This service repair manual provides comprehensive technical information for the CNH INDUSTRIAL NEF TIER 4B (FINAL) AND STAGE IV ENGINE. Designed for both novice enthusiasts and professional technicians, this manual details every aspect of the engine, ensuring optimal performance and longevity. Its content is derived from factory specifications, offering unparalleled accuracy for maintenance and repair tasks. The purpose of this manual is to serve as a complete guide for servicing, maintaining, and troubleshooting the CNH INDUSTRIAL NEF TIER 4B (FINAL) AND STAGE IV ENGINE. It covers all models and engine types, presenting information through clear text, detailed diagrams, and step-by-step instructions. By following the procedures outlined within, users can efficiently perform necessary repairs and upkeep, maintaining the vehicle's operational integrity.