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The Cat D7R Series 2 WH waste handler, track-type tractor machines are purpose-built for landfill operations with special guarding and cooling systems. The D7R has a 258-horsepower, Cat 3176C engine and a 55,788-pound operating weight. With the elevated sprocket design, the final drives are located above the work area. The cab is isolation-mounted and has a low rear window, storage area behind the seat, standard 24 to 12 volt converter, sliding windows, differential steering and analog gauges on the dash. Caterpillar offers technology options such as Product Link and the AccuGrade laser grade control system.