Komatsu 705-56-34100 Hydraulic Gear Pump Assembly

The 705-56-34100 is an aluminum-body quadruple hydraulic gear pump designed for simultaneous loader and steering functions on Komatsu wheel loaders. The unit integrates four pumping sections (SAR 80/63/50/12 configuration) within a single housing to deliver independent flow circuits for work hydraulics and steering systems. Constructed from high-strength aluminum alloy for weight reduction and thermal dissipation, the pump features precision-machined gear sets with pressure-balanced wear plates for volumetric efficiency under high-pressure operating conditions. Porting follows Komatsu OEM flange and thread standards for direct bolt-on installation. The pump is rated for continuous operation at system pressures typical of WA420-series loaders (approximately 25-30 MPa). Net weight is 59 kg.