The 1981 Caterpillar 140G Motor Grader is a robust construction machine designed for precise grading and earthmoving tasks. Powered by a Caterpillar 3306 turbocharged, inline 6-cylinder, four-stroke diesel engine with approximately 638 cubic inches (10.5 liters) displacement, it delivers around 150 hp at 2000 rpm, providing reliable power and torque for demanding operations. The grader weighs approximately 27,822 lbs, with a wheelbase of 19.4 ft and an overall length of 27.3 ft, ensuring stability and maneuverability. It features a 14 ft wide moldboard with a 360° rotation capability, 8.4 ft blade base, and a cutting edge designed for efficient soil cutting with a maximum depth of approximately 17.2 inches. The blade has a side shift range of 26 inches both left and right and a maximum lift of about 18.3 inches above ground. The front axle allows an 18° wheel lean and 32° total oscillation for optimal steering and terrain adaptation. The 140G uses 14×24 10PR tires, supporting a standard width over tires of about 8 ft and a height to the cab roof of approximately 11 ft. Its hydraulic system features a 24-volt electrical system with a 40-amp alternator. Fuel capacity is roughly 75 gallons, supporting extended field use. Steering is facilitated via Variable Knee Lever (VKL) system with a turning radius of 24 ft and 50° articulation left and right. This machine combines durable engineering and practical features for effective grading in various construction and maintenance applications.