The Case IH 7120 Tractor, produced from the mid-1980s to the early 1990s, represents a robust and reliable piece of agricultural machinery. As a descendant of the pioneering J.I. Case Company, Case IH has a rich heritage in developing powerful tractors designed for demanding farm operations. The 7120, typically powered by a 5.9-liter diesel engine producing between 100-150 horsepower, features a sophisticated Powershift transmission for seamless gear changes, enhancing operational efficiency. Its engineering prioritizes durability and performance, making it a dependable workhorse for various agricultural tasks. Safety is a key consideration, with the tractor designed to meet ROPS standards and equipped with hydraulic disc brakes for effective stopping power. This service and repair manual provides comprehensive guidance for the Case IH 7120 Tractor. It covers all essential aspects of maintenance, troubleshooting, and repair, empowering owners and technicians with the knowledge needed to keep the machine in optimal condition. Detailed information is provided on engine management, drivetrain systems, chassis components, and the electrical system, including wiring diagrams. The manual offers systematic diagnostic procedures for identifying and resolving issues, alongside step-by-step instructions for disassembly, reassembly, and component replacement. Regular maintenance schedules, fluid specifications, and insights into common wear items are also included, ensuring the longevity and efficient operation of the tractor.