This manual covers the NEW HOLLAND CNH U.K. ENGINES, specifically models 667TAEEG, 667TAEEC, 667TAEBF, 667TAEED, and 667TAEBD. These engines are engineered for robust performance and reliability, designed to meet the demanding requirements of various applications. The focus on quality construction and advanced engineering ensures consistent operation and longevity, making them a trusted choice for professional use. The purpose of this comprehensive service manual is to provide detailed information for the maintenance, repair, and troubleshooting of your NEW HOLLAND CNH U.K. ENGINES. It includes clear text, high-quality diagrams, and step-by-step instructions, suitable for both experienced technicians and individuals with basic mechanical knowledge. This resource contains all necessary technical specifications and procedures to ensure your engine is maintained in optimal condition, minimizing downtime and maximizing efficiency.