This manual covers the CASE CX330 and CX350 Crawler Excavator models. These machines are engineered for demanding construction and earthmoving applications, featuring robust diesel engines and advanced pilot-operated hydraulic controls for precise operation. Their hydrostatic transmissions provide variable speed control, enhancing efficiency and maneuverability on job sites. While specific production years are not detailed, the inherent design emphasizes reliability and performance expected from CASE equipment. This comprehensive Service Repair Manual provides essential information for maintaining and repairing your CASE crawler excavator. It details critical maintenance procedures, troubleshooting guides, and technical specifications necessary for optimal performance and longevity. The manual is intended for owners, mechanics, and technicians, offering complete official factory repair coverage to ensure your equipment operates at its peak efficiency.