Workshop manual for the Komatsu PC340-7 excavator, written in English. This workshop manual is for Komatsu excavator models PC340LC-7 and PC340NLC-7, serial numbers 40001 and later, equipped with the SAA6D114E engine. The manual includes detailed specifications, dimensional and operating range diagrams, component weight tables, and lubricant recommendations. It also covers the structure, function, and maintenance standards of major components, including the engine, power system, hydraulic system, chassis, and cab.