Komatsu HM300 Articulated Dump Truck Manuals

Download expert-level PDF workshop manuals for the Komatsu HM300 dump truck series. These manuals cover all major systems—engine, hydraulics, braking, transmission, and electrical—with detailed service procedures and OEM schematics. Designed for the HM300-1, HM300-2, and HM300-2R models, they’re ideal for mechanics, fleet operators, and owner-maintainers who demand precision and performance.