This training manual covers the ISUZU Industrial Diesel Engine, designed to meet Tier 3 emission regulations. Engineered for reliability and optimal performance, this diesel engine features a Common Rail System and Cooled Exhaust Gas Recirculation (EGR) for efficient operation. It is specifically intended for training purposes related to Hitachi ZX excavators, providing detailed insights into its robust construction and advanced systems. This comprehensive English-language training manual offers extensive guidance for understanding and maintaining the ISUZU Industrial Diesel Engine. It includes detailed specifications of engine and system components, such as the aECM, supply pump, common rail, injectors, and sensors. Furthermore, the manual provides in-depth troubleshooting procedures, diagnostic trouble code information, guidance on scan tool usage, and a complete maintenance schedule with service notices and special tool requirements, ensuring effective upkeep and repair.