Komatsu 330M(S/N 24416 & 24449-24451 & 24453-24473 & 24475-24489 & 24490-24540 & 24548-24550 & 24561 HAULPAK(BFP41-BL to BFP41-CL))

The Komatsu (Dresser) 330M is a mechanical-drive rigid-frame haul truck built for mine and quarry production hauling. The "M" suffix marks the mechanical driveline: a large Cummins diesel, in the KTA1150 class and turbocharged and aftercooled, drives the rear wheels through a torque-converter powershift transmission and planetary final drives, rather than the electric wheel-motor arrangement used on Haulpak's larger classes. It falls in the roughly 90-ton, approximately 330,000 lb GVW-class payload bracket that gave the model its "330" designation under Dresser's era GVW-based numbering. This serial block, S/N 24416 and 24449-24451 and 24453-24473 and 24475-24489 and 24490-24540 and 24548-24550 and 24561, corresponding to BFP41-BL through BFP41-CL, rides on 27.00-49 tires and uses wet multi-disc brakes at all four wheel ends that double as the primary retarder, with no electronic engine or transmission controls; every fuel, brake, and shift function is mechanically or hydraulically actuated. The 330M nameplate spans two engine families over its production life: Cummins-powered mechanical-drive trucks carrying BFP41 serials, including this block, and a later Komatsu SA12V140Z-1-powered generation carrying A10190-and-up serials. This truck is exclusively the Cummins mechanical-drive version, offered essentially as a single rear-dump rock-body configuration with no separate drive-option variants documented for this serial range.

Within the 330M nameplate, the major change was a driveline swap rather than a body-style generation change. Later production moved from the Cummins mechanical package to a Komatsu-built engine, a shift that followed Komatsu's 1988 joint venture with Dresser maturing into full ownership, after which Komatsu began fitting its own engines into legacy Haulpak platforms. This exact serial block sits mid-run in the Cummins-powered production sequence, between an earlier BFP41-A/BK block and a later BFP41-CM/DA block, all sharing the same dedicated shop manual and driveline architecture. In the used and parts market, that continuity is the draw: because this truck predates electronic engine and transmission management, it remains attractive to operators who want a haul truck with no ECM to fail and a driveline, torque converter, powershift transmission, wet-disc brakes, that can be rebuilt indefinitely rather than swapped as sealed electronic modules. Parts demand centers on wear items: brake discs, final-drive and transmission internals, turbocharger components, and fuel-system parts for the mechanical Cummins engine, since these trucks are now well past their original service life and are kept running through component exchange rather than whole-machine replacement.

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.