David Brown 990 Implematic VS John Deere 4840 specs comparison
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 | - |
John Deere 4840
General Infos| Make | John Deere |
| Model | 4840 |
| Country | United states |
| Production | From 1978 Until 1982 |
| Price | - |
| Tractor type | Row Crop tractor |
| Fuel | diesel |
| Service repair manual | John Deere 4840 Manual |
Dimensions, sizes and tires
| AG front tires | 10.00-16 |
| AG rear tires | 24.5-32 |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 14,900 lbs or 6758 kg |
| Length | 177 inches [449 cm] |
| Width | 96 inches [243 cm] |
| Height | 117 inches [297 cm] |
| Wheelbase | 118.5 inches [300 cm] |
| Ground clearance | - |
| Turning radius | 14.7 feet [4.5 m] |
| Rear tread size | 60 to 131.5 inches |
| Front tread size | 58 to 100 inches |
| 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 | 103 gal or 389.9 L |
| Oil capacity | - |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | John Deere 4840 Parts |
| Batteries number | 2 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | alternator |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | John Deere PowerShift |
| Trans type | full power shift |
| Trans gears | 8 forward and 4 reverse |
| Clutch system | - |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | power |
| Braking system | differential hydraulic wet disc |
| Cabin type | Sound-Gard cab |
| Differentiel lock | pedal-actuated hydraulic |
| System | closed center |
| Valves | 2 or 3 |
| Pump flow | 23 gpm or 87.1 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 16.5 gal or 62.5 L |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | 157 hp or 117.1 kW |
| Drawbar horsepower | 151.21 hp or 112.8 kW |
| Fuel consumption | 11.3 gal/hour or 42.8 l/hour |
| Pulling power | 17,307 lbs or 7850 kg |
| Claimed power | 180 hp or 134.2 kW |
| Real power | 181.63 hp or 135.4 kW |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | independent |
| Rear PTO RPM | 1000 (rpm) |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | 11.5 gal/hour or 43.5 l/hour |
| Hitch system | - |
| Rear hitch | III,IIIN |
| Rear hitch lift | 8,295 lbs or 3762 kg |
| Front hitch | - |
| Front hitch lift | - |
Related tractor comparison
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David Brown 990 Implematic Renault 981
John Deere 4840 Big Bud 450/50
Choose another tractor
Useful links and guides ....
- David Brown provided us with the latest version of its 990 Implematic service repair manual
- Find All mechanical and electrical parts and accessories of David Brown 990 Implematic farm-tractor here
- Get your John Deere 4840 manual book version
- Cabine, electrical And mechanical parts for John Deere 4840 farm-tractor here
