John Deere 4850 VS David Brown 990 Implematic specs comparison
John Deere 4850
General Infos| Make | John Deere |
| Model | 4850 |
| Country | United states |
| Production | From 1983 Until 1988 |
| Price | 71,000 USD |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | John Deere 4850 Manual |
Dimensions, sizes and tires
| AG front tires | 11.00-16 |
| AG rear tires | 20.8-38 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 17,457 lbs or 7918 kg |
| Length | 179.7 inches [456 cm] (2WD) |
| Width | 118 inches [299 cm] (standard axle) |
| Height | 117.8 inches [299 cm] |
| Wheelbase | 118.5 inches [300 cm] (2WD) |
| Ground clearance | 14.92 inches [37 cm] |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 466 ci or 7.6 L |
| Cylinders | 6 cylinders |
| Engine power | - |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 102 gal or 386.1 L |
| Oil capacity | 21 qts or 19.9 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | John Deere 4850 Parts |
| Batteries number | 2 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | alternator |
| Charging Volts | - |
| Charging Amps | 90 amps |
| Trans system | John Deere Power Shift |
| Trans type | full power shift |
| Trans gears | 15 forward and 4 reverse |
| Clutch system | Perma-Clutch wet disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | hydrostatic power |
| Braking system | hydraulic wet disc |
| Cabin type | Sound-Gard cab standard |
| Differentiel lock | - |
| System | closed center |
| Valves | 2 or 3 |
| Pump flow | 29.5 gpm or 111.7 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 18.6 gal or 70.4 L |
| Hydraulic pressure | 2277 psi or 157.0 bar |
| Max flow | - |
| Drawbar type | - |
| Claimed power | 162 hp or 120.8 kW |
| Drawbar horsepower | 164.73 hp or 122.8 kW |
| Fuel consumption | 11.0 gal/hour or 41.6 l/hour |
| Pulling power | 18,789 lbs or 8522 kg |
| Claimed power | 190 hp or 141.7 kW |
| Real power | 192.99 hp or 143.9 kW |
| Engine @RPM | 1000@2200 (rpm) |
| PTO Clutch | - |
| Rear PTO | independent |
| Rear PTO RPM | 1000 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 11.0 gal/hour or 41.6 l/hour |
| Hitch system | - |
| Rear hitch | 3/3N |
| Rear hitch lift | 9,599 lbs or 4354 kg |
| Front hitch | - |
| Front hitch lift | - |
David Brown 990 Implematic
General Infos| Make | David Brown |
| Model | 990 Implematic |
| Country | United states |
| Production | From 1961 Until 1980 |
| Price | - |
| Tractor type | Utility tractor |
| Fuel | diesel |
| Service repair manual | David Brown 990 Implematic Manual |
Dimensions, sizes and tires
| AG front tires | 6.00-16 |
| AG rear tires | 11-32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 4272 lbs or 1937 kg |
| Length | 118 inches [299 cm] |
| Width | 67 inches [170 cm] |
| Height | - |
| Wheelbase | 76.75 inches [194 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | 52/56/60/64/68/72/76 inches |
| Front tread size | 52/56/60/64/68/72/76 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 185.8 ci or 3.0 L |
| Cylinders | 4 cylinders |
| Engine power | 52 hp or 38.8 kW |
| Engine RPM | 2200 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 13.74 gal or 52.0 L |
| Oil capacity | 7.8 qts or 7.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | David Brown 990 Implematic Parts |
| Batteries number | 2 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | - |
| Charging system | generator |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | - |
| Trans type | partially synchronized |
| Trans gears | 12 forward and 4 reverse |
| Clutch system | 279mm dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | manual |
| Braking system | differential mechanical expanding shoe |
| Cabin type | Open operator station |
| Differentiel lock | mechanical rear |
| System | open center |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | 2000 psi or 137.9 bar |
| Max flow | 7.4 gpm or 28.0 lpm |
| Drawbar type | - |
| Claimed power | 43 hp or 32.1 kW |
| Drawbar horsepower | 43.47 hp or 32.4 kW |
| Fuel consumption | 3.4 gal/hour or 12.9 l/hour |
| Pulling power | 6,039 lbs or 2739 kg |
| Claimed power | 48 hp or 35.8 kW |
| Real power | 48.49 hp or 36.2 kW |
| Engine @RPM | 540@1800 (rpm) |
| PTO Clutch | dry disc |
| Rear PTO | transmission |
| Rear PTO RPM | 540 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 3.0 gal/hour or 11.4 l/hour |
| Hitch system | - |
| Rear hitch | II/I |
| Rear hitch lift | - |
| Front hitch | - |
| Front hitch lift | - |
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Useful links and guides ....
- John Deere provided us with the latest version of its 4850 service repair manual
- Find All mechanical and electrical parts and accessories of John Deere 4850 farm-tractor here
- Get your David Brown 990 Implematic manual book version
- Cabine, electrical And mechanical parts for David Brown 990 Implematic farm-tractor here
