| Tractor Type | Farm Tractor |
|---|---|
| Manufacturer | John Deere |
| Model | 8640 |
| Horsepower TOP | 275.1 HP (205.1 kW) |
| Weight TOP | 28263.2 lbs (12820.0 kg) |
| Lift Capacity TOP | 8542.9 lbs (3875.0 kg) |
| Transmission Type TOP | Partial power shift with hydraulic wet disc clutch |
| Length TOP | 223.2 in. (567.0 cm) |
| Pump Flow TOP | 33.0 GPM (124.9 LPM) |
| Years Made | 1979-1982 |
| Engine Model | John Deere |
| Engine Type | 4-stroke, liquid-cooled, inline |
| Fuel Type | Diesel |
| Cylinders | 6 |
| Horsepower | 275.1 HP (205.1 kW) |
| Displacement | 618.8 cu in. (10140 cc) |
| Bore | 5.12 in. (13.00 cm) |
| Stroke | 5.00 in. (12.70 cm) |
| Rear PTO Type | Independent |
| Rear PTO Speed | 1000 RPM |
| Rated RPM | 2100 RPM |
| Compression Ratio | 15.2:1 |
| Battery | 12V |
| Starter | Electric |
| Length | 223.2 in. (567.0 cm) |
| Height | Cab Height: 126.4 in. (321.0 cm) |
| Wheelbase | 124.8 in. (317.0 cm) |
| Ground Clearance | 18.1 in. (46.0 cm) |
| Fuel Tank Capacity | 214.0 gal (810.0 l) |
| Oil Capacity | 6.5 gal (24.6 l) |
| Coolant Capacity | 12.0 gal (45.4 l) |
| Transmission Oil Capacity | 41.0 gal (155.2 l) |
| Hydraulic Capacity | 41.0 gal (155.2 l) |
| Transmission Type | Partial power shift with hydraulic wet disc clutch |
| Transmission Model | John Deere Quad-Range |
| Gears | 16 forward and 6 reverse |
| Chassis | 4×4 MFWD 4WD |
| Max. Travel Speed | Forward: 20.2 MPH (32.5 km/h) Reverse: 13.5 MPH (21.7 km/h) |
| Brakes | Hydraulic wet disc |
| Differential Lock | Hydraulic front and rear |
| Drawbar Category | III/IIIN |
| Cabin Type | Cab |
| Steering Type | Articulated power |
| Front Tires | Ag: 18.4-34 |
| Rear Tires | Ag: 18.4-34 |
| Hydraulic Type | Closed center |
| Pump Flow | 33.0 GPM (124.9 LPM) |
| Valves | 2 |
| Lift Capacity | 8542.9 lbs (3875.0 kg) |
| Weight | 28263.2 lbs (12820.0 kg) |
John Deere 8640 Specs (Weight, Lift Capacity, Hp, Dimensions)
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