This manual covers the Hitachi EX230LC-5 Excavator, a robust machine designed for demanding operational environments. Engineered for reliability and performance, the EX230LC-5 features advanced systems and is powered by ISUZU A-6BG1TQA, A-6BG1 TQA01, or HINO H07D engines. Its construction emphasizes durability and efficiency, making it a valuable asset for various construction and industrial applications. The purpose of this comprehensive service manual is to provide detailed information for the maintenance, repair, and troubleshooting of the Hitachi EX230LC-5 Excavator. It includes sections on general information, system and component operation, troubleshooting, hydraulic and electrical circuits, and specific repair procedures for the upperstructure, undercarriage, front attachment, and engine. This manual is an essential resource for owners, mechanics, and technicians to ensure the optimal performance and longevity of the equipment.