What preventive measure can be taken to avoid excess water accumulation in the air system?

Using an air dryer with a desiccant is an effective preventive measure to avoid excess water accumulation in the air system. Air dryers are designed to remove moisture from the compressed air before it enters the braking system, which is crucial for maintaining proper brake function and preventing issues such as freezing in cold conditions or corrosion in the air system components. The desiccant material within the air dryer absorbs moisture, ensuring that the compressed air remains dry and clean, thereby extending the lifespan of the brake components and enhancing overall system reliability.

In contrast, inspecting brake pads, while important for overall brake performance, does not directly address moisture issues in the air system. Similarly, ensuring the engine is well lubricated contributes to overall engine performance but has no impact on the air system's moisture levels. Lastly, aligning the wheels is critical for ensuring proper handling and tire wear but does not influence the presence of water in the air system.