This document pertains to the Komatsu 170-3 Engine, an internal combustion engine designed for robust performance. While specific production years are not detailed, the 170-3 Engine represents a commitment to engineering quality and reliability, aiming to meet the demanding operational needs of its intended applications. Its design focuses on delivering consistent power and efficiency, making it a dependable component in various industrial and heavy-duty settings. This comprehensive Workshop Service Manual provides essential information for the maintenance and repair of the Komatsu 170-3 Engine. It covers critical areas including periodic maintenance charts, fluid capacities, troubleshooting procedures, overhaul instructions, and diagnostic information. The manual is intended for both professional technicians and DIY mechanics, offering step-by-step instructions and technical specifications to ensure the vehicle remains in optimal working condition.