This manual covers Case 920 Diesel, 930, 940, and W930 Diesel wheel tractors manufactured from the mid-to-late 1960s through the early 1970s. These robust machines were a significant advancement in Case's agricultural and construction equipment offerings, known for their increased power, reliability, and versatility. They featured Case-built diesel engines, typically inline-4 or inline-6 configurations, providing strong low-end torque suitable for heavy draft work. The models offered various transmission options, including manual and power-shift configurations, and were built with a focus on durability and long service life, making them competitive within their market segment against other major manufacturers of the era.

This comprehensive parts manual is designed to assist owners, mechanics, and technicians in identifying and ordering correct original equipment manufacturer (OEM) replacement parts for the specified Case tractor models. It provides detailed line drawings and exploded views for visual identification of components within major assemblies, along with part numbers, descriptions, and quantities required. The manual covers essential systems including the engine, transmission, drivetrain, hydraulics, electrical system, chassis, and power take-off. While it focuses on parts identification and ordering, it serves as a crucial resource for maintaining and repairing these vintage yet capable tractors, ensuring their continued operation for demanding agricultural and industrial applications.