This Workshop Repair Service Manual covers the Case IH 5120, a robust agricultural tractor known for its reliability and performance in demanding environments. Part of the esteemed Case IH 5100 series, these tractors, typically manufactured in the 1990s, are engineered for efficiency and durability. The manual encompasses all models, engines, trims, and transmission types, providing comprehensive information for owners and technicians. Case IH tractors are recognized for their strong industry standing, offering a blend of power and dependable operation essential for agricultural tasks. This manual serves as an authoritative guide for maintaining and repairing the Case IH 5120. It provides factory-level, professional technical information with detailed diagrams, drawings, and photos. Coverage includes routine maintenance, disassembly and servicing, general repair, advanced troubleshooting, diagnostic procedures, and reinstallation. Essential information such as notes, cautions, and warnings is clearly presented to ensure safe and effective operation. The manual is designed to empower owners and technicians, enabling cost-effective repairs and ensuring the longevity of the vehicle.