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The Cat 621G wheel tractor scraper has a 365-horsepower engine. It is equipped with a 22-cubic-yard bowl that can self load and haul 52,800 pounds of materials. The machine can also be push-loaded by a medium-sized Cat bulldozer. The 621G articulates 175 degrees (90 degrees to the right and 85 degrees to the left). The wheel tractor scraper is self-deployable with top speeds of 32 mph and a travel range exceeding 200 miles. The 621G WTS has Electronic Technician, a service tool that identifies potential problems by displaying real-time pressures, temperatures, fuel settings, historical data and other diagnostic information.