JOHN DEERE 770GP MOTOR GRADERS

Technical Description

The 2015 John Deere 770GP Motor Grader is a heavy-duty construction machine powered by a John Deere PowerTech PSS 9.0L six-cylinder diesel engine delivering 250 net horsepower at 2,000 rpm with a torque rise of 44% and maximum torque of 656 lb-ft. The machine features a direct-drive PowerShift transmission with eight forward and six reverse gears, enabling top speeds of 29 mph forward and 22.9 mph reverse. Operating weight reaches approximately 44,613 pounds with all-wheel drive capability. The grader measures 33 feet 2 inches in overall length, 8 feet 2 inches wide over tires, and stands 10 feet 8 inches tall to the cab roof. The moldboard blade is 12 feet wide standard with a cutting edge thickness of 7/8 inch, capable of cutting up to 28.9 inches deep with a maximum lift of 18.9 inches above ground. The electro-hydraulic load-sensing system operates at 3,500 psi with flow rates of approximately 55.7 gallons per minute. The fuel tank capacity is 100 gallons with a 7.9-gallon engine oil capacity. Steering features an 18-degree front axle lean angle and 32-degree oscillation capability with a maximum steering angle of 47.5 degrees. Ground clearance at center is approximately 24 inches. The brake system utilizes multiple oil disc brakes with approximately 23,000 square centimeters of surface area. Standard tire equipment is 14.00R24 on multi-piece rims, with optional 17.5R25 sizes available.