Introduction
Fiat 780 Utility Tractor
The Fiat 780 is a utility tractor produced by Hesston, a division of Fiat, between 1981 and 1984. Positioned as a versatile machine for general agricultural operations, it combines a mid-range power output with various configuration options to suit different farming requirements.
Engine and Performance
The tractor is powered by the Fiat 8045 diesel engine, a 3.7-liter, 4-cylinder liquid-cooled unit. With a rated speed of 2500 RPM, it delivers approximately 77 horsepower. The engine features a 17:1 compression ratio and an electric starter system, providing reliable performance for heavy-duty field tasks.
Transmission and Drivetrain
The 780 offers multiple transmission configurations, including an 8-speed partially synchronized version, a 16-speed option, and an 8-speed mechanical shuttle. The partially synchronized gearbox provides eight forward and two reverse speeds, with synchronization on the 3rd and 4th gears in both high and low ranges. The tractor is available in both two-wheel and four-wheel drive configurations to accommodate various soil conditions.
Hydraulics and PTO
The hydraulic system utilizes an open-center design with a pump flow capacity of 11 gpm (41.6 lpm) and a system pressure of 2702 psi (186.3 bar). It includes two hydraulic valves for implement control. The rear Power Take-Off (PTO) is independent and operates at a standard 540 RPM, facilitating the use of various agricultural implements.
Operator Environment and Mechanicals
The machine features power steering and differential hydraulic wet disc brakes for improved control. Operator safety is provided by a standard ROPS (Roll-Over Protective Structure), with an optional Supercomfort cab available, which includes air conditioning and provisions for audio equipment such as radio or CB systems.
Conclusion
The Fiat 780 is a robust utility tractor designed for reliability and operational flexibility. Its range of transmission choices and available cab comfort options made it a practical solution for farmers during the early 1980s, offering a balance of power and maneuverability.
Production Information of Fiat-Hesston, 780
- Utility tractor
- Original price was $23,500 in 1984
| Manufacturer | Hesston (a part of Fiat) |
|---|
Dimension and Tires Information of Fiat-Hesston, 780
| Wheelbase | 89 inches [226 cm] |
|---|---|
| 2WD Length | 135 inches [342 cm] |
| 4WD Length | 144 inches [365 cm] |
| Ag front | 7.50-16 (2WD) |
|---|---|
| Ag front(optional) | 12.4-24 (4WD) |
| Ag rear | 18.4-30 |
Engine Specifications of Fiat-Hesston, 780
- Fiat 8045
- Liquid-cooled
- Diesel
- 4-cylinder
| Compression | 17:1 |
|---|---|
| Displacement | 224 ci [3.7 L] |
| Rated RPM | 2500 |
| Bore/Stroke | 4.03x4.33 inches [102 x 110 mm] |
| Starter volts | 12 |
| Starter | Electric |
Transmission Information of Fiat-Hesston, 780
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 |
Transmission variants 2
- Four gears with four ranges provides sixteen forward speeds.
| Gears | 16 forward and 4 reverse |
|---|
Transmission variants 3
| Type | Mechanical shuttle |
|---|---|
| Gears | 8 forward and reverse |
- 8-speed partially synchronized
- 16-speed
- 8-speed mechanical shuttle
Mechanical Specs of Fiat-Hesston, 780
- Two- or four-wheel drive
- ROPS standard, Supercomfort cab optional with air conditioning. Optional radio, cassette, and CB radio.
- Power steering
- Differential hydraulic wet disc brakes
Power Information of Fiat-Hesston, 780
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 |
Hydraulics Specifications of Fiat-Hesston, 780
| Type | Open center |
|---|---|
| Pump flow | 11 gpm [41.6 lpm] |
| Pressure | 2702 psi [186.3 bar] |
| Valves | 2 |
Three-Point Hitch of Fiat-Hesston, 780
| Rear Type | II |
|---|
Electrical System of Fiat-Hesston, 780
| Charging system | Alternator |
|---|---|
| Battery volts | 12 |
| Charging amps | 45 |
| Charging amps(optional) | 55 |
The 55A alternator was used on tractors with cab and air-conditioning.
Where it sits
With 77 hp[P] HP, the Fiat-Hesston 780 sits between 680 (68 HP) and 880-5 (88 HP) in Fiat-Hesston's range. Its power puts it in the 58th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the Fiat-Hesston 780 have?
The Fiat-Hesston 780 delivers 77 hp[P] HP.
What years was the Fiat-Hesston 780 produced?
The Fiat-Hesston 780 was produced in 1981-1984.
What engine does the Fiat-Hesston 780 have?
The Fiat-Hesston 780 is powered by a Diesel, 4-cylinder engine.
What transmission does the Fiat-Hesston 780 use?
The Fiat-Hesston 780 uses a Partially synchronized transmission.
Is the Fiat-Hesston 780 4WD?
The Fiat-Hesston 780 is available in 2WD/4WD.