Production | |
| Manufacturer: | John Deere |
| Type: | Utility tractor |
| Factory: | Mannheim, Baden-Württemberg, Germany |
| The Canadian-market 1840 is similar to the US 2440 model. | |
John Deere 1840 Power | |
| Engine (net): | 70 hp 52.2 kW |
| PTO (claimed): | 60 hp 44.7 kW |
Mechanical | |
| Chassis: | 4x2 2WD |
| 4x4 MFWD 4WD | |
| Final drives: | planetary |
| Differential lock: | mechanical rear |
| Steering: | power |
| Brakes: | wet disc |
| Cab: | Open operator station. Cab optional. |
| Transmissions: | 8-speed unsynchronized gear |
| 8-speed partially synchronized | |
| 16-speed two-speed power shift | |
Hydraulics | |
| Type: | closed center |
Tractor hitch | |
| Rear Type: | II/I |
| Control: | position and draft control |
Power Take-off (PTO) | |
| Rear PTO: | independent |
| Rear RPM: | 540 (1.375) |
| 540/1000 (1.375) | |
Electrical | |
| Ground: | negative |
| Charging system: | alternator |
| Charging amps: | 33 |
| 55*Standard with cab, optional on open station. | |
| Charging volts: | 14 |
| Batteries: | 2 |
| Battery volts: | 12 |
Engine Detail | |
| John Deere | |
| diesel | |
| 4-cylinder | |
| liquid-cooled | |
| Displacement: | 239 ci 3.9 L |
| Bore/Stroke: | 4.19x4.33 inches 106 x 110 mm |
| Compression: | 16.8:1 |
| Rated RPM: | 2500 |
| Idle RPM: | 800-2660 |
| Operating RPM: | 1300-2500 |
| Torque: | 170 lb-ft 230.5 Nm |
| Torque RPM: | 1300 |
| Firing order: | 1-3-4-2 |
| Starter volts: | 12 |
| Intake valve clearance: | 0.014 inches 0.356 mm |
| Exhaust valve clearance: | 0.018 inches 0.457 mm |
Dimensions | |
| Wheelbase: | 89.7 inches 227 cm |
| Length: | 147 inches 373 cm |
| Height (hood): | 62 inches 157 cm |
| Weight: | 5476 lbs 2483 kg |