This service manual covers the Hitachi EX22-2 Excavator, designed for robust performance in demanding work environments. It details the engineering and construction that contribute to the excavator's reliability and operational efficiency. This comprehensive guide is intended for operators and maintenance personnel who rely on the EX22-2 for a variety of construction and excavation tasks, ensuring its continued optimal function. The purpose of this manual is to provide detailed information for the maintenance, repair, and technical understanding of the Hitachi EX22-2 Excavator. It includes essential procedures, diagnostic troubleshooting, and technical specifications necessary for effective upkeep. By following the guidelines within this manual, owners and technicians can ensure the vehicle remains in peak condition, maximizing its service life and operational safety.