end of each day of driving is essential for maintaining the braking system's efficiency and safety. Over time, moisture and oil can accumulate in the air tanks due to the compression process. If not removed, this buildup can lead to corrosion, freezing, or malfunction within the air brake system, which compromises braking performance. Daily maintenance ensures that the air system operates effectively, helping to prevent potential issues that could arise from contaminated air storage. Keeping the tanks clean helps maintain optimal brake function and extends the lifespan of the air brake components. Regular checks help identify any problems early and reduce the risk of system failures while on the road.