This service repair manual covers the CASE CX160B and CX180B excavators, part of the B Series generation. These machines are engineered for robust performance and reliability in demanding construction and earthmoving applications. Featuring powerful Cummins diesel engines, specifically the QSB4.5-C160 for the CX160B and the QSB6.7-C180 for the CX180B, these excavators offer impressive power output and efficient operation. Their hydrostatic transmission with 2-speed travel motors ensures excellent maneuverability and control across various terrains. With substantial operating weights and advanced hydraulic systems, the CX160B and CX180B are designed to meet the rigorous needs of professional operators. This comprehensive manual provides essential information for the maintenance, repair, and technical understanding of your CASE excavator. It details critical procedures, including routine service intervals, fluid capacities for engine oil, hydraulic fluid, coolant, and fuel, along with specifications for engine performance, hydraulics, and physical dimensions. Troubleshooting guides and technical data are included to assist owners, mechanics, and technicians in diagnosing issues and performing accurate repairs. The manual's purpose is to ensure the longevity, optimal performance, and safe operation of your CASE CX160B or CX180B excavator.