Dimensions
Caterpillar D3B tractors are 5 feet 8 inches wide over the tracks and 8 feet 8 inches from the ground to the top of the cab. This tractor is 9 feet 1 inch long without the blade, and 12 feet 1 inch long with the blade. The ground clearance for this machine is 1 foot and the length of the tracks on the ground is 6 feet.
Engine
A Caterpillar D3B Crawler Tractor uses a Caterpillar 3204 engine with four cylinders and natural aspiration. The displacement for this motor is 317.3 cubic inches. With the motor running at 2,400 rpm, the engine creates 65 horsepower. The transmission is a planetary powershift model with three forward and three reverse gears. The maximum forward and reverse speeds for the engine are 6.6 and 7.1 mph, respectively. The fuel tank has a maximum capacity of 30.1 gallons.
Hydraulics and Capacities
Caterpillar D3B tractors have a hydraulic system that creates 2,500 psi of pressure, with a maximum flow capacity of 14.5 gallons per minute, maximum fluid capacity of 18.5 gallons and final drive fluid capacity of 2.1 gallons. The engine holds a maximum of 3.2 gallons of oil and the cooling system has a fluid capacity of 5.3 gallons. Operational weight for the D3B tractor is 15,161 lbs.
Blade and Undercarriage
The blade of a Caterpillar D3B crawler tractor is 2 feet 9 inches high and 7 feet 9 inches wide. This blade has a cutting depth of 14.6 inches and an overall capacity of 1.6 square yards. The angle of the blade is 25 degrees in both directions. Both tracks for this tractor have five rollers and 36, 12-inch shoes. The tracks make contact with an area that measures 1,721 square inches and have a gauge that measures 4 feet 7 inches.