JOHN DEERE 772A MOTOR GRADERS

Technical Description

The John Deere 772A Motor Grader is a robust, articulated-frame machine designed for precision grading and earthmoving tasks. Powered by a turbocharged, intercooled 6-cylinder 6-466A engine with 466 cu in displacement, it delivers 150 hp (112 kW) at 2300 rpm and 465 lb-ft of torque at 1300 rpm. The Power Shift transmission offers 8 forward and 4 reverse gears, enabling a top forward speed of 25.1 mph (40 kph) and 8.6 mph (13 kph) in reverse. The articulated steering system provides a 25-degree articulation angle and a 22.6 ft turning radius for excellent maneuverability. The 12 ft moldboard blade features a 24 in height, 0.9 in thickness, and 26.9 in side shift capability, with a 360-degree circle rotation, 44-degree front and 10-degree rear tip angles, and a maximum lift of 17.1 in. The machine’s hydraulic system uses a closed-center variable displacement pump with 36 gpm flow. Standard operating weight is 30,903 lbs, with a maximum of 34,492 lbs. Key dimensions include an overall length of 27.8 ft, width over tires of 8.1 ft, wheelbase of 19.6 ft, tandem axle wheelbase of 5.1 ft, and a cab height of 10.5 ft. The front axle offers 30 degrees of oscillation and 20 degrees of wheel lean. Fluid capacities include 70 gal fuel, 41 gal hydraulic, 7 gal cooling, 5 gal oil, 1.1 gal circle gearbox, and 5 gal per tandem case. The electrical system operates at 24 volts with a 42 amp alternator.