The Komatsu PC300LC-8 Hydraulic Excavator, designed for robust performance and reliability, represents a significant advancement in heavy machinery. Built with precision engineering, this model, covering serial numbers A90001 and up, is equipped with a powerful Komatsu SAA6D114E-3 engine, delivering 247 net horsepower and meeting Tier 3 / EU Stage IIIA emissions standards. Its substantial operating weight of 31,390 kg and optimized ground pressure of 0.059 MPa ensure stability and efficiency across various demanding job sites. The PC300LC-8 is engineered for durability and productivity, making it a trusted choice for construction and excavation professionals seeking dependable equipment. This Workshop Service Repair Manual provides comprehensive guidance for the Komatsu PC300LC-8 Hydraulic Excavator. It details essential maintenance procedures, including fluid capacities and recommended service intervals for critical components like the engine oil and hydraulic filters. The manual also covers technical specifications, troubleshooting steps, and safety guidelines to assist owners, mechanics, and technicians in maintaining optimal performance and longevity. With its factory-official content, this manual serves as an indispensable resource for ensuring the proper upkeep and repair of your equipment.