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| New 793F Cat Mining Truck  The new 793F Cat Mining Truck, the fifth generation of the 793, builds on the proven, 20-year performance record of its predecessors with a powerful new engine, choice of power train options, choice of body systems and a completely redesigned operator station. These refinements take the 793F—now with 2,650 horsepower (1976 kW) and a 250-ton (226.8-tonne) payload capacity—to higher standards of productivity, durability, operating ease, altitude capability, fuel efficiency and emissions control. The 793F also offers enhanced serviceability through its ground level service points and 1,000-hour hydraulic filter service intervals. Other changes promote safe operator and technician access—wider walkways, flat upper deck, rear access ladder and a three-way lock-out tag-out box mounted on the bumper. The 16-cylinder, 2,650-gross-horsepower Cat C175-16 diesel engine displaces 5.3 liters (323 in³) per cylinder—for a total displacement of 85 liters (5,187 in³). The 793F develops 235 horsepower more than its predecessor, the 793D, which used a 16-cylinder Cat 3516B engine displacing 78 liters (4,760 in³). The cross-flow engine design uses four turbochargers, an air-to-air aftercooler and an electronically controlled common-rail fuel system that senses changes in operating conditions and regulates fuel delivery for optimum fuel efficiency. Engine emissions meet EPA Tier 2 requirements. The C175-16, with a 20-percent torque rise, allows the 793F to climb steep grades at productive speeds and to effectively negotiate poor underfoot conditions. The electronically controlled cooling system incorporates a MESABI radiator featuring a flexible-core design that is extremely durable and easy to service. write your comments about the article :: © 2009 Construction News :: home page |