This service repair workshop manual provides comprehensive information for the International Harvester BD154 engine, covering all models. Engineered for reliability and performance, the BD154 is a versatile engine with a displacement of 154 cubic inches, designed to accommodate both diesel and gasoline applications. Its robust construction and proven design have made it a trusted component in various applications, reflecting International Harvester's commitment to quality and durability. This manual is an essential resource for maintaining and repairing your International Harvester BD154 engine. It details a wide range of procedures, including disassembly, assembly, cleaning, and reinstallation of critical components such as the cylinder head, oil pump, and bearings. With included specifications, troubleshooting guides, electrical system diagnostics, and wiring diagrams, this English-language manual offers the in-depth knowledge required by owners and technicians to ensure optimal engine performance and longevity.