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IH M-2-4 One Ton 4x4 Cargo Truck
The International Harvester M-2-4 One Ton Cargo Truck was produced for the U.S. Navy and Marine Corps starting in 1941, replacing the very similar IH M-1-4 1/2 Ton 4x4 Cargo Truck. A total of about 10,500 were built, both with and w/o PTO winches. These trucks are powered by the International GRD-233C 6 cyl, 93hp engine mated to the H-41 4-speed transmission and 2-speed transfer case.
The M-2-4 vehicle had no cab, only a folding one-piece windshield. The rear area had removable, transverse cargo seats and a kit was provided with top bows and canvas. The rear canvas also had a flap that extended to the windshield to provide a rain fly for the two forward bucket seats.
The M-2-4 One Ton 4x4 Cargo Truck is equipped with both lifting rings and tow hooks, visible in some of the photos. A tool box is mounted on the left side, behind the end of the running board. A spare tire mounts to the cargo box, vertically on the right side.
Many variations have been noted. Some early production models had closed civilian cabs and civilian instruments. The front bumper may be a simple rectangular shape or may have a rectangular notch on the lower edge, center (perhaps related to the winch?). The brush guard may have a center section plus wings to protect the fender mounted lights, with a small step between them at the top, as in the second photo below. Alternatively, the brush guard may have a smooth curve across the top, including the lights sections, as in the bottom photo below. Vintage photos show both single windshield wiper arms and dual arms. Rear wheels may be single or duals. To help distinguish from other similar trucks, there are 18 or 20 louvers on each side of the engine compartment and the radiator cap is offset to the passenger side. The spare tire on the M-2-4 One Ton Cargo Truck was mounted lower than on the M-1-4 Half Ton truck.
International also produced a stretched variant, the 1.5 ton M-3-6. That truck is quite similar to the M-2-4 but has two rear axles, making it a 6x6. Only a very small number of M-3-6 trucks were manufactured.
Use this link to download the Instruction Manual and Lubrication Chart for International Harvester M-1-4-214 and M-2-4-233 4x4 trucks. File is 21MB in PDF format. (Thanks to Bob Friendship, North Devon, UK, for this contribution.)
Find additional photos and hi-res versions of the International Harvester M-2-4 One Ton Cargo Truck at the Olive-Drab Military Mashup:
IH M-2-4 One Ton 4x4 Cargo Truck Characteristics
Military trucks produced by International Harvester in the World War II era used a three part model number: M for Military, a second number indicating how many half-tons of off-road capacity, and a third number indicating the number of driven wheels. Example: M-2-4 is a one-ton model, 4x4. In some cases, an additional letter was inserted to further specify the model.
IH M-2-4 Photo Gallerey