What must you remember with an air brake system with air-drier?

In an air brake system equipped with an air-dryer, it's crucial to ensure both the water-drainage valves of the air tanks are checked regularly and the air-drier itself is serviced frequently.

Checking the water-drainage valves is important because moisture in the air system can lead to corrosion and reduced braking efficiency. Regular servicing of the air-drier ensures that it effectively removes moisture from the compressed air before it enters the brake system, maintaining optimal performance and safety.

In the context of German traffic regulations, these maintenance tasks are essential for ensuring the reliability and efficiency of the braking system, which is critical for vehicle safety on the road. Neglecting these aspects may lead to malfunctions, which can result in serious accidents. Therefore, both of the options you selected are necessary for maintaining a functional air brake system.

However, it’s also worth noting that checking the level of antifreeze in the air-drier is equally important, especially in colder climates, as it helps prevent freezing and ensures the air-drier operates effectively. Therefore, including this option would provide a more comprehensive approach to air brake system maintenance in accordance with German traffic laws.