This comprehensive Komatsu 870B and 870C Motor Grader Factory Service Repair Manual provides detailed technical information and step-by-step instructions for servicing and repairing these heavy-duty machines. Covering models with serial numbers 202599 and up for the 870B and 202775 and up for the 870C, this manual is an essential resource for mechanics, technicians, and operators. It includes detailed diagrams, illustrations, and specifications for every component, system, and function of these machines. From engine and transmission to hydraulics, electrical systems, and more, this manual covers all aspects of maintenance, troubleshooting, and repair. With its thorough coverage and clear instructions, this manual enables users to perform repairs efficiently and effectively, minimizing downtime and maximizing machine performance.

The Komatsu 870B and 870C are robust, large-capacity articulated dump trucks designed for demanding heavy-duty applications in mining, construction, and quarrying operations. These trucks are known for their exceptional hauling capacity, maneuverability, and durability, making them ideal for transporting large volumes of materials across challenging terrain. The 870B, introduced in the late 1990s, featured a powerful Cummins QSK45 engine delivering 700 horsepower, a payload capacity of 100 tons, and an impressive operating weight of over 190 tons. The 870C, a later model, saw further refinements and enhancements, including an upgraded engine, a refined transmission system, and improved operator comfort features. Both models boast a spacious and ergonomic operator cab providing excellent all-around visibility and intuitive controls, minimizing operator fatigue during long shifts. The Komatsu 870B and 870C are engineered with a focus on reliability and long-term performance. Their robust construction, utilizing high-strength steel and advanced welding techniques, ensures exceptional durability even under extreme operating conditions. The trucks are equipped with advanced hydraulic systems, featuring variable-displacement pumps for efficient operation and reduced fuel consumption. The articulated steering system allows for exceptional maneuverability in tight spaces and on uneven terrain. These features, combined with their powerful engines and massive payload capacity, make the Komatsu 870B and 870C highly sought-after machines for large-scale earthmoving and material handling operations.