This manual covers the Hitachi EX200-5, EX200LC-5, EX220-5, EX220LC-5, EX230LC-5, EX270-5, and EX270LC-5 Excavator models, equipped with ISUZU A-6BG1TQA, A-6BG1 TQA01, or HINO H07D engines. These excavators are designed for demanding operational environments, offering robust performance and reliability. Their advanced engineering ensures efficiency and durability across a range of construction and heavy-duty applications, making them a trusted choice for professionals. This comprehensive service repair manual provides detailed information essential for maintaining and repairing your Hitachi excavator. It includes operational principles, troubleshooting guides, system overviews, component operation details, and performance testing procedures. Furthermore, the manual covers hydraulic and electrical circuits, connectors, and harness information, along with detailed workshop procedures for the upperstructure, undercarriage, front attachment, and engine. This resource is intended for both do-it-yourself enthusiasts and experienced mechanics, enabling effective upkeep and repair.