This workshop service repair manual covers the Komatsu 108 Series Diesel Engine, a robust and reliable diesel engine designed for various industrial applications. Engineered for durability and performance, the 108 Series is built to meet demanding operational conditions, ensuring efficient power delivery and longevity. This manual provides comprehensive information for owners and technicians alike, focusing on maintaining the engine's optimal functionality and extending its service life through detailed procedures and specifications. The purpose of this manual is to serve as a complete guide for the repair, maintenance, rebuilding, refurbishing, and restoration of the Komatsu 108 Series Diesel Engine. It includes all necessary diagnostic and repair procedures, presented with high-quality photos, illustrations, and diagrams, mirroring the information available to professional technicians. This resource is designed to be user-friendly, enabling anyone to effectively manage and maintain their diesel engine, ensuring it operates at peak performance and reliability.