David Brown 990 Implematic VS John Deere 8430 specs comparison

David Brown 990 Implematic
General InfosMake | 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 8430
General InfosMake | John Deere |
Model | 8430 |
Country | United states |
Production | From 1975 Until 1978 |
Price | - |
Tractor type | Four wheel Drive (4WD) tractor |
Fuel | diesel |
Service repair manual | John Deere 8430 Manual |
Dimensions, sizes and tires
AG front tires | 18.4-34 |
AG rear tires | 18.4-34 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 22010 lbs or 9983 kg |
Length | 223.5 inches [567 cm] |
Width | 95.8 inches [243 cm] |
Height | - |
Wheelbase | 125 inches [317 cm] |
Ground clearance | 19.4 inches [49 cm] |
Turning radius | - |
Rear tread size | 60 to 134 inches |
Front tread size | 60 to 134 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 466 ci or 7.6 L |
Cylinders | 6 cylinders |
Engine power | - |
Engine RPM | 2100 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 156 gal or 590.5 L |
Oil capacity | - |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | John Deere 8430 Parts |
Batteries number | 2 |
Batteries voltage | 6 V |
Battries Amps | - |
Cold Amps | 850 |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | - |
Trans system | Quad-Range |
Trans type | partial power shift |
Trans gears | 16 forward and 4 reverse |
Clutch system | hydraulic wet disc |
Wheel drive | 4x4 articulated 4WD |
Final drive | - |
Steering | hydrostatic power |
Braking system | hydraulic wet disc |
Cabin type | Sound-Gard cab standard |
Differentiel lock | - |
System | closed center constant pressure |
Valves | - |
Pump flow | - |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | 155.56 hp or 116.0 kW |
Fuel consumption | 11.6 gal/hour or 43.9 l/hour |
Pulling power | 22,503 lbs or 10207 kg |
Claimed power | 175 hp or 130.5 kW |
Real power | 178.16 hp or 132.9 kW |
Engine @RPM | 1000@2100 (rpm) |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 11.8 gal/hour or 44.7 l/hour |
Hitch system | - |
Rear hitch | III |
Rear hitch lift | - |
Front hitch | - |
Front hitch lift | - |
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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 8430 manual book version
- Cabine, electrical And mechanical parts for John Deere 8430 farm-tractor here