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October 19th, 2007
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Company: Caterpillar Inc
The Caterpillar 990H replaces the 990G Series II and is engineered for mining, bulk materials handling and high-volume earthmoving. The machine loads 60- to 70-ton capacity trucks in the standard lift arrangement and 100-ton capacity trucks in the high lift arrangement. Rated payload in the standard lift arrangement is 16.5 tons and operating weight is 171,642 pounds. Bucket capacities range from 11.0 to 12.0 cubic yards. The 12-cylinder engine is a V configuration with displacement of 1,648 cubic inches. The 990H also features an air-to-air aftercooling (ATAAC) system to reduce the temperature of air feeding the engine intake. The cooled, compressed air reduces engine emissions and helps maintain performance at high altitudes and in high ambient temperatures.