Caterpillar 789

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A Caterpillar 789 in an open pit mine.

The Caterpillar 789 dump truck is a model of large dump trucks, typically used in open pit mining, manufactured by Caterpillar Inc.[1][2] The 789 has a capacity of 177 tonnes, and its engine can produce 1770 horsepower. While some competing products use hybrid drive, the Caterpillar 789 has an entirely mechanical drive-train. The first Caterpillar 789 trucks were introduced in 1986.[3]

The vehicle's controls are designed to work much like those of an ordinary truck.[1] However, they have multiple mechanisms for the driver to slow or stop the vehicle. Next to the traditional brake pedal there is a second foot pedal to activate a secondary braking system. There is a lever to the right of the steering wheel, called the "retarding brake", used for less intense braking. Finally, the vehicle's drive-train will automatically change gears, while descending inclines, to help the driver keep its speed under control.

Because the vehicle provides the driver with a limited view, with many blind spots, they are equipped with multiple proximity sensors, and closed circuit TVs cameras.[1]

Vehicles average 0.3 miles per gallon.[1]

Vehicle have six tires, that are 12 feet (3.7 m) in diameter, and cost $50,000 to replace.[1]

Malcolm Nance, the author of Defeating ISIS: Who They Are, How They Fight, What They Believe, described ISIS suicide bombers driving Caterpillar 789 trucks loaded with explosives into fortifications.[4]


  1. ^ a b c d e Tudor Van Hampton (2015-06-04). "Caterpillar 789D Mining Truck: Test Drive". Pickup trucks magazine. Retrieved 2016-06-14.
  2. ^ "Caterpillar 789C". Caterpillar Inc. Retrieved 2009-01-16.
  3. ^ Eric C. Orlemann. "Caterpillar Chronicle : History of the Greatest Earthmovers". MotorBooks International. p. 124, 125, 126, 129, 136. ISBN 9781610605779. Retrieved 2016-06-14.
  4. ^ Malcolm Nance (2016). Defeating ISIS: Who They Are, How They Fight, What They Believe. Skyhorse Publishing. ISBN 9781510711853. Retrieved 2016-06-14.