Komatsu 07432-71300 Transmission Pump Assembly

The 07432-71300 transmission pump assembly is a hydraulic pump unit designed for Komatsu D75S-3 (S/N 7001-UP) and D75S-5 (S/N 15001-UP) crawler loaders. It functions as the primary transmission oil pump, converting mechanical engine power into hydraulic energy to operate the loader transmission and steering systems. The assembly integrates gear or piston pump elements within a single housing, driven directly from the engine power take-off. It supplies pressurized hydraulic fluid to the transmission control valve and steering clutch circuits. The part is identified by Komatsu OEM number 07432-71300 and alternate reference FAL040. Verification of part number against machine serial number is required prior to installation.