Komatsu 56D 07 21150 Receiver Drier Assembly

The 56D 07 21150 receiver drier is a critical component in the air conditioning system of Komatsu HM series articulated dump trucks. It functions as a filter and desiccant container, removing moisture and contaminants from the refrigerant circuit to protect the compressor and expansion valve. This unit is engineered for the high-vibration, heavy-duty operating environment of articulated haulers in mining and construction applications. The housing is constructed from corrosion-resistant steel with O-ring sealed connections compatible with R134a refrigerant systems. Internal desiccant capacity is sized for the large cabin HVAC systems found on 25-40 ton class dump trucks. Direct replacement for Komatsu OEM part number 56D-07-21150. Verified fitment for HM250-2, HM300-2, HM300-2R, HM350-2, HM350-2R, HM400-2, and HM400-2R models. Installation requires standard A/C service tools and refrigerant recovery equipment per SAE J2788.