The John Deere 4620 is a 2WD or 4WD row-crop tractor manufactured by John Deere in Waterloo, Iowa, USA from 1971 to 1972. The John Deere 4620 is equipped with a 6.6 L (404.0 cu·in) six-cylinder diesel engine and one of two transmissions: a partially synchronized transmission with dry disc clutch and 8 forward and 2 reverse gears or a full powershift transmission with hydraulic wet disc clutch and 8 forward and 4 reverse gears.
The John Deere 4620 row-crop tractor used the John Deere engine. It is a 6.6 L, 6,620 cm2, (404.0 cu·in) six-cylinder turbocharged intercooled diesel engine with 108.0 mm (4.25 in) of the cylinder bore and 121.0 mm (4.76 in) of the piston stroke. The compression ratio rating is 16.4:1. This engine produced 137 PS (100.7 kW; 135.0 HP) at 2,200 rpm of output power.
The JD 4620 is equipped with hydrostatic power steering, hydraulic wet disc brakes, open operator station (two-post Roll-Gard ROPS and canopy or cab was available as an option), and 189.3 liters (50.0 US gal.; 41.6 Imp. gal) fuel tank.
John Deere 4620 Specifications
| General Specifications | |
| Model | John Deere 4620 |
| Length | 4,330 mm (170.5 in) |
| Width |
Standard: 2,430 mm (95.7 in) Long axle: 2,740 mm (108.0 in) Extra long axle: 2,990 mm (118.0 in) |
| Height | 2,690 mm (105.9 in) |
| Wheel base | 2,700 mm (106.3 in) |
| Weight | 6,770 kg (14,925 lbs) |
| Fuel tank capacity | 189.3 liters (50 US gal.; 41.6 Imp. gal) |
| Battery | Two 6V |
| Cabin type | Open operator station, two-post Roll-Gard ROPS and canopy or cab. |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 6.6 L, 6,620 cm2, (404.0 cu·in) |
| Bore and stroke | 108.0 mm X 121.0 mm (4.25 in X 4.76 in) |
| Compression ratio | 16.4:1 |
| Horsepower | 137 PS (100.7 kW; 135.0 HP) at 2,200 rpm |
| Starter | Electric |
| Oil capacity: | 15.1 L (16 US. qt, 13.3 Imp. qt.) |
| Coolant capacity: | 26.5 L (28 US. qt, 23.3 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 MFWD 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic wet disc |
| Differential lock | Hydraulic |
| Transmission model | Syncro-Range |
| Transmission type | Partially synchronized with dry disc clutch |
| Gears | 8 forward and 2 reverse |
| Speed | Forward: 29.4 kmh (18.3 mph) Reverse: 8.9 (5.5 mph) |
| Transmission oil capacity | 60.6 L (16 US. gal, 13.3 Imp. gal.) |
| Transmission model | Power Shift |
| Transmission type | Full power shift with hydraulic wet disc clutch |
| Gears | 8 forward and 4 reverse |
| Speed | Forward: 29.7 kmh (18.5 mph) Reverse: 8.5 (5.3 mph) |
| Transmission oil capacity | 68.1 L (18 US. gal, 15 Imp. gal.) |
| Tires | |
| Front tires | Ag: 11.00-16 |
| Rear tires | Ag: 20.8-38 |
| Three-Point Hitch | |
| Caterogy | III/II |
| Control type | – |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center |