MC837991
Air Dryer Assembly
Mitsubishi FUSO®

The Air Dryer Assembly (part number MC837991) is a component found in heavy-duty trucks that works to remove moisture and contaminants from the compressed air system. It consists of a desiccant cartridge, purge valve, safety valve, check valve, and heater assembly. The desiccant cartridge removes moisture from the compressed air by absorbing it as it passes through the assembly. The purge valve releases any accumulated water and contaminants from the system during operation. The safety valve ensures that pressure does not exceed safe levels within the assembly. The check valve prevents backflow of contaminated air into the compressor while allowing clean air to pass through. Finally, the heater assembly warms up incoming air to prevent freezing during cold weather conditions. Overall, the Air Dryer Assembly plays a crucial role in maintaining optimal performance and prolonging the lifespan of other components in a truck's compressed air system by preventing corrosion and damage caused by moisture and contaminants.