The KATO HD2310-3 Hydraulic Excavator represents a robust piece of construction equipment, engineered for demanding tasks. Its design prioritizes reliability and performance, making it a valuable asset for various industrial and commercial applications. This manual covers this specific model, providing in-depth information to ensure its optimal operation and longevity. This Repair Service Manual is designed to assist mechanical technicians and KATO HD2310-3 owners in building and maintaining quality service. It comprehensively covers repair, overhaul, routine maintenance, servicing, and diagnostics, with special emphasis on safety procedures and proprietary component instructions. Detailed information on engine specifications, transmission, electrical systems, and body repair, along with torque specifications and special tool references, is included to facilitate efficient and accurate work.