This manual provides comprehensive service and repair information for the Hitachi EX220-5 Excavator, equipped with ISUZU A-6BG1TQA, A-6BG1 TQA01, or HINO H07D engines. Designed for use by mechanics worldwide, it details operational principles, troubleshooting, and repair procedures. The manual emphasizes the engineering quality and reliability of the Hitachi EX220-5 Excavator, offering specific guidance for its maintenance and upkeep. The scope of this service repair workshop manual is extensive, covering all major topics necessary for the effective maintenance and repair of your Hitachi EX220-5 Excavator. It includes detailed step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications. Key areas addressed include general information, system and component operation, performance testing, troubleshooting, hydraulic and electrical circuits, and specific components such as the upperstructure, undercarriage, front attachment, and engine. This manual serves as an essential resource for owners and technicians, enabling informed discussions and accurate execution of maintenance and repair tasks.