DEERE 770A MOTOR GRADERS

Technical Description

The 1985 John Deere 770A Motor Grader is a robust, articulated machine designed for heavy-duty grading applications. Controlled by a center articulation joint, it offers precise maneuverability and a compact turning radius of 22 feet. Powered by a 6-cylinder John Deere 6-466A engine, the 770A delivers 150 horsepower at 2,200 rpm and 465 lb-ft of torque at 1,300 rpm, with a displacement of 466 cubic inches and turbocharged intercooled aspiration. The standard operating weight is 30,260 lbs, with a maximum weight of 33,849 lbs. The grader features an 8-speed forward and 4-speed reverse power shift transmission, achieving a top forward speed of 25.1 mph and 8.6 mph in reverse. The 12-foot moldboard provides a side shift of 26.9 inches left and right, with a maximum lift above ground of 17.1 inches and a full 360-degree circle rotation. The hydraulic system uses a closed-center variable displacement pump, delivering 36 gal/min, and supports a wide range of blade and accessory functions. The machine has a wheel lean of 20 degrees, total oscillation of 30 degrees, and a ground clearance of 1.9 feet. With a fuel capacity of 70 gallons and a hydraulic fluid capacity of 31 gallons, the 770A is built for extended operation in demanding environments.