This comprehensive Komatsu PC100-6 and PC120-6 Hydraulic Excavator Factory Service Repair Manual offers a complete and detailed resource for technicians and mechanics working on these machines. It covers all critical aspects of maintenance, repair, and troubleshooting for Komatsu PC100-6 models with serial numbers 40001 and above, and PC120-6 models with serial numbers 45001 and above. The manual provides in-depth information on every system and component, including engine, hydraulics, electrical, undercarriage, and more. With its detailed diagrams, step-by-step instructions, and clear explanations, this manual empowers you with the necessary knowledge and guidance to perform a wide range of tasks, from routine maintenance and repairs to complex troubleshooting and overhaul procedures. This official factory service manual is the ultimate resource for ensuring efficient and effective operation of your Komatsu PC100-6 and PC120-6 hydraulic excavators.

The Komatsu PC100-6 and PC120-6 are renowned hydraulic excavators, part of the Komatsu PC series renowned for their durability and performance. These models were manufactured by Komatsu, a Japanese multinational corporation with a global presence in the construction equipment industry. Both the PC100-6 and PC120-6 are intermediate-sized excavators designed for a wide range of applications, including construction, demolition, mining, and material handling.

The PC100-6 and PC120-6 models are powered by Komatsu's reliable diesel engines, specifically the SAA4D107E-1 engine for the PC100-6 and the SAA4D107E-2 engine for the PC120-6. These engines are known for their efficiency and power output, delivering impressive performance for demanding tasks. The PC100-6 has an operating weight of approximately 17.5 tons while the PC120-6 weighs in at about 20.5 tons. This difference in weight is reflected in their digging capacities, with the PC120-6 boasting a larger bucket capacity and greater digging force. Both excavators feature robust hydraulic systems, engineered for precise control and powerful operation. The hydraulic systems are responsible for powering the boom, arm, bucket, and other functions.