This service repair manual covers Komatsu 82E-6 / 98E-6 Diesel Engines, specifically models 3D82AE-6, 3D88E-6, and 4D88E-6. These engines are designed for demanding applications and are engineered for reliability and performance. This manual provides comprehensive information to ensure the proper functioning and longevity of your Komatsu diesel engine. The purpose of this manual is to provide detailed instructions and specifications for the service and repair of the aforementioned Komatsu diesel engines. It includes essential information on general procedures, engine mechanical components, fuel, exhaust, cooling, lubrication, electrical, intake, and preheating systems. This resource is intended for mechanics and technicians to facilitate accurate maintenance and repair, ensuring optimal operational efficiency.