How Often Should the Air Dryer on a Truck Be Replaced?

[SanNova]

In most cases, it should be replaced once a year, typically before winter. Here are the relevant details: 1. The air dryer is used to filter water vapor from the compressed air in the pneumatic system, preventing corrosion in the air reservoir and various pumps and valves. Therefore, whether the dryer can function properly directly affects the braking performance. If substandard products are used or the dryer is not replaced for a long time, leading to loss of dehumidification function, it will severely compromise the braking safety of the entire vehicle. 2. Always monitor whether the dryer is working properly. If the bottom of the dryer is wet or leaking oil after venting, it indicates that the internal desiccant has failed and can no longer effectively absorb moisture. This causes increased humidity in the truck's pneumatic system, leading to condensation. In such cases, the dryer should be replaced immediately. When replacing, opt for high-quality dryers with fine and numerous exhaust holes and a robust structure. This ensures better reliability, avoids future economic losses, and enhances driving safety.