Nachi PVD-2B-40P PVD-2B-44P Hydraulic Pump Repair Parts Kit

This hydraulic pump repair parts kit is engineered for Nachi PVD-2B series variable displacement axial piston pumps, specifically covering the 40 cc/rev and 44 cc/rev displacement frames (PVD-2B-40P, PVD-2B-44P). The kit contains critical wear components including cylinder block rotor assemblies, piston shoes, valve plates, shaft seals, and gasket sets manufactured to original factory tolerances. The PVD-2B series utilizes an internal drain design with swash plate control, widely deployed as main hydraulic pumps on 3-5 tonne compact excavators. This restoration kit addresses common failure modes such as pressure loss, internal leakage, and contamination damage. Components are machined from high-strength alloy steel and hardened running surfaces to withstand continuous operating pressures up to 24.5 MPa (315 bar) and speeds up to 2,600 rpm. Direct OEM cross-reference compatibility includes Komatsu PC30MR-2 (708-1S-00252, 708-1S-00222), Hitachi EX30-2/EX40-2 (4331671, 4358274), Kubota KX91-2/KX91-3, and Yanmar mini excavators equipped with Nachi PVD-2B main pumps. Verification of pump nameplate model code (e.g., PVD-2B-40P-16G5-4191B) is required prior to installation.