This manual covers the CASE CX330, CX330NLC, and CX350 excavators, designed for demanding construction and earthmoving applications. These Tier 3 models are engineered for robust performance and reliability, featuring a diesel engine and hydrostatic transmission. Notable features include ROPS/FOPS cabs for operator safety and intuitive joystick controls for precise operation. The excavators are equipped with variable displacement piston pumps for efficient hydraulic power, and offer compatibility with mono boom and two-piece boom options to suit various job requirements. This comprehensive official full service repair manual provides essential information for the maintenance and repair of your CASE excavator. It details critical procedures, technical specifications, and safety guidelines necessary to keep your machine operating at peak performance. The manual covers engine specifications, hydraulic system details, undercarriage information, and attachment compatibility, offering clear instructions for owners, mechanics, and technicians. By following the guidance within this manual, you can ensure the longevity and efficiency of your CX330, CX330NLC, or CX350 excavator.