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Unlike other haul trucks it had dual tires on the front (steering) axle and carried the load with the same weight on both axles. Early models had a Detroit Diesel 16V71 engine; later Cummins engines were used. In 1964, the Payhauler 180 entered service. The 45-ton (43t) truck became the first large, all-wheel-drive end-dump truck in the market.
The WABCO 3200 was a rare example of a tri-axle haul truck configuration A medium sized haul truck, the 214-short-ton (194 t; 191-long-ton) Caterpillar 789 [1]. Most haul trucks have a two-axle design, but two well-known models from the 1970s, the 350T Terex Titan and 235T WABCO 3200/B, had three axles.
In production since 1998, the 797 series represents Caterpillar’s largest, highest capacity haul trucks. [2] The current, third-generation model, the 797F, offers one of the largest haul truck payload capacities in the world, up to 400 short tons (363 t) and has the highest payload capacity among mechanical drive haul trucks. [3]
By 1960, the M-64 prototype truck was completed using General Electric drive systems and featuring special Goodyear low-pressure tires for the suspension. This truck was not a success; however, Unit Rig went on to be a very successful maker of off-highway dump trucks sold under the brand name of Lectra Haul (due to their electric drive system).
In some cases, a heavy hauler is designed and constructed to move a particular load on a one-off or short-term basis. An example is the self-propelled antenna transporter for the ALMA radio telescope project, a 130-tonne (130-long-ton; 140-short-ton) 28-wheeled rigid vehicle designed to carry and place 115-tonne (113-long-ton; 127-short-ton) radio telescope antennas up a mountain to an ...
In 1950 the next generation of tactical trucks were being developed. Sizes were rationalized, with 1 ⁄ 4 and 3 ⁄ 4-ton 4x4s and 2 + 1 ⁄ 2, 5, and 10-ton 6x6s. Trucks were military standard designs, 6x6 trucks used common cabs and similar fender and hood styles. [14]
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