This manual covers the Hitachi EX220LC-5 Excavator, a robust machine designed for demanding operational environments. Engineered for reliability and performance, the EX220LC-5 is equipped with advanced systems and components, including ISUZU A-6BG1TQA, A-6BG1 TQA01, and HINO H07D engine options. Its construction emphasizes durability and efficiency, making it a suitable choice for a wide range of construction and earthmoving applications. This comprehensive guide provides detailed information to ensure the optimal functioning of your equipment. The purpose of this service manual is to provide owners, mechanics, and technicians with complete and detailed instructions for the maintenance, repair, and troubleshooting of the Hitachi EX220LC-5 Excavator. It includes in-depth coverage of operational principles, system overviews, component operation, performance testing, and troubleshooting procedures. Furthermore, it details hydraulic and electrical circuits, connectors, and harness information, alongside workshop procedures for the upperstructure, undercarriage, front attachment, and engine. This manual serves as an essential resource for performing all service and repair operations.