This workshop service repair manual covers the Hino RB145 W04D engine. Designed for comprehensive coverage, this manual provides detailed information to ensure the optimal performance and longevity of your engine. It is an essential resource for anyone seeking to understand, maintain, or repair the Hino RB145 W04D engine, offering in-depth guidance for both routine upkeep and complex repairs. The scope of this manual is extensive, encompassing engine identification, general precautions, disassembly and assembly procedures, maintenance checklists, and detailed checks and maintenance routines. It also includes specific sections on special tools, engine body, fuel system, troubleshooting, servicing specifications, tightening torques, cooling system, exhaust system, fuel filter, and the electrical system, including the alternator, regulator, and wiring diagrams. This manual is structured to assist owners, mechanics, and technicians in diagnosing issues and performing repairs efficiently and accurately.