This manual covers the CASE CX75SR / CX80 Crawler Excavator models, designed for demanding construction and earthmoving applications. These excavators are engineered for robust performance and reliability, featuring diesel power and hydrostatic transmissions for efficient operation. Their versatile design makes them suitable for a wide range of tasks, from site preparation to material handling. The focus on quality engineering ensures durability and productivity in challenging environments. The purpose of this comprehensive service repair manual is to provide detailed information for the maintenance and repair of the CASE CX75SR / CX80 Crawler Excavator. It includes essential procedures, technical specifications, and troubleshooting guidance for owners, mechanics, and technicians. By following the instructions within this manual, users can ensure optimal performance, longevity, and safety of their equipment. The manual covers various aspects, including routine maintenance, engine and hydraulic system details, and operational specifications.