John Deere 4840
Type: Row-crop Tractors
Contents:
Production | |
| Manufacturer: | John Deere |
| Type: | Row-Crop tractor |
| Factory: | Waterloo, Iowa, USA |
| Original price: | $60,000 (1982 ) |
John Deere 4840 Power | |
| Drawbar (claimed): | 157 hp 117.1 kW |
| PTO (claimed): | 180 hp 134.2 kW |
| Drawbar (tested): | 151.21 hp 112.8 kW |
| PTO (tested): | 180.63 hp 134.7 kW |
Mechanical | |
| Chassis: | 4x2 2WD |
| Differential lock: | pedal-actuated hydraulic |
| Steering: | power |
| Brakes: | differential hydraulic wet disc |
| Cab: | Sound-Gard cab. |
| Transmission: | 8-speed full power shift |
Capacity | |
| Fuel: | 103 gal 389.9 L |
| Hydraulic system: | 16.5 gal 62.5 L |
Hydraulics | |
| Type: | closed center |
| Capacity: | 16.5 gal 62.5 L |
| Valves: | 2 or 3 |
| Pump flow: | 23 gpm 87.1 lpm |
Tractor hitch | |
| Rear Type: | III,IIIN |
| Rear lift: | 8,295 lbs 3762 kg |
Power Take-off (PTO) | |
| Rear PTO: | independent |
| Rear RPM: | 1000 (1.75) |
4840 Serial Numbers | |
| Location: | Rear of tractor. |
| 1978: | 1000 |
| 1979: | 4233 |
| 1980: | 7539 |
| 1981: | 11042 |
| 1982: | 14933 |
Electrical | |
| Ground: | negative |
| Charging system: | alternator |
| Batteries: | 2 |
| Battery volts: | 6 |
Engine Detail | |
| John Deere | |
| turbocharged intercooled diesel | |
| 6-cylinder | |
| liquid-cooled | |
| Displacement: | 466 ci 7.6 L |
| Bore/Stroke: | 4.5625x4.75 inches 116 x 121 mm |
| Air cleaner: | dual paper elements |
| Pre-heating: | ether injection |
| Compression: | 15.5:1 |
| Rated RPM: | 2200 |
| Idle RPM: | 800-2400 |
| Operating RPM: | 1500-2200 |
| Firing order: | 1-5-3-6-2-4 |
| Starter volts: | 12 |
| Coolant capacity: | 40 qts 37.9 L |
Transmission | |
| Transmission: | John Deere PowerShift |
| Type: | full power shift |
| Gears: | 8 forward and 4 reverse |
| Oil capacity: | 80 qts 75.7 L |
| Clutchless shift-on-the-move power shift between all eight forward and four reverse gears. Inching pedal provided for hooking up implements and other precision work. | |
Dimensions | |
| Wheelbase: | 118.5 inches 300 cm |
| Length: | 177 inches 449 cm |
| Width: | 96 inches 243 cm |
| 108 inches 274 cm (long axle) | |
| 118 inches 299 cm (long axle) | |
| Height (cab): | 117 inches 297 cm |
| Clearance (front axle): | 26 inches 66 cm |
| Clearance (rear axle): | 28 inches 71 cm |
| Clearance (drawbar): | 14.9 inches 37 cm |
| Rear axle: | Rack-and-pinion: 3.937 by 96 inches 99 by 2438 mm |
| Rear axle: | Rack-and-pinion: 3.937 by 108 inches 99 by 2743 mm |
| Rear axle: | Rack-and-pinion: 3.937 by 118 inches 99 by 2997 mm |
| Front tread: | 58 to 100 inches 147 to 254 cm |
| Rear tread: | 60 to 131.5 inches 152 to 334 cm |
