This workshop manual covers the Komatsu 108 Series Diesel Engine, a robust direct injection diesel engine designed for demanding applications in industrial machinery, construction equipment, and agricultural machinery. Engineered for reliability and performance, this engine utilizes diesel fuel and is built to withstand rigorous operational conditions. Its design emphasizes efficiency and durability, making it a trusted power source for a variety of heavy-duty tasks. This comprehensive English-language workshop manual provides essential information for maintaining and repairing the Komatsu 108 Series Diesel Engine. It includes detailed maintenance procedures, troubleshooting guides, repair instructions, and parts information with identification diagrams. Safety precautions, assembly, and disassembly instructions are also covered. This manual is an indispensable resource for owners, mechanics, and technicians to ensure the optimal performance and longevity of their equipment.