The John Deere 4630 is a 2WD or 4WD row-crop tractor from the Generation II series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1973 to 1977.
The John Deere 4630 row-crop tractor used the John Deere engine. It is a 6.6 L, 6,620 cm2, (404 cu·in) six-cylinder aftercooled turbocharged diesel engine with 108.0 mm (4.25 in) of the cylinder bore and 120.0 mm (4.72 in) of the piston stroke. The compression ratio rating is 15.1:1. The John Deere motor used a direct injection fuel system, a dry-type air cleaner with the secondary element, ether injection pre-heating system, full pressure, full flow lubrication system with bypass and micronic filter element; pressure cooling system with centrifugal pump and thermostatic heat control; Delco-Remy electric starter. This engine produced 166 PS (122 KW; 164 HP) of maximum output power.
The John Deere 4630 is equipped with full-power hydrostatic power steering, full-power wet disc differential brakes, Sound-Gard cab with air-conditioning and 246 liters (65 US gal.; 54.1 Imp. gal) fuel tank. The JD 4430 was available with John Deere 158 loader.
The JD 4630 tractor used one of three transmissions:
- John Deere Syncro-Range: partially synchronized transmission and Perma-Clutch with triple wet disc (8 forward and 2 reverse gears)
- John Deere Quad-Range: partial power shift transmission and Perma-Clutch with triple wet disc (16 forward and 6 reverse gears)
- John Deere Power Shift: full power shift transmission with wet disc clutch (8 forward and 2 reverse gears)
John Deere 4630 Specifications
| General Specifications | |
| Model | John Deere 4630 |
| Length | 4,350 mm (171.3 in) |
| Width | 2,430 mm (95.7 in) |
| Height | 2,970 mm (116.9 in) |
| Wheel base | 2,860 mm (112.6 in) |
| Weight | 6,070 kg (13382 lbs) |
| Fuel tank capacity | 246 liters (65 US gal.; 54.1 Imp. gal) |
| Battery | Two 6V CCA: 800, Group 5D |
| Cabin type | Sound-Gard cab with a/c |
| 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 cu·in) |
| Bore and stroke | 108.0 mm X 120.0 mm (4.25 in X 4.72 in) |
| Compression ratio | 15.1:1 |
| Horsepower | 166 PS (122 KW; 164 HP) |
| Starter | Electric |
| Oil capacity: | 15.6 L (16.48 US. qt, 13.73 Imp. qt.) |
| Coolant capacity: | 34.0 L (35.93 US. qt, 29.92 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 HFWD 4WD |
| Steering type | Full-power hydrostatic power |
| Brakes | Full-power wet disc differential |
| Transmission model | John Deere Syncro-Range |
| Transmission type | Partially synchronized with hydraulic wet disc clutch |
| Gears | 8 forward and 2 reverse |
| Transmission model | John Deere Quad-Range |
| Transmission type | Partial power shift with hydraulic wet disc clutch |
| Gears | 16 forward and 6 reverse |
| Transmission model | John Deere Power Shift |
| Transmission type | Full power shift with hydraulic wet disc clutch |
| Gears | 8 forward and 4 reverse |
| Speed | Forward: 28.5 kmh (17.7 mph) Reverse: 9.5 (5.9 mph) |
| Tires | |
| Front tires | Ag: 10.00-16 |
| Rear tires | Ag: 18.4-38 |
| Three-Point Hitch | |
| Caterogy | III/IIIN |
| Control type | – |
| Lift capacity | 2380 kg (5248 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO spped | 1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center |
| Hydraulic capacity | 60.0 L (63.4 US. qt, 52.79 Imp. qt.) |