Caterpillar Other models

The V20 Cat C175-20 engine, with a displacement of 6,469 cui (around 106 litres), produces 4,000 hp (nearly 2,983 kW). Gross operating weight loaded is 1,375,000 lb (around 623.7 tonnes). Length is 49 ft (around 14.9 m), wheelbase 23 ft (around 7.0 m), front canopy height empty 25 ft (around 7.6 m), and overall width over the tyres loaded 31 ft (around 9.4 m). The fuel tank holds 1,000 US gallons (around 3,785 litres). Power reaches the rear wheels through a mechanical seven-speed planetary gearset, with the engine mounted at the front.

Ultra-class haul trucks like the 797F work open-pit copper, coal and ore mines, hauling blasted or excavated material from the mine face to the processing plant or the dump. Since they operate exclusively on the mine site's own haul roads, they carry no road-traffic type approval, but are subject to strict internal safety and maintenance rules at each mine.

For a used haul truck of this class, check the operating hours on the V20 engine and drivetrain components, the condition of the tyres, which represent a significant cost at this size, the condition of the hoist cylinders and dump-body mounts, and complete service documentation to the manufacturer's schedule. Since parts and service are highly specialised, supply runs almost exclusively through Caterpillar and its authorised dealers.