HQPA DH220-2 Main Pump Seal Kit Assembly

This main hydraulic pump seal kit is designed for the Kawasaki K3V112DT variable displacement axial piston pump equipped on Doosan Daewoo DH220-2, DH220-3, DH220-5, and DH220-7 crawler excavators. The kit contains all necessary seals, O-rings, gaskets, and wear rings required for a complete main pump overhaul to restore original hydraulic pressure integrity and flow capacity. The seal components are manufactured from high-grade nitrile (NBR) and HNBR compounds with a 90 Shore A durometer rating, ensuring compatibility with mineral-based hydraulic fluids and resistance to extrusion at maximum system pressures of 35 MPa (350 bar). The kit is rated for continuous operating temperatures ranging from -30°C to 120°C, suitable for severe construction machinery duty cycles. Direct replacement for OEM pump assemblies including part numbers 2401-9287A, 401-00356A, K3V112DT-HN0V, and 2401-9255E. Precision molded dimensions guarantee correct groove fill and lip interference for leak-free sealing of the pump rotating group, control valve, and housing interfaces.