| Manufacturer | Case |
| Price | - |
| Model | 990 |
| Equipment Type | Utility Tractors |
| Factory | Meltham Mills, Huddersfield, England |
NEBRASKA TRACTOR TEST 1144 2
| Description | Diesel 12-speed 2WD September 17 - October 1, 1973 Link: Nebraska Tractor Test 1144 file PTO performance Drawbar performance |
| Power at rated engine speed | 53.77hp / 40.1kW |
| Fuel use | 3.4gal/hour / 12.9l/hour |
| Power at rated PTO speed | 50.48hp / 37.6kW |
| Max power | 45.68hp / 34.1kW |
| Max pull | 7,335lbs / 3327kg |
J.I. CASE 990 POWER
| Engine (net) | 58hp / 43.3kW |
| Drawbar (claimed) | 45.2hp / 33.7kW |
| PTO (claimed) | 52.9hp / 39.4kW |
| Drawbar (tested) | 45.68hp / 34.1kW |
| PTO (tested) | 53.77hp / 40.1kW |
ENGINE DETAIL
The Case 990 tractor features a robust David Brown 4-cylinder diesel engine with a displacement of 3.2L and a compression ratio of 17:1, offering efficient power delivery at rated RPM of 2200. The oil bath air cleaner improves engine longevity by minimizing dust intake, while the coolant capacity of 14.8 quarts helps maintain optimal operating temperatures under varied conditions. However, users should be aware of the maintenance requirements associated with an oil bath air cleaner and the importance of regular oil changes to ensure reliability.
| Description | David Brown diesel 4-cylinder liquid-cooled |
| Displacement | 195ci / 3.2L |
| Bore/Stroke | 3.939x4.00inches / 100x 102 mm |
| Air cleaner | oil bath |
| Compression | 17:1 |
| Rated RPM | 2200 |
| Operating RPM | 700-2200 |
| Starter volts | 12 |
| Oil capacity | 7.9qts / 7.5L |
| Coolant capacity | 14.8qts / 14.0L |
J.I. CASE 990 ENGINE
The Case 990 tractor is powered by a David Brown 3.2L 4-cylinder diesel engine, providing efficient fuel consumption suitable for medium-duty farming tasks. With a fuel tank capacity of 17.9 gallons (67.8 liters), it offers a reasonable range for extended work hours, reducing the need for frequent refueling. However, operators should consider the engine's power output and torque characteristics, as they may affect performance in heavier applications or on varied terrains.
| Description | David Brown 3.2L 4-cyl diesel |
| Fuel tank | 17.9gal / 67.8L |
TRANSMISSION
The Case 990 tractor features a partially synchronized transmission that allows for smooth upshifts between gears 1-2-3 and synchronized downshifts from 3-to-2, enhancing operational efficiency during fieldwork. With 12 forward and 4 reverse gears, it provides versatility for various terrains, though the limited reverse gear options may present challenges in tight maneuvering scenarios. The 280mm dry disc clutch requires proper maintenance to ensure optimal engagement and longevity, and a total oil capacity of 28.5 quarts supports effective cooling and lubrication under heavy-duty operations.
| Type | partially synchronized |
| Gears | 12 forward and 4 reverse |
| Clutch | 280mm dry disc |
| Oil capacity | 28.5qts / 27.0L |
| Description | Three gears, plus reverse, in four ranges. Synchronized up-shifting between gears 1-2-3 and synchronized down-shifting from 3-to-2. |
MECHANICAL
The Case 990 tractor, equipped with a 4x2 or 4x4 transmission, offers flexibility in terrain handling, making it suitable for both flat and hilly landscapes. Its hydrostatic power steering enhances maneuverability, while the hydraulic drum brakes provide reliable stopping power under various load conditions. The 12-speed partially synchronized transmission facilitates smooth gear shifts, but operators may need to manage synchronization carefully to prevent wear during aggressive shifts.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Steering | hydrostatic power |
| Brakes | hydraulic drum |
| Cab | Weather frame cab standard. |
| Transmission | 12-speed partially synchronized |
HYDRAULICS
| Type | open center |
| Pressure | 2000psi / 137.9bar |
| Total flow | 7.4gpm / 28.0lpm |
TRACTOR HITCH
| Rear Type | II/I |
| Rear lift | 2000lbs / 907kg (recommended)/4250lbs / 1927kg (maximum) |
POWER TAKE-OFF (PTO)
| Rear PTO | transmission/live (optional) |
| Rear RPM | 540/1000 (1.375) |
J.I. CASE 990 TIRES
The Case 990 tractor features standard agricultural tires: 6.00-19 for the front in 2WD configuration and 9.5-24 in 4WD, both paired with rear tires of 12.4-36. The 2WD allows for effective traction in moderately flat terrains, while the 4WD option provides enhanced stability and grip on uneven ground, making it versatile for diverse agricultural tasks. However, the tire size may limit flotation in very soft soils, necessitating careful selection based on field conditions to avoid soil compaction or tire slippage.
| Standard tires (ag) | Front: 6.00-19. Rear: 12.4-36 (2WD)/Front: 9.5-24. Rear: 12.4-36 (4WD) |
DIMENSIONS
| Wheelbase | 82inches / 208cm |
| Length | 129inches / 327cm |
| Width | 67inches / 170cm (min) |
| Weight | 5760lbs / 2612kg (2WD)/6700lbs / 3039kg (4WD) |
| Clearance (front axle) | 21inches / 53cm (2WD)/15inches / 38cm (4WD) |
| Clearance (drawbar) | 16inches / 40cm |
| Front tread | 60/64/68/72inches / 152/162/172/182 cm(4WD) |
| Rear tread | 52/56/60/64/68/72/76inches / 132/142/152/162 / 172/182/193 cm |
J.I. CASE 990 HEIGHT
| Cab | 92.5inches / 234cm (Low-Profile)/104inches / 264cm (De-Luxe Cab)/99inches / 251cm (Q-Cab) |
DIMENSIONS & TIRES
The Case 990 tractor features an 82-inch wheelbase, offering stability for various agricultural tasks, though the limited length may affect maneuverability in tight spaces. Weighing between 5760 to 6700 pounds, its heft supports traction and reduces slippage under load; however, this weight can be a challenge in soft soil conditions. With 6.00-19 front tires and larger 12.4-36 rear tires, the 2WD configuration may enhance power to the rear, but could limit overall traction and performance in uneven terrain compared to a 4WD system.
| Wheelbase | 82inches / 208cm |
| Weight | 5760 to 6700 pounds |
| Front tire | 6.00-19 |
| Rear tire | 12.4-36 (2WD) |
990 SERIAL NUMBERS
| Location | Serial number on the right side of the tractor frame. |
| 1961 | 440001 |
| 1962 | 441323 |
| 1963 | 450376 |
| 1964 | 460376 |
| 1965 | 472273 |
| 1966 | 483768 |
| 1967 | 496283 |
| 1968 | 504690 |
| 1969 | 808150 |
| 1970 | 818301 |
| 1971 | 826009 |
| 1972 | 850600 |
| 1973 | 854403 |
| 1974 | 859367 |
| 1975 | 863900 |
| 1976 | 11070001 |
| 1977 | 11080236 |
| 1978 | 11089141 |
| 1979 | 11096828 |
| 1980 | 11104577 |
ELECTRICAL
| Charging system | alternator |
| Battery volts | 12 |
| Battery AH | 96 |