The John Deere 8630 is a 4WD four-wheel drive tractor from the Generation II series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1975 to 1978. The John Deere 8630 is equipped with a 10.1 L (619.0 cu·in) six-cylinder diesel engine and a partial power shift transmission with 16 forward and 4 reverse gears and hydraulic wet disc clutch.
The JD 8630 four-wheel drive tractor used the John Deere engine. It is a 10.1 L, 10,144 cm2, (619.0 cu·in) six-cylinder turbocharged diesel engine with 130.0 mm (5.12 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 15.4:1. This engine produced 278.9 PS (205.1 kW; 275.0 HP) at 2,100 rpm of output power.
The John Deere 8630 is equipped with hydraulic power steering, hydraulic wet disc brakes, Sound-Gard cab (standard), and 590.5 liters (156 US gal.; 129.9 Imp. gal) fuel tank.
John Deere 8630 Specifications
| General Specifications | |
| Model | John Deere 8630 |
| Length | 5,670 mm (223.2 in) |
| Width | 2,430 mm (95.7 in) |
| Height (exhaust) | 3,410 mm (134.3 in) |
| Wheel base | 3,170 mm (124.8 in) |
| Ground clearance | 490 mm (19.3 in) |
| Weight | 11,110 kg (24,493 lbs) |
| Fuel tank capacity | 590.5 liters (156 US gal.; 129.9 Imp. gal) |
| Battery | Two 6V, CCA 975A |
| Cabin type | Sound-Gard cab (standard) |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 10.1 L, 10,144 cm2, (619.0 cu·in) |
| Bore and stroke | 130.0 mm X 127.0 mm (5.12 in X 5 in) |
| Compression ratio | 15.4:1 |
| Horsepower | 278.9 PS (205.1 kW; 275.0 HP) at 2,100 rpm |
| Starter | Electric |
| Coolant capacity: | 41.6 L (44 US. qt, 36.6 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 articulated 4WD |
| Steering type | Hydraulic power |
| Brakes | Hydraulic wet disc |
| Transmission model | John Deere Quad-Range |
| Transmission type | Partial power shift with hydraulic wet disc clutch |
| Gears | 16 forward and 4 reverse |
| Speed | Forward: 32.7 kmh (20.3 mph) Reverse: 17.9 (11.1 mph) |
| Tires | |
| Front tires | Ag: 18.4-34 |
| Rear tires | Ag: 18.4-34 |
| Three-Point Hitch | |
| Category | III |
| 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 constant pressure |
| Hydraulic capacity | 98.4 L (26 US. gal, 21.6 Imp. gal.) |
| Valves | 2 |
| Pump flow | 33.0 gpm (124.9 lpm) |