The John Deere 850 crawler dozer uses a six-cylinder John Deere 500 series engine. At 1,800 rotations per minute, this turbocharged engine offers 145 net horsepower. Oil pressure is maintained at between 40 and 50 pounds per square inch, according to the manufacturer.
The 37,120-pound 850 crawler dozer by John Deere was constructed to a height of 10 feet 6 inches. This crawler dozer is 16 feet 1.5 inches long and 12 feet 8 inches wide, according to the manufacturer.
The engine cooling system on this crawler dozer offers a 9-gallon capacity. The fuel tank on this machine is capable of holding 82 gallons of fuel. The hydraulic system employed by this crawler dozer can hold 35 gallons of hydraulic fluid.