What is the purpose of the air dryer on the M1120?

Answer: B — Remove dirt and moisture from pressurized air

The purpose of the air dryer on the M1120 is to remove dirt and moisture from pressurized air. In a compressed air system, moisture and contaminants can lead to corrosion, freezing, and malfunction of air-operated components. The air dryer plays a crucial role in maintaining the integrity of these systems by filtering out moisture and particles, ensuring that the air supplied to various components, such as brakes and accessories, is clean and dry. This not only improves the reliability and performance of the vehicle's air systems but also extends the life of components that depend on compressed air. Understanding the role of the air dryer is essential in maintaining the overall function and safety of the vehicle, particularly in operations that rely heavily on air brakes or pneumatic systems.