| Manufacturer |
David Brown |
| Price |
22,100(USD) |
| Model |
1390 |
| Equipment Type |
Utility Tractors |
| Factory |
Meltham Mills, Huddersfield, England |
NEBRASKA TRACTOR TEST 1380 2
| Description |
Diesel 12-speed 4WD March 25 - April 10, 1980 Link: Nebraska Tractor Test 1380 file PTO performance Drawbar performance Gear 4-1 used for power test Gear 2-1 used for pull test |
| Power at rated engine speed |
60.59hp / 45.2kW |
| Fuel use |
4.0gal/hour / 15.1l/hour |
| Power at rated PTO speed |
58.40hp / 43.5kW |
| Max power |
50.26hp / 37.5kW |
| Max pull |
8624lbs / 3911kg |
DAVID BROWN 1390 POWER
| PTO (claimed) |
60hp / 44.7kW |
| Drawbar (tested) |
50.26hp / 37.5kW |
| PTO (tested) |
60.59hp / 45.2kW |
ENGINE DETAIL
The David Brown 1390 tractor features a robust J.I. Case 4-cylinder diesel engine with a significant displacement of 3.6L and a favorable compression ratio of 17:1, promoting efficient combustion and enhanced torque at a rated RPM of 2200. Its dual dry element air cleaner ensures optimal air filtration, crucial for maintaining engine performance and prolonging lifespan, especially in dusty or agricultural environments. With an oil capacity of 7.9 quarts and coolant capacity of 14.8 quarts, routine maintenance is straightforward, yet operators should regularly monitor fluid levels to avoid overheating or lubrication issues during prolonged use.
| Description |
J.I. Case diesel 4-cylinder liquid-cooled |
| Displacement |
219ci / 3.6L |
| Bore/Stroke |
3.94x4.50inches / 100x 114mm |
| Air cleaner |
dual dry element |
| Compression |
17:1 |
| Rated RPM |
2200 |
| Starter volts |
12 |
| Oil capacity |
7.9qts / 7.5L |
| Coolant capacity |
14.8qts / 14.0L |
DAVID BROWN 1390 ENGINE
The David Brown 1390, equipped with a J.I. Case 3.6L 4-cylinder diesel engine, offers a robust power output suitable for various agricultural tasks. Its compact size enables maneuverability in tight spaces, though the limited engine displacement could pose challenges in heavy-load scenarios. This model is optimal for small to moderate-sized farms, where efficiency and reliability are more critical than sheer power.
| Description |
J.I. Case 3.6L 4-cyl diesel |
TRANSMISSION
The David Brown 1390 tractor features a synchromesh transmission that offers smooth gear shifting with 12 forward and 4 reverse speeds, allowing for versatile operation across various terrains. Its hydraulic dry disc clutch provides efficient power transfer, but may require careful maintenance to prevent slippage. With an oil capacity of 28.5 quarts, proper lubrication is crucial for optimal performance and longevity in demanding agricultural tasks.
| Type |
synchromesh |
| Gears |
12 forward and 4 reverse |
| Clutch |
hydraulic dry disc |
| Oil capacity |
28.5qts / 27.0L |
SPEEDS
| Description |
With 16.9x30 rear tires |
MECHANICAL
The David Brown 1390 tractor features a robust 12-speed synchromesh transmission, offering smooth gear shifts and enhanced efficiency for various agricultural tasks. With optional 4WD and hydrostatic power steering, it provides better traction and maneuverability on uneven terrain, making it suitable for diverse farming scenarios. However, the mechanical drum brakes may limit stopping power under heavy loads, necessitating careful handling in demanding conditions.
| Chassis |
4x2 2WD/4x4 MFWD 4WD |
| Steering |
hydrostatic power |
| Brakes |
mechanical drum |
| Cab |
Two-post ROPS. Cab optional |
| Transmission |
12-speed synchromesh |
CAPACITY
| Fuel |
19gal / 71.9L |
| Hydraulic system |
7.1gal / 26.9L |
HYDRAULICS
| Type |
open center |
| Capacity |
7.1gal / 26.9L |
| Valves |
1 or 2 |
| Pump flow |
15.3gpm / 57.9lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540/1000 |
DAVID BROWN 1390 TIRES
The David Brown 1390 tractor features Ag front tires (7.50-16) and larger Ag rear tires (16.9-30), which provide substantial traction and stability, making it suitable for heavy-duty applications and off-field operations. The tire size configuration enhances load distribution and reduces soil compaction, a key advantage for agricultural tasks. However, the larger rear tires may limit maneuverability in tight spaces, so it's essential to consider the working environment when choosing this model.
| Ag front |
7.50-16 |
| Ag rear |
16.9-30 |
DIMENSIONS
| Wheelbase |
84inches / 213cm |
| Length |
135inches / 342cm |
| Height (exhaust) |
88inches / 223cm |
| Shiping weight |
5,500lbs / 2494kg |
| Max weight |
10,500lbs / 4762kg |
| 2WD Clearance (front axle) |
21inches / 53cm |
| 4WD Clearance (front axle) |
13inches / 33cm |
DIMENSIONS & TIRES
The David Brown 1390 tractor, with an 84-inch wheelbase and a weight of 5,500 lbs, offers stability and maneuverability on varied terrain, making it suitable for moderate agricultural tasks. Its tire specifications (7.50-16 front and 16.9-30 rear) provide a balance of traction and flotation, essential for both fieldwork and transport. However, the limited front tire width may pose challenges in extreme soil conditions or heavy implements, necessitating careful consideration of load distribution during operation.
| Wheelbase |
84inches / 213cm |
| Weight |
5,500lbs / 2494kg |
| Front tire |
7.50-16 |
| Rear tire |
16.9-30 |
J.I. CASE 56L LOADER
| Loader weight |
1500lbs / 680kg |
| Height (to pin) |
113.5inches / 288cm |
| Dump reach |
30inches / 76cm |
| Dump angle |
47° |
| Rollback angle |
17° |
| Breakout force (at pin) |
2550lbs / 1156kg |
| Lift to full height (at pin) |
1880lbs / 852kg |
| Bucket width |
48inches / 121cm 60inches / 152cm 66inches / 167cm 72inches / 182cm 83inches / 210cm |
1390 SERIAL NUMBERS
| Location |
Serial number stamped into the top of the tractor's frame on the right side, next to the engine |
| 1980 |
11120101 |
| 1981 |
11122928 |
| 1982 |
11126132 |
| 1983 |
11130040 |
ELECTRICAL
| Ground |
negative |
| Charging system |
alternator |
| Charging amps |
26 |
| Battery volts |
12 |
