The J.I. Case 4890 is a four-wheel drive tractor from the series. This tractor was manufactured by J.I. Case in Racine, Wisconsin, USA from 1979 to 1983. The J.I. Case 4890 is equipped with a 11.0 L (673.9 cu·in) six-cylinder diesel engine and a partial powershift transmission with 12 forward and 4 reverse gears.
The J.I. Case 4890 four-wheel drive used the Saab-Scania engine. It is a 11.0 L, 11,044 cm2, (673.9 cu·in) six-cylinder turbocharged diesel engine with 127.0 mm (5 in) of the cylinder bore and 145.0 mm (5.71 in) of the piston stroke. The compression ratio rating is 14.7:1. This engine produced 304.2 PS (223.7 kW; 300.0 HP) at 2,200 rpm of output power.
The J.I. Case 4890 is equipped with hydraulic, front, rear or four-wheel crab steering, hydraulic dry disc brakes, Silent Guardian cab (standard) and 567.8 liters (150 US gal.; 124.9 Imp. gal) fuel tank.
J.I. Case 4890 Specifications
| General Specifications | |
| Model | J.I. Case 4890 |
| Length | 6,170 mm (242.9 in) |
| Width | 2,510 mm (98.8 in) |
| Height | – |
| Wheel base | 2,790 mm (109.8 in) |
| Ground clearance | 450 mm (17.7 in) |
| Weight (operating) | 11,680 kg (25,750 lbs) |
| Fuel tank capacity | 567.8 liters (150 US gal.; 124.9 Imp. gal) |
| Battery | 12V |
| Cabin type | Silent Guardian cab (standard) |
| Engine | |
| Engine model | Saab-Scania |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 11.0 L, 11,044 cm2, (673.9 cu·in) |
| Bore and stroke | 127.0 mm X 145.0 mm (5 in X 5.71 in) |
| Compression ratio | 14.7:1 |
| Horsepower | 304.2 PS (223.7 kW; 300 HP) at 2,200 rpm |
| Starter | Electric |
| Oil capacity: | 26.9 L (28.4 US. qt, 23.7 Imp. qt.) |
| Coolant capacity: | 41.6 L (44 US. qt, 36.6 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 4WD |
| Steering type | Hydraulic, front, rear or four-wheel crab steering |
| Brakes | Hydraulic dry disc |
| Transmission model | – |
| Transmission type | Partial powershift with hydraulic dry disc clutch |
| Gears | 12 forward and 4 reverse |
| Speed | Forward: 28.0 kmh (17.4 mph) Reverse: 28.0 kmh (17.4 mph) |
| Transmission oil capacity | 49.2 L (13 US. gal, 10.8 Imp. gal.) |
| Tires | |
| Front tires | Ag: 18.4-34 |
| Rear tires | Ag: 18.4-34 |
| Three-Point Hitch | |
| Category | III |
| Control type | – |
| Lift capacity (at 610 mm/24 in) | 5,783 kg (12,750 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 1000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center PFC |
| Pressure | 2250 psi (155.1 bar) |
| Valves | 2 to 4 |
| Pump flow | 24.0 gpm (90.8 lpm) |
| Total flow | 31.0 gpm (117.3 lpm) |
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