Overview
The Ford 3900 is a utility farm tractor produced between 1975 and 1981, featuring a 2.9L three-cylinder diesel engine rated at 47 gross horsepower. This two-wheel drive model is equipped with an 8-speed gear transmission and a rear Type I hitch with a lift capacity of 3,417 lbs.
Ideal Applications
Engine and Power Configuration:
The liquid-cooled 175 ci engine utilizes indirect injection to produce 132.4 lb-ft of torque at 1200 RPM and reaches its rated 47 gross horsepower at 2000 RPM.
Transmission and PTO Specifications:
Equipped with an 8-speed gear transmission featuring 8 forward and 2 reverse gears, the tractor provides an independent 540 RPM rear PTO at 1800 engine RPM.
Chassis and Dimensional Data:
Constructed with a 77.6-inch wheelbase and 4,766 lbs of weight, the vehicle is fitted with 6.00x19 front and 12.4/11x36 rear agricultural tires.
Production
| Description | Utility tractor |
|---|---|
| Manufacturer | Ford |
Engine
| Engine type | Ford 2.9L 3-cyl diesel |
|---|---|
| Fuel tank | 13 gal (49.2 L) |
| Air cleaner | dry |
| Bore/Stroke | 4.20x4.20 inches (107 x 107 mm) |
| Compression | 16.3:1 |
| Coolant capacity | 10.6 qts (10.0 L) |
| Description | Ford / diesel / 3-cylinder / liquid-cooled |
| Displacement | 175 ci (2.9 L) |
| Fuel system | indirect injection |
| Oil capacity | 7.4 qts (7.0 L) |
| Power (gross) | 47 hp (35.0 kW) |
| Rated RPM | 2000 |
| Starter | electric |
| Starter volts | 12 |
| Torque | 132.4 lb-ft (179.5 Nm) |
| Torque RPM | 1200 |
| Engine (gross) | 47 hp (35.0 kW) |
Transmission
| Clutch | 280mm dry disc |
|---|---|
| Gears | 8 forward and 2 reverse |
| Oil capacity | 13.7 qts (13.0 L) |
| Transmission type | 8-speed gear |
| Type | gear |
Mechanical
| Cab | ROPS standard. Cab available. |
|---|---|
| Description | Mechanical wet disc brakes |
| Differential lock | mechanical rear OptOptional |
| Drive type | Two-wheel drive |
Hitch
| Control | position and draft control |
|---|---|
| Rear lift | 3417 lbs (1549 kg) |
| Rear Type | I |
PTO
| Engine RPM | 540@1800 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery AH | 128 |
|---|---|
| Battery volts | 12 |
| Charging amps | 28 |
| Charging system | alternator |
Dimensions & Tires
| Height (ROPS) | 90.6 inches (230 cm) |
|---|---|
| Length | 134.7 inches (342 cm) |
| Weight | 4766 lbs (2161 kg) |
| Wheelbase | 77.6 inches (197 cm) |
| Width | 73.2 inches (185 cm) |
| Front tire | 6.00x19 |
| Rear tire | 12.4/11x36 |
| Weight | 4766 lbs (2161 kg) |
| Wheelbase | 77.6 inches (197 cm) |
| Standard tires (ag) | Front: 6.00x19. Rear: 12.4/11x36 |
References
| Description | 3900 4100 4600 published in 1979, by Ford* / *Publication contains known errors. |
|---|