This service repair manual covers the International Harvester BC144 Engine, an internal combustion engine designed for various applications. With a displacement of 144 cubic inches, this engine is engineered for robust performance and reliability. Specific procedures are detailed for components such as the cylinder head, multi-piece oil control ring, connecting rod bearings, camshaft bearings, and the lubricating oil pump for the BC-144 model. The manual also provides comprehensive instructions for gear train timing, as well as break-in procedures for both diesel and gasoline engine variants, underscoring the versatility and durability expected from International Harvester engineering. This comprehensive English-language service repair manual is designed to assist owners, mechanics, and technicians in maintaining and repairing the International Harvester BC144 Engine. It contains hundreds of pages of detailed information, including step-by-step procedures for engine component installation and removal, timing adjustments, and critical break-in protocols. The manual covers a wide range of technical specifications and maintenance guidelines, ensuring that the engine operates at peak efficiency and longevity. This resource is compatible with Windows and Mac operating systems and is available for printing.