This Factory Shop Manual provides comprehensive information for Komatsu engines, specifically covering the 6D170-1 series, including models 6D170-1, SA6D170-1, SA6D170-A-1, SA6D170-B-1, SA6D170-AE-1, and SAA6D170-1. These diesel engines are characterized by their inline 6-cylinder configuration, a bore and stroke of 170 mm, and a displacement of 15.2 L. Designed for demanding applications, they feature turbocharged and intercooled induction, direct injection fuel systems, and are water-cooled. The engineering quality and reliability of these engines are supported by their robust construction and advanced technological integration, making them suitable for heavy-duty industrial use. This manual serves as an essential resource for maintaining and repairing the specified Komatsu engines. It details critical specifications, tolerances, component functions, and provides step-by-step repair and overhaul instructions. The content is presented with easy-to-read text, top-quality diagrams, pictures, and illustrations to ensure clarity and accuracy. Owners, mechanics, and technicians will find this English-language manual invaluable for understanding engine operation, performing routine maintenance, troubleshooting issues, and executing complex repair procedures to ensure optimal performance and longevity.