Introduction
Fiat 55-46 Utility Tractor
The Fiat 55-46 is a utility tractor produced between 1984 and 1989, belonging to the 65-46 series. Designed for general agricultural tasks, it features a 3-cylinder, liquid-cooled diesel engine and is available in both two-wheel and four-wheel drive configurations.
Engine and Performance
The tractor is powered by the Fiat 8035.06 diesel engine, a 2.7-liter 3-cylinder unit with a 17:1 compression ratio. It delivers 54.2 hp (40.4 kW) at a rated speed of 2500 RPM. The engine uses a 12-volt electric starter and a liquid cooling system to maintain optimal thermal stability during operation.
Transmission and Drivetrain
The standard transmission is a partially synchronized gearbox offering 8 forward and 2 reverse speeds, with gears 3 and 4 synchronized across two ranges. An optional creeper transmission configuration is available, extending the range to 12 forward and 3 reverse speeds for applications requiring precise, low-speed movement. A 279.4mm dry disc clutch manages power delivery.
Hydraulics and PTO
The hydraulic system utilizes an open-center design with a pump flow of 7 gpm (26.5 lpm) at a system pressure of 2756 psi (190.0 bar). The rear hitch is a Category II/I type, capable of lifting 4233 lbs (1920 kg) at the ends. The independent rear PTO operates at 540 RPM, engaged at an engine speed of 2160 RPM.
Operator Environment and Mechanical Features
The 55-46 is equipped with power steering and mechanical band brakes for maneuverability and stopping power. Safety features include a four-post ROPS (Roll-Over Protective Structure), with an optional enclosed cab featuring a heating system for operator comfort in varying climate conditions.
Conclusion
The Fiat 55-46 is a functional utility tractor suited for small to medium-sized agricultural operations. Its combination of a 54 hp engine, flexible transmission options, and substantial lift capacity makes it a versatile machine for standard field work and implement management.
Production Information of Fiat, 55-46
- Utility tractor
| Manufacturer | Fiat |
|---|
Dimension and Tires Information of Fiat, 55-46
| 2WD Wheelbase | 80.8 inches [205 cm] |
|---|---|
| 2WD Ground clearance | 19.5 inches [49 cm] |
| 4WD Length | 128.9 inches [327 cm] |
| 4WD Wheelbase | 79.2 inches [201 cm] |
| 4WD Ground clearance | 12.6 inches [32 cm] |
| 2WD Length | 126 inches [320 cm] |
| 4WD Optional tires (ag) | Front: 8.3/8-24. Rear: 12.4/11-32 |
|---|---|
| 2WD Standard tires (ag) | Front: 6.00-16. Rear: 14.9/13-28 |
| 2WD Optional tires (ag) | Front: 7.50-16. Rear: 12.4/11-32 |
| 2WD Optional tires (ag) | Front: 6.00-16. Rear: 12.4/11-32 |
| 4WD Standard tires (ag) | Front: 11.2/10-20. Rear: 14.9/13-28 |
| 4WD Optional tires (ag) | Front: 9.5/9-20. Rear: 13.6/12-28 |
| 4WD Optional tires (ag) | Front: 8.00-20. Rear: 13.6/12-28 |
| 2WD Optional tires (ag) | Front: 6.00-16. Rear: 13.6/12-28 |
| 4WD Optional tires (ag) | Front: 11.2/10-20. Rear: 12.4/11-32 |
| 4WD Optional tires (ag) | Front: 11.2/10-20. Rear: 14.9/13-28 |
Engine Specifications of Fiat, 55-46
- Fiat 8035.06
- Liquid-cooled
- Diesel
- 3-cylinder
| Starter | Electric |
|---|---|
| Displacement | 165 ci [2.7 L] |
| Compression | 17:1 |
| Bore/Stroke | 3.937x4.528 inches [100 x 115 mm] |
| Starter volts | 12 |
| Firing order | 1-2-3 |
| Rated RPM | 2500 |
| Power | 54.2 hp [40.4 kW] |
Transmission Information of Fiat, 55-46
Transmission variants 1
- Four gears with high and low ranges provide eight forward speeds. Gears 3/4 are synchronized in both ranges.
| Type | Partially synchronized |
|---|---|
| Gears | 8 forward and 2 reverse |
| Clutch | 279.4mm dry disc |
Transmission variants 2
| Type | Creeper |
|---|---|
| Gears | 12 forward and 3 reverse |
- 8-speed partially synchronized
- 12-speed creeper
Mechanical Specs of Fiat, 55-46
- Two- or four-wheel drive
- Four-post ROPS. Cab available with heater.
- Power steering
- Mechanical band brakes
Power Information of Fiat, 55-46
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 (1.375) |
| Engine RPM | 540@2160 |
Hydraulics Specifications of Fiat, 55-46
| Type | Open center |
|---|---|
| Pump flow | 7 gpm [26.5 lpm] |
| Pressure | 2756 psi [190.0 bar] |
| Valves | 0 to 2 |
Three-Point Hitch of Fiat, 55-46
| Rear Type | II/I |
|---|---|
| Rear lift (at ends) | 4233 lbs [1920 kg] |
| Rear lift (at 24"/610mm) | 3483 lbs [1579 kg] |
Electrical System of Fiat, 55-46
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 33 |
Where it sits
With 54 HP, the Fiat 55-46 sits just below 65-46 (65 HP) in Fiat's range. Its power puts it in the 37th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the Fiat 55-46 have?
The Fiat 55-46 delivers 54 HP.
What years was the Fiat 55-46 produced?
The Fiat 55-46 was produced in 1984-1989.
What engine does the Fiat 55-46 have?
The Fiat 55-46 is powered by a Diesel, 3-cylinder engine.
What transmission does the Fiat 55-46 use?
The Fiat 55-46 uses a Partially synchronized transmission.
Is the Fiat 55-46 4WD?
The Fiat 55-46 is available in 2WD/4WD.