Komatsu 330M(S/N 24120-24415; 24421-24448; 24452; 24474 HAULPAK (BFP41-A to BFP41-BK))

The 330M is a rigid-frame, rear-dump, mechanical-drive haul truck in the Dresser/Komatsu Haulpak lineage, built in the roughly 90 US ton payload class. The "M" suffix marks the mechanical drivetrain, a powershift transmission behind a torque converter, distinct from Komatsu's later electric-drive large rigid trucks. This serial block (24120-24415, 24421-24448, 24452, 24474; prefix BFP41-A to BFP41-BK) dates to the Dresser-badged Haulpak era of the early 1990s, produced during the Komatsu-Dresser joint venture years (1988-1994). Later serials within this specific block lean toward a large-displacement Cummins diesel, possibly from the KT1150/KTA1150 family, though the exact engine is not firmly confirmed across the full range and should be checked against the data plate. Komatsu offered the 330M with rock or coal/aggregate dump bodies, an optional tailgate, a body wear liner, single (non-dual) rear tires, oil-cooled multi-disc brakes that double as a retarder, and hydro-pneumatic suspension struts, with high-altitude and cold-weather packages available.

The 330M model name covers several distinct serial blocks that do not share the same engine or driveline parts. This block (BFP41-A to BFP41-BK) is separate from sibling 330M lines built on the A10190-A10223 range, which carry a confirmed Komatsu SA12V140Z-1 engine, and from later BFP41 production blocks (BFP41-BL to BFP41-CL, and BFP41-CM to BFP41-DA) that followed it down the line. Anyone buying, selling, or sourcing parts for one of these trucks needs the exact serial/PIN to identify the correct engine, transmission, and final drive components, since two trucks both stamped "330M" can differ under the skin. In the used and parts market, this generation of mechanical-drive Haulpak truck stays relevant because units of this era are still working in pits worldwide, and the driveline, torque converter, powershift transmission, and wet-disc brakes, follows service and rebuild practice common across the Haulpak mechanical-drive family even where documentation for this exact serial block is thin.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.