| Manufacturer | Case |
| Price | 100,000(USD) |
| Model | 4890 |
| Equipment Type | Four-wheel Drive 4WD Tractors |
| Factory | Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 1330 2
| Description | Diesel 12-speed 4WD October 22 - 29, 1979 Link: Nebraska Tractor Test 1330 file PTO performance Drawbar performance Gear 8 used for power test Gear 1I used for pull test |
| Power at rated engine speed | 253.41hp / 189.0kW |
| Fuel use | 15.4gal/hour / 58.3l/hour |
| Max power | 218.68hp / 163.1kW |
| Max pull | 27,627lbs / 12531kg |
J.I. CASE 4890 POWER
| Engine | 300hp / 223.7kW |
| Drawbar (claimed) | 224hp / 167.0kW |
| PTO (claimed) | 253hp / 188.7kW |
| Drawbar (tested) | 218.68hp / 163.1kW |
| PTO (tested) | 253.41hp / 189.0kW |
ENGINE DETAIL
The Case 4890 tractor features a robust Saab-Scania turbocharged diesel engine with a displacement of 11.0L, producing 300hp at 2200 RPM, making it suitable for heavy-duty agricultural applications. Its high compression ratio of 14.7:1 enhances fuel efficiency and power output; however, this may necessitate high-quality diesel fuel to avoid knocking. With an oil capacity of 28.4 quarts and a coolant capacity of 44 quarts, regular maintenance and monitoring of engine fluids are crucial for optimal performance and longevity in demanding operational scenarios.
| Description | Saab-Scania turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 674ci / 11.0L |
| Bore/Stroke | 5.00x5.71inches / 127x 145mm |
| Power | 300hp / 223.7kW |
| Compression | 14.7:1 |
| Rated RPM | 2200 |
| Starter volts | 12 |
| Oil capacity | 28.4qts / 26.9L |
| Coolant capacity | 44qts / 41.6L |
J.I. CASE 4890 ENGINE
The Case 4890 tractor is powered by a robust Saab-Scania 11.0L 6-cylinder diesel engine, delivering high torque suitable for demanding agricultural tasks. With a substantial 150-gallon (567.8L) fuel tank, it offers extended operational range, reducing downtime due to refueling during long hours in the field. However, be aware of the increased weight and potential fuel management challenges associated with such a large tank volume.
| Description | Saab-Scania 11.0L 6-cyl diesel |
| Fuel tank | 150gal / 567.8L |
TRANSMISSION
The Case 4890 tractor's partial powershift transmission provides smooth gear transitions across 12 forward and 4 reverse gears, enhancing operational efficiency in diverse agricultural tasks. Its hydraulic dry disc clutch allows for consistent performance but may require periodic maintenance to ensure optimal engagement and longevity. The oil capacity of 52 quarts (49.2L) is sufficient to support the lubrication needs, potentially minimizing overheating risks during prolonged usage in demanding scenarios.
| Transmission | partial powershift |
| Gears | 12 forward and 4 reverse |
| Clutch | hydraulic dry disc |
| Oil capacity | 52qts / 49.2L |
| Description | Four ranges with three power shifts in each range |
SPEEDS
| Description | With 23.1-30 tires |
MECHANICAL
The Case 4890 tractor features a robust 4x4 4WD chassis that enhances traction and stability in varied terrain, making it suitable for both agricultural and heavy-duty applications. Its hydraulic steering system, combined with front, rear, or four-wheel crab steering, offers superior maneuverability, especially in tight spaces. The 12-speed transmission allows for efficient speed modulation across diverse operational scenarios, complementing its hydraulic dry disc brakes for reliable stopping power.
| Chassis | 4x4 4WD |
| Steering | hydraulic, front, rear or four-wheel crab steering |
| Brakes | hydraulic dry disc |
| Cab | Silent Guardian cab standard with air-conditioning |
| Transmission | 12-speed |
HYDRAULICS
| Type | closed center PFC |
| Pressure | 2250psi / 155.1bar |
| Valves | 2 to 4 |
| Pump flow | 24gpm / 90.8lpm |
| Total flow | 31gpm / 117.3lpm |
TRACTOR HITCH
| Rear Type | III |
| Rear lift (at 24 | 12,750lbs / 5783kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 1000 |
J.I. CASE 4890 TIRES
The Case 4890 tractor is equipped with dual tire options for both front and rear, offering flexibility in performance and traction depending on soil conditions. The 20.8-34 front tires provide a stable footprint, while the rear options ranging from 20.8-34 to 30.5-32 allow for varied load capacities and flotation, which can enhance agronomic performance in diverse farming scenarios. However, considerations for tire size might affect the overall weight distribution and power efficiency, requiring careful selection based on the specific agricultural application.
| Ag front | 20.8-34 |
| Ag rear | 20.8-34/23.1-30/24.5-32/30.5-32 |
DIMENSIONS
| Wheelbase | 110inches / 279cm |
| Length | 243inches / 617cm |
| Width | 99inches / 251cm |
| Operating weight | 25,750lbs / 11680kg |
| Ballasted weight | 28,460lbs / 12909kg |
| Ground clearance | 18inches / 45cm |
| Front tread | 74 to 94inches / 187to 238cm |
| Rear tread | 74 to 94inches / 187to 238cm |
DIMENSIONS & TIRES
The Case 4890 tractor features a wheelbase of 110 inches, providing stability for heavy towing and field operations. Weighing 25,750 lbs, it offers substantial traction and ground contact, ideal for challenging terrains but may pose mobility issues on softer soils. The uniform 18.4-34 tire size enhances balanced weight distribution and minimizes soil compaction, making it suitable for row crop applications.
| Wheelbase | 110inches / 279cm |
| Weight | 25,750lbs / 11680kg |
| Front tire | 18.4-34 |
| Rear tire | 18.4-34 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 72 |
| Battery volts | 12 |