This manual covers the DAEWOO DOOSAN DB58T and D58TI diesel engines, designed for robust performance and reliability. These engines are engineered for demanding applications, reflecting DAEWOO DOOSAN's commitment to quality and durability. Their advanced design ensures efficient operation and longevity, making them a preferred choice for various industrial and heavy-duty uses. This comprehensive operation and maintenance manual provides essential information for the proper care and servicing of your DAEWOO DOOSAN diesel engine. It details engine specifications, maintenance schedules, disassembly and reassembly procedures, and troubleshooting guidance for key systems including lubrication, cooling, fuel, and electrical components. The manual also includes information on turbochargers and common causes of trouble, equipping owners and technicians with the knowledge to maintain optimal engine performance and extend its service life.