John Deere 8440 VS Hart-Parr 28-50 specs comparison
John Deere 8440
General Infos| Make | John Deere |
| Model | 8440 |
| Country | United states |
| Production | From 1979 Until 1982 |
| Price | - |
| Tractor type | Four wheel Drive (4WD) tractor |
| Fuel | diesel |
| Service repair manual | John Deere 8440 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 | 26,590 lbs or 12061 kg |
| Length | 223.5 inches [567 cm] |
| Width | - |
| Height | 126.6 inches [321 cm] |
| Wheelbase | 125 inches [317 cm] |
| Ground clearance | 19.4 inches [49 cm] |
| Turning radius | - |
| Rear tread size | 63 to 130 inches |
| Front tread size | 63 to 130 inches |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 466 ci or 7.6 L |
| Cylinders | 6 cylinders |
| Engine power | 215 hp or 160.3 kW |
| Engine RPM | 2100 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 156 gal or 590.5 L |
| Oil capacity | 22 qts or 20.8 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | John Deere 8440 Parts |
| Batteries number | 2 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | 850 |
| Ground force | negative |
| Charging system | alternator |
| Charging Volts | - |
| Charging Amps | 90 amps |
| Trans system | John Deere Quad-Range |
| Trans type | partial power shift |
| Trans gears | 16 forward and 6 reverse |
| Clutch system | hydraulic wet disc |
| Wheel drive | 4x4 articulated 4WD |
| Final drive | - |
| Steering | articulated power |
| Braking system | hydraulic wet disc |
| Cabin type | Cab standard |
| Differentiel lock | hydraulic front and rear |
| System | closed center |
| Valves | 2 |
| Pump flow | 33 gpm or 124.9 lpm |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 40 gal or 151.4 L |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | 160.58 hp or 119.7 kW |
| Fuel consumption | 11.2 gal/hour or 42.4 l/hour |
| Pulling power | 25,383 lbs or 11513 kg |
| Claimed power | 175 hp or 130.5 kW |
| Real power | 179.83 hp or 134.1 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 | 11.3 gal/hour or 42.8 l/hour |
| Hitch system | - |
| Rear hitch | III |
| Rear hitch lift | 8545 lbs or 3876 kg |
| Front hitch | - |
| Front hitch lift | - |
Hart-Parr 28-50
General Infos| Make | Hart-Parr |
| Model | 28-50 |
| Country | United states |
| Production | From 1927 Until 1930 |
| Price | 2085 USD |
| Tractor type | - |
| Fuel | gasoline |
| Service repair manual | Hart-Parr 28-50 Manual |
Dimensions, sizes and tires
| AG front tires | 28x7 steel |
| AG rear tires | 51x14 steel |
| Lawn front tires | - |
| Lawn rear tires | - |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 8600 lbs or 3900 kg |
| Length | - |
| Width | - |
| Height | - |
| Wheelbase | - |
| Ground clearance | - |
| Turning radius | - |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 675.1 ci or 11.1 L |
| Cylinders | 4 cylinders |
| Engine power | - |
| Engine RPM | 850 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | gasoline |
| Fuel injection | - |
| Fuel tank size | - |
| Oil capacity | - |
| Oil change | - |
| Starter motor | - |
| Starter volts | - |
| Parts And Accessories | Hart-Parr 28-50 Parts |
| Batteries number | - |
| Batteries voltage | - |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | - |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | - |
| Trans system | gear |
| Trans type | - |
| Trans gears | 2 forward and 1 reverse |
| Clutch system | - |
| Wheel drive | - |
| Final drive | - |
| Steering | - |
| Braking system | - |
| Cabin type | - |
| Differentiel lock | - |
| System | - |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | - |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | 28 hp or 20.9 kW |
| Drawbar horsepower | 46 hp or 34.3 kW |
| Fuel consumption | - |
| Pulling power | - |
| Claimed power | - |
| Real power | - |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | - |
| Rear PTO RPM | - |
| Front PTO | - |
| Front PTO RPM | - |
| Mid PTO | - |
| Mid PTO RPM | - |
| Fuel consumption | - |
| Hitch system | - |
| Rear hitch | - |
| 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 8440 service repair manual
- Find All mechanical and electrical parts and accessories of John Deere 8440 farm-tractor here
- Get your Hart-Parr 28-50 manual book version
- Cabine, electrical And mechanical parts for Hart-Parr 28-50 farm-tractor here
