John Deere 8640 VS Allis Chalmers 620 specs comparison
John Deere 8640
General Infos| Make | John Deere |
| Model | 8640 |
| Country | United states |
| Production | From 1979 Until 1982 |
| Price | - |
| Tractor type | Four wheel Drive (4WD) tractor |
| Fuel | diesel |
| Service repair manual | John Deere 8640 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 | 28,270 lbs or 12823 kg |
| Length | 223.5 inches [567 cm] |
| Width | - |
| Height | 126.6 inches [321 cm] |
| Wheelbase | 125 inches [317 cm] |
| Ground clearance | 18.4 inches [46 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 | 619 ci or 10.1 L |
| Cylinders | 6 cylinders |
| Engine power | 275 hp or 205.1 kW |
| Engine RPM | 2100 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | diesel |
| Fuel injection | - |
| Fuel tank size | 214 gal or 810.0 L |
| Oil capacity | 26 qts or 24.6 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | John Deere 8640 Parts |
| Batteries number | 2 |
| Batteries voltage | 6 V |
| Battries Amps | - |
| Cold Amps | 975 |
| 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 | 41 gal or 155.2 L |
| Hydraulic pressure | - |
| Max flow | - |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | 203.34 hp or 151.6 kW |
| Fuel consumption | 14.5 gal/hour or 54.9 l/hour |
| Pulling power | 27,782 lbs or 12601 kg |
| Claimed power | 225 hp or 167.8 kW |
| Real power | 228.75 hp or 170.6 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 | 14.7 gal/hour or 55.6 l/hour |
| Hitch system | - |
| Rear hitch | III/IIIN |
| Rear hitch lift | 8545 lbs or 3876 kg |
| Front hitch | - |
| Front hitch lift | - |
Allis Chalmers 620
General Infos| Make | Allis Chalmers |
| Model | 620 |
| Country | United states |
| Production | From 1973 Until 1975 |
| Price | - |
| Tractor type | Sub Compact Utility tractor |
| Fuel | gasoline |
| Service repair manual | Allis Chalmers 620 Manual |
Dimensions, sizes and tires
| AG front tires | 4.00x12 |
| AG rear tires | 8x16 |
| Lawn front tires | 20-8x10 |
| Lawn rear tires | 20-8x10 |
| Indus front tires | - |
| Indus rear tires | - |
| Weight | 1,500 lbs or 680 kg |
| Length | 83 inches [210 cm] |
| Width | 48 inches [121 cm] |
| Height | 43.25 inches [109 cm] |
| Wheelbase | 56 inches [142 cm] |
| Ground clearance | 15 inches [38 cm] |
| Turning radius | 3 feet [0.9 m] |
| Rear tread size | - |
| Front tread size | - |
| Turning radius | - |
Horsepower and engin specs
| Engine capacity | 49.8 ci or 0.8 L |
| Cylinders | 2 cylinders |
| Engine power | 19.5 hp or 14.5 kW |
| Engine RPM | 3600 (rpm) |
| Torque | - | Torque RPM | - |
| Fuel type | gasoline |
| Fuel injection | - |
| Fuel tank size | 3.8 gal or 14.4 L |
| Oil capacity | 3.5 qts or 3.3 L |
| Oil change | - |
| Starter motor | - |
| Starter volts | 12 V |
| Parts And Accessories | Allis Chalmers 620 Parts |
| Batteries number | 1 |
| Batteries voltage | 12 V |
| Battries Amps | - |
| Cold Amps | - |
| Ground force | negative |
| Charging system | - |
| Charging Volts | - |
| Charging Amps | 20 amps |
| Trans system | - |
| Trans type | hydrostatic |
| Trans gears | infinite (3-range) forward and reverse |
| Clutch system | - |
| Wheel drive | 4x2 2WD |
| Final drive | - |
| Steering | - |
| Braking system | - |
| Cabin type | Open operator station |
| Differentiel lock | - |
| System | - |
| Valves | - |
| Pump flow | - |
| SVC flow | - |
| Steering flow | - |
| Tank capacity | 1.25 gal or 4.7 L |
| Hydraulic pressure | 500 psi or 34.5 bar |
| Max flow | 2.25 gpm or 8.5 lpm |
| Drawbar type | - |
| Claimed power | - |
| Drawbar horsepower | - |
| Fuel consumption | - |
| Pulling power | - |
| Claimed power | - |
| Real power | - |
| Engine @RPM | - |
| PTO Clutch | - |
| Rear PTO | electric |
| Rear PTO RPM | 2000 (rpm) |
| Front PTO | electric |
| Front PTO RPM | 2000 (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 8640 service repair manual
- Find All mechanical and electrical parts and accessories of John Deere 8640 farm-tractor here
- Get your Allis Chalmers 620 manual book version
- Cabine, electrical And mechanical parts for Allis Chalmers 620 farm-tractor here
