This manual provides comprehensive technical information for the Hitachi EX220LC-5 Excavator, equipped with ISUZU A-6BG1TQA, A-6BG1 TQA01, or HINO H07D engines. Designed for demanding operational environments, the EX220LC-5 represents a commitment to engineering quality and reliability. This guide is intended to support owners and operators in understanding and maintaining their equipment, ensuring optimal performance and longevity through detailed procedures and specifications. The scope of this service manual encompasses a wide range of critical information for the Hitachi EX220LC-5 Excavator. It includes detailed sections on general information, system overviews, component operation, performance testing, and troubleshooting. Furthermore, it covers hydraulic and electrical circuit diagrams, harness information, and detailed workshop procedures for the upperstructure, undercarriage, front attachment, and engine. This manual serves as an essential resource for performing maintenance, diagnostics, and repairs, equipping users with factory-level knowledge to effectively manage their equipment.