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John Deere 2850 Specifications
The John Deere 2850 is a two-wheel drive or four-wheel drive utility tractor. This model was manufactured by factories in Mannheim (Germany) or Rosario (Argentina) from 1986 to 1994. The components of John Deere 2850 powerline system: a 239 cubic inches (3.9 L) JD 4239-TL 4-cylinder turbocharged liquid-cooled diesel engine with a rated power of 86 hp (64.1 kW), and 2-speed powershift transmission with 16 forward and 8 reverse gears.
The maximum travel speed (forward/reverse): 17.7 mph (28.5 kph) and 7.7 mph (12.4 kph). The closed center constant pressure hydraulic system includes a piston pump with rated fluid flow of 11.6 gal/min (44 l/min). The hydraulic pressure is 190 bar (2755 psi). The 2WD models are equipped with 10.0x16 front tires and 14.9x38 rear tires. The 12.4x28 front tires and 14.9x38 rear tires are used for 4WD tractors.
| Engine Specs |
Engine Model .................... John Deere 4239TL
Engine Type .................... 4-cylinder vertical direct injection diesel
Number of Cylinders .................... 4
Displacement, cu.in (L) .................... 239.0 (3.9)
Cylinder Bore, in (mm) .................... 4.20 (106.0)
Piston Stroke, in (mm) .................... 4.32 (110.0)
Aspiration Type .................... Turbocharged
Rated Engine Power, hp (kW) .................... 86.0 (64.1)
Rated Engine Speed, rpm .................... 2300
Low Idle Speed, rpm .................... 950
High Idle Speed, rpm .................... 2750
Maximum Torque, Nm (lb-ft) .................... 315 (232)
Torque Speed, rpm .................... 1500
Compression Ratio .................... 16.8:1
Firing Order .................... 1-3-4-2
Fuel System .................... Direct injection
Lubrication System .................... Pressure
Cooling System .................... Liquid-cooled
Fuel Tank Capacity, gal (L) .................... 22.2 (84.0)
Oil Capacity, qts (L) .................... 9.0 (8.5)
Coolant Capacity, qts (L) .................... 15.9 (15.0)
Electrical System Rating, Volts .................... 12
Charging System .................... Alternator
Alternator Rating, Amps .................... 55
| Power Take-Off |
PTO Power, hp (kW) .................... 71.5 (53.1)
PTO Clutch Type .................... Hydraulic wet disc
Rear PTO Operational Type .................... Independent
Front PTO Operational Type .................... Independent
Rear PTO Speed, rpm .................... 540/1000
Front PTO Speed, rpm .................... 1000
Rear PTO/Engine Speed, rpm .................... 540/2070, 1000/2172
Front PTO/Engine Speed, rpm .................... 1000/2172
| Transmission |
Transmission Type .................... Hi-Lo
Gearbox Type .................... 16F/8R, 2-Speed powershift
Number of Forward Gears .................... 16
Number of Reverse Gears .................... 8
Clutch Type .................... Hydraulic
Clutch Disc Type .................... Cerametallic
Maximum Forward Speed, mph (kph) .................... 17.7 (28.5)
Maximum Reverse Speed, mph (kph) .................... 7.7 (12.4)
| Wheels and Tires |
Wheel Drive System .................... 2WD/4WD
Steering Configuration .................... Front steer
Steering System .................... Power steering
Service Brake .................... Hydraulic wet disc
Front Tire Size (2WD) .................... 10.00x16
Rear Tire Size (2WD) .................... 14.9x38
Front Tire Size (4WD) .................... 12.4x28
Rear Tire Size (4WD) .................... 14.9x38
Front Tread (2WD), in (mm) .................... 59.1-79.1 (1350-2000)
Front Tread (4WD), in (mm) .................... 53.5-79.1 (1500-2000)
Rear Tread, in (mm) .................... 59.1-78.7 (1500-1990)
| Hydraulic System |
Hydraulic System Type .................... Closed center constant pressure
Implement Pump Flow, gpm (Lpm) .................... 11.6 (44.0)
Hydraulic Pressure, Bar (psi) .................... 190 (2755)
Rear Hitch Category .................... 2
Front Hitch Category .................... 2
Draft Sensing or Lift Control .................... Position and draft control
Rear Lift Capacity (2WD), lbs (kg) .................... 8000 (3630)
Rear Lift Capacity (4WD), lbs (kg) .................... 8820 (4000)
Front Lift Capacity, lbs (kg) .................... 3595 (1630)
| Dimensions and Weight |
Wheelbase (2WD), in (mm) .................... 89.2 (2260)
Wheelbase (4WD), in (mm) .................... 90 (2280)
Overall Length, in (mm) .................... 167.1 (4240)
Height (Cab), in (mm) .................... 105.8 (2680)
Overall Width, in (mm) .................... 81.4 (2060)
Ground Clearance (2WD), in (mm) .................... 26.5 (670)
Ground Clearance (4WD), in (mm) .................... 20.5 (520)
Turning Radius (2WD), in (mm) .................... 150 (3800)
Turning Radius (4WD), in (mm) .................... 166 (4200)
Weight (2WD), lbs (kg) .................... 7695 (3490)
Weight (4WD), lbs (kg) .................... 8650 (3925)
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