The Case IH 5140 tractor, produced during the 1990s, represents a robust and versatile machine designed for farm owners and agricultural contractors. As part of the well-regarded 5100 series, it embodies the reliability and power that characterized Case IH's agricultural offerings. This tractor, likely powered by a turbocharged diesel engine, provides substantial horsepower for demanding tasks. Its engineering focuses on mechanical efficiency and durability, making it a dependable workhorse for various agricultural applications. This Workshop Service Manual (WSM) in English provides comprehensive guidance for the maintenance and repair of the Case IH 5140 tractor. It covers all essential systems, including engine overhaul, fuel, cooling, lubrication, transmission, hydraulics, PTO, electrical, braking, steering, axles, chassis, and the operator station. Detailed procedures for routine maintenance, troubleshooting, repairs, adjustments, and component identification are included, supported by diagrams and schematics. This manual is an indispensable resource for owners and technicians aiming to maintain the optimal performance and longevity of their equipment, enabling cost-effective self-service.