This manual covers the Doosan Daewoo DX340LC Hydraulic Excavator. It is designed to provide comprehensive information for this specific model, highlighting its engineering and operational capabilities. The DX340LC is built for demanding work environments, offering robust performance and reliability essential for heavy-duty applications in construction and other industries. This complete official full factory service repair manual contains hundreds of pages detailing maintenance procedures, troubleshooting guides, technical specifications, and safety guidelines. Its purpose is to assist owners, mechanics, and technicians in effectively maintaining, diagnosing, and repairing the Doosan Daewoo DX340LC Hydraulic Excavator, ensuring its optimal performance and longevity.