Caterpillar stretched its 740 articulated dump truck to 43.5 tons, the biggest payload among 40-ton-class ADTs. The body accommodates 31.4 cubic yards. A Cat C15 ACERT engine delivers 453 net horsepower and meets Tier 3 emissions limits without exhaust gas recirculation. The Cat-designed oil-over-nitrogen front suspension oscillates plus and minus 6 degrees, allowing the operator to travel at speed over rough terrain. Cat says its latest rear suspension blocks and mounts last as much as five times longer than previous designs.