The Valtra T Series Tractor, encompassing models such as the T121, T131, T151, T161, T171, and T191, represents a robust line of heavy-duty agricultural machinery designed for demanding farming, contracting, and fieldwork. These tractors are characterized by their strong construction, reliable performance, and focus on operator comfort and modular design, making them a cornerstone in modern agriculture. Built with AGCO Power diesel engines and advanced powershift transmissions, the T Series offers significant horsepower and adaptability for a wide range of tasks, embodying Valtra's heritage of engineering excellence. This comprehensive workshop repair manual provides essential information for the maintenance and repair of your Valtra T Series Tractor. It covers all major mechanical, electrical, and hydraulic systems, including detailed procedures for engine overhaul, transmission repair, brake system diagnostics, and hydraulic system calibration. The manual also includes routine maintenance schedules, troubleshooting guides for common issues, technical specifications, and wiring diagrams. Its in-depth coverage is designed to assist owners, mechanics, and technicians in performing accurate repairs and proactive maintenance, ensuring the longevity and optimal performance of the tractor.