This comprehensive workshop service repair manual covers the Hitachi EX12, EX15, EX18, EX22, EX25, EX30, EX35, EX40, EX45-2 excavator models. Designed for professional use, these excavators are engineered for robust performance and reliability in demanding construction and industrial environments. Their versatile capabilities and durable construction make them a preferred choice for a wide range of heavy-duty applications. This manual provides complete technical information essential for the maintenance and repair of your Hitachi excavator. It includes detailed procedures, diagnostic information, troubleshooting guides, and technical specifications. By following the instructions within this manual, owners, mechanics, and technicians can ensure optimal performance, longevity, and safety of the equipment.