The Takeuchi TB15 and TB120 are compact excavators designed for versatile operation in various construction and landscaping applications. These tracked machines feature a diesel engine and a hydrostatic transmission, offering efficient power and precise control. Notable features include pilot-operated joysticks for intuitive operation and a Roll-Over Protective Structure (ROPS) for operator safety, with an optional Falling-Object Protective Structure (FOPS). The TB15 has an operating weight of approximately 1500 kg, while the TB120 weighs around 1200 kg, making them suitable for tasks requiring maneuverability and power in confined spaces. This Parts Manual, written in English, is intended for repair shops and individuals seeking to understand the assemblies and order parts for the Takeuchi TB15 and TB120 compact excavators. It provides detailed information to assist in identifying components and understanding how various parts fit together. While specific engine details, oil capacities, and performance metrics like digging depth, reach, and bucket capacity are dependent on individual model configurations and require reference to specific engine documentation or the main operator's manual, this guide serves as a crucial resource for maintaining and servicing these reliable machines.