This manual pertains to the Hino RB145 W04D W04C Engine, designed for robust performance and reliability. Engineered with precision, this engine represents a commitment to quality and durability, making it suitable for a variety of demanding applications. Its advanced design incorporates features intended to maximize efficiency and longevity, ensuring optimal operation throughout its service life. The purpose of this comprehensive service manual is to provide detailed guidance for the maintenance, diagnosis, and repair of the Hino RB145 W04D W04C Engine. It covers essential procedures, from routine servicing to complex overhauls, and includes technical specifications, troubleshooting steps, and safety precautions. This resource is invaluable for technicians and owners alike, enabling them to maintain the engine's peak performance and ensure its continued reliability through informed care and expert repair practices.