This comprehensive service manual covers the New Holland Kobelco E265B and E305B crawler excavators, designed for robust performance in demanding work environments. These machines are powered by a reliable 6.7L 6-cylinder, 4-cycle, turbocharged, water-cooled CNH 667TA diesel engine, engineered for durability and efficiency. The New Holland Kobelco excavators are built with a focus on engineering quality, ensuring dependable operation and longevity for a wide range of construction and earthmoving applications. This workshop service and repair manual provides in-depth information essential for the maintenance, diagnosis, and repair of your New Holland Kobelco crawler excavator. It details general information, safety notices, specifications, and maintenance standards, along with specific procedures for engine disassembly and assembly, fuel and lubrication systems, and the common rail and turbocharger systems. Furthermore, the manual covers hydraulic systems, frames, track systems, climate control, electrical systems, and troubleshooting guides, including fault codes, hydraulic diagrams, and electrical diagrams, empowering owners and technicians to keep the machinery in optimal working condition.