This service repair workshop manual provides comprehensive instructions for the Hitachi EX220LC-5 Excavator, equipped with ISUZU A-6BG1TQA, A-6BG1 TQA01, or HINO H07D engines. Designed for mechanics worldwide, it details engineering quality, reliability, and specific operational principles. This manual is an essential resource for understanding and maintaining the complex systems of the EX220LC-5 Excavator, ensuring optimal performance and longevity for this robust piece of equipment. The scope of this manual encompasses all major repair and maintenance topics. It includes step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications for troubleshooting and repair. Key areas covered are general information, system and component operation, performance testing, troubleshooting, hydraulic and electrical circuits, and detailed sections on the upperstructure, undercarriage, front attachment, and engine. This manual is intended to empower owners and technicians with the precise information needed for effective service and repair.