This manual provides comprehensive service and repair information for the Hino W04D, W04C-ti, and W04C-T diesel engines. These engines are known for their robust engineering and reliability, making them suitable for a variety of demanding applications. This document is designed to be the definitive resource for understanding, maintaining, and repairing these specific Hino diesel engine models. The scope of this workshop manual covers all aspects of servicing, repair, and troubleshooting. It includes detailed instructions, hundreds of pages of content, and numerous high-quality photographs and diagrams to guide users through every procedure. This manual is an essential tool for professional mechanics and technicians, offering step-by-step guidance and exploded views to ensure accurate and correct completion of all maintenance and repair tasks.