Hesston 780

The Hesston 780 is a tractor produced by Hesston. It is equipped with a 224 ci 3.7 L engine. The rated power output is 70.57 hp 52.6 kW. Transmission: 8 forward and reverse. Operating weight: 5495 to 6200 pounds.

Overview

	1981 - 1984 80 SeriesUtility tractor
1981 - 1984
80 Series
Utility tractor

Production
Manufacturer	Hesston (a part of Fiat)
Utility tractor
Original price was $23,500 in 1984

Variants
780	2WD
780DT	4WD

Hesston 780 Engine
Fiat 3.7L 4-cyl diesel
Fuel tank	21.1 gal 79.9 L
Engine details ...

Hesston 780 Power
PTO (claimed)	70 hp 52.2 kW
Drawbar (tested)	62.88 hp 46.9 kW
PTO (tested)	70.57 hp 52.6 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Power steering
Differential hydraulic wet disc brakes
ROPS standard, Supercomfort cab optional with air conditioning. Optional radio, cassette, and CB radio.

Hydraulics
Type	open center
Pressure	2702 psi 186.3 bar
Valves	2
Pump flow	11 gpm 41.6 lpm

Tractor hitch
Rear Type	II

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540

Dimensions & Tires
Wheelbase	89 inches 226 cm
Weight	5495 to 6200 pounds
Front tire	7.50-16
Rear tire	18.4-30
Full dimensions and tires ...

Electrical
Charging system	alternator
Charging amps	45
	55 *The 55A alternator was used on tractors with cab and air-conditioning.
Battery volts	12

References
80 Series Tractors - 50-90 PTO HP published in 1981, by Hesston

Engine

Engine Detail — 224 ci / 3.7 L Diesel

Manufacturer	Fiat 8045
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	224 ci 3.7 L
Bore/Stroke	4.03x4.33 inches 102 x 110 mm
Compression	17:1
Rated RPM	2500
Starter	electric
Starter volts	12

Transmission

Transmission options
8-speed partially synchronized
16-speed
8-speed mechanical shuttle

Transmission — 8 forward and 2 reverse partially synchronized

Type	partially synchronized
Gears	8 forward and 2 reverse
Four gears with high and low ranges provide eight forward speeds. Gears 3/4 are synchronized in both ranges.
With 18.4-30 rear tires.

Transmission — 16 forward and 4 reverse

Gears	16 forward and 4 reverse
Four gears with four ranges provides sixteen forward speeds.
With 18.4-30 rear tires.

Transmission — 8 forward and reverse mechanical shuttle

Type	mechanical shuttle
Gears	8 forward and reverse
With 18.4-30 rear tires.

Dimensions

Hesston 780 Tires
Ag front	7.50-16 (2WD)
	12.4-24 (4WD)
Ag rear	18.4-30

Dimensions
Wheelbase	89 inches 226 cm
2WD Length	135 inches 342 cm
4WD Length	144 inches 365 cm

Hesston 780 Weight
2WD Operating	5495 lbs 2492 kg
4WD Operating	6200 lbs 2812 kg
Ballasted	10100 lbs 4581 kg

Hesston 780 Height
2WD Hood	59.5 inches 151 cm
4WD Hood	60 inches 152 cm
ROPS	102.5 inches 260 cm
Cab	103.5 inches 262 cm

Tests

Tractor Tests
NTTL 1294: diesel 16-speed 2WD
NTTL 1386: diesel 8-speed 4WD

Nebraska Tractor Test 1294
Diesel 16-speed 2WD October 19 - November 1, 1978 Link: Nebraska Tractor Test 1294 file
PTO performance
Power at rated engine speed	70.36 hp 52.5 kW
Fuel use	4.7 gal/hour 17.8 l/hour
Power at rated PTO speed	66.30 hp 49.4 kW
Fuel use	4.3 gal/hour 16.3 l/hour
Drawbar performance
Max power	62.88 hp 46.9 kW
Fuel use	4.5 gal/hour 17.0 l/hour
Gear 4N used for power test.

Nebraska Tractor Test 1386
Diesel 8-speed 4WD April 21 - 29, 1981 Link: Nebraska Tractor Test 1386 file
PTO performance
Power at rated engine speed	70.57 hp 52.6 kW
Fuel use	4.4 gal/hour 16.7 l/hour
Power at rated PTO speed	66.67 hp 49.7 kW
Fuel use	4.0 gal/hour 15.1 l/hour
Drawbar performance
Max power	59.97 hp 44.7 kW
Fuel use	4.4 gal/hour 16.7 l/hour

Attachments

Attachment overview
Hesston L340 loader
Hesston L340H loader