The Hitachi ZAXIS ZX850LC-3 is a robust crawler excavator engineered for demanding construction and earthmoving applications. This model, powered by a Cummins QSX15 Tier 3 engine, delivers substantial performance with a gross power output of 371 kW. Its considerable operating weight of 82,700 kg and impressive digging capabilities, including a maximum dig depth of 7,770 mm, underscore its suitability for heavy-duty tasks. The ZAXIS ZX850LC-3 is designed for reliability and efficiency in challenging environments, reflecting Hitachi's commitment to advanced engineering and operational excellence. This Service Repair Manual provides comprehensive guidance for the Hitachi ZAXIS ZX850LC-3 crawler excavator. It covers essential maintenance procedures, detailed troubleshooting steps, and critical technical specifications necessary for optimal operation and longevity. Owners, mechanics, and technicians will find detailed information on fluid capacities, engine details, and performance parameters. The manual is presented in English and serves as an indispensable resource for ensuring the vehicle remains in peak condition through proper care and timely repairs.