The Caterpillar D9 dozer replaces the D9T dozer with productivity gains of up to 3 percent in cost per unit of material moved. The Tier 4-F Cat C18 engine delivers 440 net horsepower at 1,750 rpm.

The crawler dozer is a tracked earthmoving machine with a front-mounted blade. Also called a bulldozer, the largest can approach 900 horsepower and weigh nearly 240,000 pounds. Large dozers often are ...