This manual pertains to the Hino RB145 W04D W04T Engine. It is designed to provide comprehensive guidance for the repair and overhaul of this specific engine model. The content assumes a foundational understanding of general automotive practices and emphasizes the unique aspects of the Hino RB145 W04D W04T Engine to ensure quality service and maintenance. The purpose of this manual is to equip owners, mechanics, and technicians with the necessary information to maintain and repair the Hino RB145 W04D W04T Engine effectively. It covers a wide range of topics including routine maintenance, diagnostic and repair procedures, tune-ups, and detailed instructions for assemblies, disassemblies, and system-specific repairs such as fuel, ignition, lubrication, exhaust, and electrical systems. Special attention is given to safety precautions and the use of specific tools, denoted by WARNING, CAUTION, and NOTE symbols, to facilitate informed and professional servicing.