| Manufacturer | David Brown |
| Price | 25,400(USD) |
| Model | 1490 |
| Equipment Type | Utility Tractors |
| Factory | Meltham Mills, Huddersfield, England |
NEBRASKA TRACTOR TEST 1381 2
| Description | Diesel 12-speed synchro 4WD March 17 - April 2, 1981 Link: Nebraska Tractor Test 1381 file PTO performance Drawbar performance Gear 3-2 used for power test Gear 2-1 used for pull test |
| Power at rated engine speed | 70.51hp / 52.6kW |
| Fuel use | 4.3gal/hour / 16.3l/hour |
| Power at rated PTO speed | 68.75hp / 51.3kW |
| Max power | 60.31hp / 45.0kW |
| Max pull | 9919lbs / 4499kg |
NEBRASKA TRACTOR TEST 1381 4
| Description | Diesel 12-speed power shift 2WD March 18 - April 2, 1981 Link: Nebraska Tractor Test 1381 file Drawbar performance Gear 2-3 used for power test Gear 1-4 used for pull test |
| Max power | 60.12hp / 44.8kW |
| Fuel use | 4.6gal/hour / 17.4l/hour |
| Max pull | 8405lbs / 3812kg |
DAVID BROWN 1490 POWER
| Engine | 83hp / 61.9kW |
| PTO (claimed) | 70hp / 52.2kW |
| Drawbar (tested) | 60.31hp / 45.0kW |
| PTO (tested) | 70.51hp / 52.6kW |
ENGINE DETAIL
The David Brown 1490 tractor features a turbocharged 4-cylinder engine with a displacement of 3.6L, delivering 83hp at 2200 RPM, resulting in efficient power for various agricultural tasks. A dual dry element air cleaner ensures optimal air intake, while the 16:1 compression ratio enhances fuel efficiency and torque output; however, this may require higher quality fuel. With an oil capacity of 7.8 quarts, maintenance is straightforward, but the 15-quart coolant system necessitates regular checks to prevent overheating during extended operation.
| Description | J.I. Case turbocharged diesel 4-cylinder liquid-cooled |
| Displacement | 219ci / 3.6L |
| Bore/Stroke | 3.939x4.500inches / 100x 114 mm |
| Power | 83hp / 61.9kW |
| Air cleaner | dual dry element |
| Compression | 16:1 |
| Rated RPM | 2200 |
| Firing order | 1-2-4-3 |
| Starter volts | 12 |
| Oil capacity | 7.8qts / 7.4L |
| Coolant capacity | 15qts / 14.2L |
DAVID BROWN 1490 ENGINE
The David Brown 1490 features a robust J.I. Case 3.6L 4-cylinder diesel engine, which can provide reliable performance for agricultural tasks due to its ample torque output. With a substantial fuel tank capacity of 36 gallons (136.3 liters), it offers extended operational time between refueling, making it well-suited for larger farming operations. Key considerations include the engine's maintenance requirements and potential fuel efficiency optimization based on load conditions.
| Description | J.I. Case 3.6L 4-cyl diesel |
| Fuel tank | 36gal / 136.3L |
TRANSMISSIONS OVERVIEW
The David Brown 1490 features a 12-speed synchromesh and a 12-speed partial power shift transmission, allowing for smooth gear transitions and efficient power management. This dual transmission system offers versatility in various field operations, enhancing operational efficiency, particularly in tasks requiring frequent speed adjustments. However, users may need to invest time in mastering the shifting techniques to maximize the benefits of this complex transmission setup.
| Description | 12-speed synchromesh/12-speed partial power shift |
TRANSMISSION 1
The David Brown 1490 tractor features a synchromesh transmission which provides smooth gear shifting, ideal for applications requiring frequent speed changes. With 12 forward and 4 reverse gears, it offers versatility in both fieldwork and transport tasks, though the complexity of the system may require meticulous maintenance. The hydraulic dry disc clutch contributes to effective power transfer, yet users should be aware of potential wear in demanding conditions.
| Type | synchromesh |
| Gears | 12 forward and 4 reverse |
| Clutch | hydraulic dry disc |
TRANSMISSION 2
The David Brown 1490 features a partial power shift transmission that allows for smoother gear transitions, enhancing load management during operations. With 12 forward and 4 reverse gears, it provides versatile speed options, making it suitable for diverse applications like plowing or hauling. However, the hydraulic dry disc clutch may require careful maintenance to prevent wear and ensure optimal performance under load.
| Type | partial power shift |
| Gears | 12 forward and 4 reverse |
| Clutch | hydraulic dry disc |
| Description | Three gears, plus reverse, with a four-range power shift. |
MECHANICAL
The David Brown 1490 tractor offers versatile drivetrain options with both 2WD and 4WD configurations, enhancing traction and stability in various terrains. It features a robust 12-speed synchromesh or a partial power shift transmission, allowing precise speed control for different tasks. The optional cab can provide operator comfort, but the two-post ROPS design may limit overhead protection compared to a fully enclosed cab in hazardous environments.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | Two-post ROPS. Cab optional |
| Transmissions | 12-speed synchromesh/12-speed partial power shift |
HYDRAULICS
| Type | open center |
| Pressure | 2000psi / 137.9bar |
| Valves | 1 |
| Total flow | 8.4gpm / 31.8lpm |
TRACTOR HITCH
| Rear Type | II |
| Rear lift | 4,400lbs / 1995kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/1000 |
DAVID BROWN 1490 TIRES
The David Brown 1490 tractor features 11L-15 front tires and 18.4-34 rear tires, promoting stability and traction on varied terrain. However, the larger rear tires may present challenges in tight spaces or hilly conditions due to increased width. When utilized in agricultural applications, the tractor's robust design supports effective tilling and towing capacity, making it well-suited for medium to heavy-duty farming tasks.
| Ag front | 11L-15 |
| Ag rear | 18.4-34 |
DIMENSIONS
| Wheelbase | 88.5inches / 224cm |
| Length | 143inches / 363cm |
| Width | 76.5inches / 194cm |
| Height (cab) | 105inches / 266cm |
| Height (exhaust) | 94inches / 238cm |
| 2WD Ground clearance | 21inches / 53cm |
| 4WD Ground clearance | 13inches / 33cm |
| Rear tread | 62 to 88inches / 157to 223 cm *With power-adjust rear wheels. |
DAVID BROWN 1490 WEIGHT
| 2WD ROPS Shipping | 6490lbs / 2943kg |
| 2WD Cab Shipping | 7580lbs / 3438kg |
| Max capacity | 11500lbs / 5216kg |
DIMENSIONS & TIRES
The David Brown 1490 tractor features a wheelbase of 88.5 inches, enhancing stability and maneuverability on uneven terrain. Weighing between 6490 to 7580 pounds, it provides sufficient ground traction suitable for heavy-duty field operations. The combination of 11L-15 front tires and 18.4-34 rear tires allows for excellent flotation in soft soils while maintaining effective grip, making it ideal for agricultural tasks requiring power and traction.
| Wheelbase | 88.5inches / 224cm |
| Weight | 6490 to 7580 pounds |
| Front tire | 11L-15 |
| Rear tire | 18.4-34 |
J.I. CASE 66L LOADER
| Height (to pin) | 126.8inches / 322cm |
| Dump reach | 43inches / 109cm |
| Dump angle | 45° |
| Rollback angle | 12° |
| Breakout force (at pin) | 4775lbs / 2165kg |
| Lift to full height (at pin) | 2100lbs / 952kg |
| Bucket width | 48inches / 121cm/60inches / 152cm/66inches / 167cm/72inches / 182cm/83inches / 210cm |
1490 SERIAL NUMBERS
| Location | Serial number stamped into the top of the tractor's frame on the right side, next to the engine |
| 1980 | 11180101 |
| 1981 | 11182782 |
| 1982 | 11185693 |
| 1983 | 11188540 |
ELECTRICAL
| Ground | negative |
| Battery volts | 12 |