The John Deere 2840 is a 2WD utility tractor manufactured by John Deere in Mannheim, Baden-Württemberg, Germany from 1977 to 1979. The John Deere 2840 is equipped with a 5.4 L (329.0 cu·in) six-cylinder diesel engine and one of two transmissions: a two-speed power shift transmission with dry disc clutch and 12 forward and 6 reverse gears or a sliding gear transmission with 6 forward and 3 reverse gears.
The JD 2840 utility tractor used the John Deere engine. It is a 5.4 L, 5,391 cm2, (329.0 cu·in) six-cylinder natural aspirated diesel engine with 102.0 mm (4.02 in) of the cylinder bore and 110.0 mm (4.33 in) of the piston stroke. The compression ratio rating is 17.0:1. This engine produced 90.3 PS (66.4 kW; 89.0 HP) at 2,500 rpm of output power.
The John Deere 2840 is equipped with power assist steering, differential hydraulic wet disc brakes, open operator station or two-post Roll-Gard ROPS (optional), and 106.0 liters (28 US gal.; 23.3 Imp. gal) fuel tank. This tractor could be equipped with the John Deere 148 loader.
John Deere 2840 Specifications
| General Specifications | |
| Model | John Deere 2840 |
| Length | 4,060 mm (159.8 in) |
| Width | 2,280 mm (89.8 in) |
| Height | 1,870 mm (73.6 in) |
| Wheel base | 2,460 mm (96.9 in) |
| Weight | 3,945 kg (8,697 lbs) |
| Fuel tank capacity | 106.0 liters (28 US gal.; 23.3 Imp. gal) |
| Battery | Two 12V |
| Cabin type | Open operator station or two-post Roll-Gard ROPS (optional) |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 5.4 L, 5,391 cm2, (329.0 cu·in) |
| Bore and stroke | 102.0 mm X 110.0 mm (4.02 in X 4.33 in) |
| Compression ratio | 17.0:1 |
| Horsepower | 90.3 PS (66.4 kW; 89 HP) at 2,500 rpm |
| Starter | Electric |
| Coolant capacity: | 4.7 L (5 US. qt, 4.1 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Power assist |
| Brakes | Differential hydraulic wet disc |
| Final drive | Planetary |
| Differential lock | Mechanical rear |
| Transmission model | Hi-Lo |
| Transmission type | Two-speed power shift with dry disc clutch |
| Gears | 12 forward and 6 reverse |
| Speed | Forward: 28.3 kmh (17.6 mph) Reverse: 9.5 (5.9 mph) |
| Transmission model | – |
| Transmission type | Sliding gear |
| Gears | 6 forward and 3 reverse |
| Tires | |
| Front tires | Ag: 7.50-18 |
| Rear tires | Ag: 18.4-34 |
| Three-Point Hitch | |
| Caterogy | II |
| Control type | Draft sensing |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent with hydraulic clutch |
| Rear PTO speed | 540/1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center |
| Hydraulic capacity | 48.8 L (51.57 US. qt, 42.94 Imp. qt.) |
| Valves | 2 |
| Pump flow | 23.0 gpm (87.1 lpm) |
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