CATERPILLAR 12E MOTOR GRADERS

Technical Description

The 1974 Caterpillar 12E Motor Grader is a robust, heavy-duty machine designed for efficient road construction and maintenance. With an operating length of 29 ft 3 in to 29 ft 5 in, width of 8 ft 4 in to 8 ft 6 in, and height up to 10 ft 5 in, it offers substantial working dimensions and a variable operating weight from 34,830 to 42,500 lbs depending on configuration. The grader is powered by a 6-cylinder Volvo D7EGCE3 turbocharged, aftercooled diesel engine, delivering 204 hp at 1800 rpm and 648 to 684 lb-ft of torque at 1550 rpm, with a displacement of 436 cu in (7.2 L). Fuel capacity is 92 gallons, oil system holds 5.7 gallons, and the cooling system 8.2 gallons. Hydraulic system flow is 55 gallons/min at 3000 psi relief pressure. The 12 ft wide, 25 in high, 0.9 in thick blade provides a maximum cutting depth of 31 in, with 26.5 in side shift capability and up to 18,000 lbs down pressure. Blade pull reaches 28,260 lbs. Steering articulation is ±50 degrees, with a turning radius of 23.8 to 23.9 ft. The front axle features 18 degrees of wheel lean and 16 degrees of oscillation, and ground clearance is 2 ft. The Volvo Powershift HTE 840 transmission enables top travel speeds of 28.4 mph (high gear) and 20 mph (low gear). Standard tire size is 14:00 x 24, G-2, and the electrical system is 24 V, 80 amps.