| Manufacturer | CaseIH |
| Price | 26,000(USD) |
| Model | 1594 |
| Equipment Type | Utility Tractors |
| Factory |
NEBRASKA TRACTOR TEST 1546 2
| Description | Diesel synchromesh 2WD October 24 - November 2, 1984 Link: Nebraska Tractor Test 1546 file PTO performance Drawbar performance Gear 7 used for power test Gear 4 used for pull test |
| Power at rated engine speed | 85.90hp / 64.1kW |
| Fuel use | 5.1gal/hour / 19.3l/hour |
| Power at rated PTO speed | 80.83hp / 60.3kW |
| Max power | 72.17hp / 53.8kW |
| Max pull | 8,331lbs / 3778kg |
NEBRASKA TRACTOR TEST 1547 2
| Description | Diesel Hydra-Shift 2WD October 23 - 30, 1984 Link: Nebraska Tractor Test 1547 file PTO performance Drawbar performance Gear 7 used for power test Gear 4 used for pull test |
| Power at rated engine speed | 85.54hp / 63.8kW |
| Fuel use | 5.1gal/hour / 19.3l/hour |
| Power at rated PTO speed | 81.94hp / 61.1kW |
| Max power | 69.37hp / 51.7kW |
| Max pull | 8,198lbs / 3718kg |
CASEIH 1594 POWER
| Engine | 97hp / 72.3kW |
| Drawbar (claimed) | 74hp / 55.2kW |
| PTO (claimed) | 86hp / 64.1kW |
| Drawbar (tested) | 72.17hp / 53.8kW |
| PTO (tested) | 85.90hp / 64.1kW |
ENGINE DETAIL
The CaseIH 1594 tractor features a robust 6-cylinder diesel engine with a significant displacement of 5.4L, generating a power output of 97hp at 2300 RPM, making it suitable for medium to heavy agricultural tasks. With a peak torque of 242.7 lb-ft available at a low 1425 RPM, this model offers strong pulling capabilities, ideal for plowing and towing applications. However, the dual air cleaner system and compression ratio of 16:1 may lead to increased maintenance and operational costs, particularly in dusty environments.
| Description | Case diesel 6-cylinder liquid-cooled |
| Displacement | 329ci / 5.4L |
| Bore/Stroke | 3.937x4.500inches / 100x 114mm |
| Power | 97hp / 72.3kW |
| Air cleaner | dual paper elements with pre-cleaner |
| Compression | 16:1 |
| Rated RPM | 2300 |
| Torque | 242.7lb-ft / 329.1Nm |
| Torque RPM | 1425 |
| Starter volts | 12 |
| Oil capacity | 13.2qts / 12.5L |
| Coolant capacity | 16.2qts / 15.3L |
CASEIH 1594 ENGINE
The CaseIH 1594 tractor is powered by a Case 5.4L 6-cylinder diesel engine, providing robust torque for demanding agricultural tasks. With a fuel tank capacity of 36 gallons (136.3 liters), it allows for extended operation periods, minimizing downtime for refueling on large farms. However, weigh fuel economy and maintenance costs carefully, as these can impact long-term operational efficiency.
| Description | Case 5.4L 6-cyl diesel |
| Fuel tank | 36gal / 136.3L |
TRANSMISSIONS OVERVIEW
The CaseIH 1594 features a 12-speed synchromesh transmission combined with a 12-speed partial power shift, providing smooth shifting and enhanced versatility for varying load conditions. This design allows operators to maintain engine efficiency while optimizing power delivery during fieldwork or transport tasks. However, operators may need to adapt to the complexity of the transmission system, as mastering the shifting patterns can initially be a challenge.
| Description | 12-speed synchromesh 12-speed partial power shift |
TRANSMISSION 1
The CaseIH 1594 features a synchromesh transmission with 12 forward and 4 reverse gears, providing smooth gear shifting and flexibility for various field operations. Its oil capacity of 33.6 quarts (31.8 liters) supports efficient lubrication and cooling of the transmission system; however, regular maintenance is crucial to prevent wear and optimize performance. Overall, the synchromesh design enhances operator comfort, making it suitable for tasks requiring frequent gear changes, such as tilling or plowing.
| Type | synchromesh |
| Gears | 12 forward and 4 reverse |
| Oil capacity | 33.6qts / 31.8L |
TRANSMISSION 2
The CaseIH 1594 features a Hydra-Shift partial power shift transmission, allowing for smooth gear transitions with 12 forward and 4 reverse gears to optimize field operations. This design enhances productivity while reducing mechanical strain, though it may require additional maintenance compared to a standard manual transmission. The oil capacity of 33.6 quarts (31.8L) is essential for efficient lubrication and cooling, ensuring optimal performance and longevity of the transmission system, but operators must monitor levels regularly to prevent overheating and wear.
| Transmission | Hydra-Shift |
| Type | partial power shift |
| Gears | 12 forward and 4 reverse |
| Oil capacity | 33.6qts / 31.8L |
MECHANICAL
The CaseIH 1594 tractor features a 4x2 2WD option with an upgrade to 4x4 MFWD, providing versatility in traction depending on terrain conditions, which can be advantageous in varied agricultural applications. Its hydrostatic power steering enhances maneuverability, while the differential hydraulic wet disc brakes ensure reliable stopping power under heavy loads. The available 12-speed synchromesh and partial power shift transmissions allow for precision control in speed and power application, making it suitable for tasks requiring both fine control and heavy pulling capabilities.
| Chassis | 4x2 2WD/4x4 MFWD 4WD (optional) |
| Steering | hydrostatic power |
| Brakes | differential hydraulic wet disc |
| Cab | ROPS or cab |
| Transmissions | 12-speed synchromesh 12-speed partial power shift |
HYDRAULICS
| Type | open center |
| Pressure | 2600psi / 179.3bar |
| Valves | 2 |
| Total flow | 10.5gpm / 39.7lpm 20.1gpm / 76.1lpm (tandem) |
| Steering flow | 7.7gpm / 29.1lpm |
| Steering press. | 1850psi / 127.6bar |
TRACTOR HITCH
| Rear Type | II |
| Rear lift (at ends) | 7,440lbs / 3374kg |
| Rear lift (at 24 | 6,290lbs / 2853kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/1000 |
CASEIH 1594 TIRES
The CaseIH 1594 tractor offers versatile tire options for both 2WD and 4WD configurations, with Ag front tires ranging from 10.00-16 to 13.6-28 and rear tires from 14.9-24 to 18.6-38. This flexibility in tire sizes can enhance traction and stability across various terrains, particularly advantageous in agricultural applications. However, the selection of tire size may impact fuel efficiency and maneuverability, necessitating careful consideration based on the intended field conditions and tasks.
| Ag front | 10.00-16 (2WD)/13.6-24 (4WD)/13.6-28 (4WD) |
| Ag rear | 16.9-38 / 18.4-34 / 14.9-24 / 18.6-38 |
DIMENSIONS
| Wheelbase | 100inches / 254cm |
| Length | 164inches / 416cm |
| Width | 78inches / 198cm |
| Height (cab) | 107inches / 271cm |
| Ground clearance | 16inches / 40cm (2WD) 15inches / 38cm (4WD) |
| Front tread | 60 to 76inches / 152to 193cm (4WD) |
| Rear tread | 56 to 84inches / 142to 213cm |
CASEIH 1594 WEIGHT
| Operating | 9,290lbs / 4213kg (2WD cab) |
| Ballasted | 11,210lbs / 5084kg |
| Max capacity | 13,500lbs / 6123kg |
| Max Drawbar | 3,300lbs / 1496kg (PTO position) |
| Max front axle | 7,500lbs / 3402kg (2WD) 8,000lbs / 3628kg (4WD) |
| Max rear axle | 12,000lbs / 5443kg |
DIMENSIONS & TIRES
The CaseIH 1594 tractor features a 100-inch wheelbase, providing enhanced stability and maneuverability for various field operations. Weighing 9,290 lbs (4,213 kg), it delivers substantial traction, particularly with rear tires sized 16.9-38, making it suitable for heavy-duty towing and plowing tasks. However, the front tire size of 10.00-16 may limit its capabilities in extremely muddy conditions, where larger front tires could improve flotation.
| Wheelbase | 100inches / 254cm |
| Weight | 9,290lbs / 4213kg |
| Front tire | 10.00-16 |
| Rear tire | 16.9-38 |
1594 SERIAL NUMBERS
| Location | On right side of main frame |
| 1985 | 11526001 |
| 1986 | 11526518 |
| 1987 | 11527297 |
| 1988 | 11528442 |
ELECTRICAL
| Charging system | alternator |
| Charging amps | 45/65 (heavy duty) |
| Battery CCA | 420/550 (heavy duty) |
| Battery volts | 12 |
| Battery AH | 96/128 (heavy duty) |