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The Caterpillar D7 is a medium track-type tractor manufactured by Caterpillar Inc. and most commonly used as a bulldozer. The D7 was first manufactured in 1938. A series of improved models were later produced, including the D7C in 1955, the D7D in 1959, the 160 hp (120 kW) D7E in 1961, the 180 hp (130 kW) D7F in 1969 and the 200 hp (150 kW) D7G ...
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Caterpillar first introduced the RD4 in 1936, [1] as the diesel follow on to the successful CAT 30 gas model. The RD4 originally weighed in at 10,000 pounds (4,500 kg), and used Caterpillar's D4400 engine, an inline four-cylinders, with a 4.25 by 5.50 inches (108 mm × 140 mm) bore and stroke. [ 2 ]
The Caterpillar D8 is a medium track-type tractor designed and manufactured by Caterpillar. Though it comes in many configurations, it is usually sold as a bulldozer equipped with a detachable large blade and a rear ripper attachment.
B7R is powered by the Volvo D7E (previously D7A, D7B and D7C) six-cylinder diesel engine with a turbocharger and intercooler. The D7E engine produces 290 hp with 1200 Nm of torque between 1050 and 1650 r/min. It comes with a retarder incorporated into the gearbox. The retarder slows down the engine when brakes are applied.
Bill Belichick has reportedly interviewed with North Carolina for the team's head coaching position. (Photo by Andy Lewis/Icon Sportswire via Getty Images) (Icon Sportswire via Getty Images)
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