This workshop service manual provides comprehensive information for the Terex TC 37 / TC 48 Excavator. Designed for robust performance in demanding environments, these excavators are built with engineering quality and reliability in mind. While specific production years are not detailed, the manual covers essential aspects of the diesel engine, including its fuel, ignition, and lubrication systems, as well as transmission disassembly and repair. The purpose of this manual is to serve as a definitive guide for technicians and operators. It details routine maintenance, tune-ups, diagnostic procedures, and repair processes, with safety precautions emphasized throughout. Special tools required for servicing are illustrated and referenced. This English-language resource is intended to ensure the optimal performance and longevity of your Terex excavator.