This manual pertains to the Hino P11C-UP engine, a robust component designed for demanding applications. Engineered for reliability and performance, the P11C-UP engine represents a significant advancement in heavy-duty powertrain technology. Its construction emphasizes durability and efficiency, making it a trusted choice for professional use where consistent operation and longevity are paramount. This engine is built to withstand rigorous operational demands, reflecting Hino's commitment to quality and innovation in the commercial vehicle sector. The purpose of this comprehensive workshop manual is to provide detailed guidance for the service, repair, and troubleshooting of the Hino P11C-UP engine. It contains step-by-step instructions, intricate diagrams, and photographic illustrations to assist both professional mechanics and technicians in performing all necessary maintenance and repair tasks accurately. This manual covers a wide range of procedures, ensuring that owners and service personnel have the resources needed to maintain the engine's optimal performance and extend its operational lifespan.