Ford
Ford 3900
The Ford 3900 is a utility tractor produced from 1975 to 1981. It features a Ford 2.9L 3-cylinder liquid-cooled diesel engine producing 47 hp (35.0 kW) gross power. The tractor has an 8-speed gear transmission with 2 reverse gears and a 280mm dry disc clutch. It is two-wheel drive with optional mechanical rear differential lock and mechanical wet disc brakes. The tractor includes a rear Type I hitch with position and draft control and a rear lift capacity of 3417 lbs (1549 kg). The rear PTO is independent with a 540 RPM type. Dimensions include a 77.6 inch (197 cm) wheelbase, 134.7 inch (342 cm) length, 73.2 inch (185 cm) width, and 90.6 inch (230 cm) height with ROPS. The tractor weighs 4766 lbs (2161 kg). Electrical system includes a 28 amp alternator and 12 volt battery with 128 AH capacity. ROPS is standard with a cab available as an option.
Power47 hp
Founded1975 - 1981
Model3900
Technical Specifications
Detailed specifications and technical data for Ford 3900
Power
| Engine (gross) | 47 hp (35.0 kW) |
|---|
Engine
| Model | Ford 2.9L 3-cyl diesel |
|---|---|
| Torque | 132.4 lb-ft (179.5 Nm) |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 3-cylinder |
| Fuel tank | 13 gal (49.2 L) |
| Rated RPM | 2000 |
| Torque RPM | 1200 |
| Air cleaner | dry |
| Bore/Stroke | 4.20x4.20 inches (107 x 107 mm) |
| Fuel system | indirect injection |
| Displacement | 175 ci (2.9 L) |
| Oil capacity | 7.4 qts (7.0 L) |
| Starter volts | 12 |
| Coolant capacity | 10.6 qts (10.0 L) |
| Compression ratio | 16.3:1 |
Electrical
| Battery AH | 128 |
|---|---|
| Battery volts | 12 |
| Charging amps | 28 |
| Charging system | alternator |
Mechanical
| ROPS | standard. Cab available. |
|---|---|
| Drive | Two-wheel drive |
| Brakes | Mechanical wet disc brakes |
| Differential lock | mechanical rear Optional |
Production
| Type | Utility tractor |
|---|---|
| Years made | 1975 - 1981 |
| Manufacturer | Ford |
Transmission
| Type | gear |
|---|---|
| Gears | 8 forward and 2 reverse |
| Clutch | 280mm dry disc |
| Oil capacity | 13.7 qts (13.0 L) |
Tractor hitch
| Control | position and draft control |
|---|---|
| Rear Type | I |
| Rear lift capacity | 3417 lbs (1549 kg) |
Dimensions & Tires
| Width | 73.2 inches (185 cm) |
|---|---|
| Length | 134.7 inches (342 cm) |
| Weight | 4766 lbs (2161 kg) |
| Rear tire | 12.4/11x36 |
| Wheelbase | 77.6 inches (197 cm) |
| Front tire | 6.00x19 |
| Height (ROPS) | 90.6 inches (230 cm) |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Engine RPM | 540@1800 |
| Rear PTO Type | 540 (1.375) |