This workshop repair service manual covers the JCB JS Series tracked excavators, including models JS115, JS130, JS130LC, JS145, JS160, and JS180. These diesel-powered excavators are engineered for robust performance and reliability in demanding construction environments. Featuring advanced hydrostatic transmissions with 2-speed travel and efficient hydraulic systems utilizing variable displacement axial piston pumps, the JS Series is designed to deliver optimal power and control for a wide range of excavation tasks. The operating weights vary by model, typically ranging from approximately 11.5 to 13 tons, reflecting their substantial build and capability. This comprehensive manual provides essential information for the maintenance, repair, and servicing of your JCB JS Series excavator. It details critical procedures for engine oil changes, fluid capacities for engine oil and hydraulic systems, and specifications for key components such as hydraulic pumps and track drive systems. With clear instructions and technical data, this guide is an indispensable resource for owners, mechanics, and technicians to ensure the longevity, efficiency, and optimal performance of their equipment. The manual is presented in English and is designed to facilitate effective troubleshooting and upkeep.