John Deere 4850 VS David Brown 3800 Selectamatic 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 3800 Selectamatic
General Infos| Make | David Brown |
| Model | 3800 Selectamatic |
| Country | United states |
| Production | From 1968 Until 1971 |
| Price | 4,000 USD |
| Tractor type | Utility tractor |
| Fuel | gasoline |
| Service repair manual | David Brown 3800 Selectamatic Manual |
Dimensions, sizes and tires
| AG front tires | 14.9/13-24 |
| AG rear tires | 13.6/12-28 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 3885 lbs or 1762 kg |
| Length | 115.625 inches [293 cm] |
| Width | 64.5 inches [163 cm] (min) |
| Height | - |
| Wheelbase | 76 inches [193 cm] |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | 48 to 76 inches |
| Front tread size | 48 to 72 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 146.1 ci or 2.4 L |
| Cylinders | 3 cylinders |
| Engine power | - |
| Engine RPM | 2200 (rpm) |
| Torque | 115 lb-ft or 155.9 Nm | Torque RPM | 1400 (rpm) |
| Fuel type | gasoline |
| Fuel injection | - |
| Fuel tank size | 9.5 gal or 36.0 L |
| Oil capacity | 6.75 qts or 6.4 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | David Brown 3800 Selectamatic Parts |
| Batteries number | 1 |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | - |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | - |
| Trans type | gear |
| Trans gears | 12 forward and 4 reverse |
| Clutch system | dry disc |
| Wheel drive | 4x2 2WD |
| Final drive | spur gear |
| Steering | manual |
| Braking system | mechanical shoe |
| Cabin type | Open operating station |
| Differentiel lock | rear diff lock standard |
| System | Selectamatic |
| Valves | - |
| Pump flow | 7.3 gpm or 27.6 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 6 gal or 22.7 L |
| Hydraulic pressure | 2000 psi or 137.9 bar |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | 32.13 hp or 24.0 kW |
| Fuel consumption | 3.4 gal/hour or 12.9 l/hour |
| Pulling power | 4419 lbs or 2004 kg |
| Claimed power | 39 hp or 29.1 kW |
| Real power | 37.24 hp or 27.8 kW |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | live |
| Rear PTO RPM | 540 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 3.3 gal/hour or 12.5 l/hour |
| Hitch system | position and draft control |
| Rear hitch | I |
| Rear hitch lift | 1600 lbs or 725 kg |
| 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 3800 Selectamatic manual book version
- Cabine, electrical And mechanical parts for David Brown 3800 Selectamatic farm-tractor here
