Hesston 70-90

The Hesston 70-90 is a tractor produced by Hesston. It is equipped with a 220.5 ci 3.6 L engine. The rated power output is 70 hp 52.2 kW. Transmission: 20 forward and 8 reverse. Operating weight: 6798 to 7436 pounds.

Overview

	1985 90 SeriesUtility tractorFiat built
1985
90 Series
Utility tractor
Fiat built

1985
90 Series
Utility tractor
Fiat built

Production
Distributor	Hesston
Manufacturer	Fiat
Utility tractor
Original price was $31,100 in 1985

Variants
70-90DT	4WD

Hesston 70-90 Engine
Fiat 3.6L 4-cyl diesel
Fuel tank	21.1 gal 79.9 L
Engine details ...

Hesston 70-90 Power
Engine	70 hp 52.2 kW
PTO (claimed)	62 hp 46.2 kW
Drawbar (tested)	53.92 hp 40.2 kW
PTO (tested)	62.25 hp 46.4 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Final drives	planetary
Differential lock	mechanical rear
Power steering
Differential hydraulic wet disc brakes
Four-post ROPS. Cab optional.

Hydraulics
Type	open center
Pressure	2702 psi 186.3 bar
Rear valves	2 or 3
Pump flow	11 gpm 41.6 lpm

Tractor hitch
Rear Type	II
Rear lift	5212 lbs 2364 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540 (1.375)
Engine RPM	540@2198

Dimensions & Tires
2WD Wheelbase	89.25 inches 226 cm
4WD Wheelbase	89.5 inches 227 cm
Weight	6798 to 7436 pounds
Front tire	7.50-16
Rear tire	16.9-30
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	65
Battery volts	12

References
90 Series Tractors published in 1984, by Hesston

Engine

	1985 90 SeriesUtility tractorFiat built
1985
90 Series
Utility tractor
Fiat built

1985
90 Series
Utility tractor
Fiat built

Engine Detail — 220.5 ci / 3.6 L Diesel

Manufacturer	Fiat 8045.06
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	220.5 ci 3.6 L
Bore/Stroke	3.937x4.527 inches 100 x 115 mm
Power	70 hp 52.2 kW
Fuel system	direct injection
Pre-heating	ether injection
Compression	17:1
Rated RPM	2500
Starter	electric
Starter volts	12

Transmission

	1985 90 SeriesUtility tractorFiat built
1985
90 Series
Utility tractor
Fiat built

1985
90 Series
Utility tractor
Fiat built

Transmission options
12-speed synchromesh
12-speed mechanical shuttle
20-speed creeper

Transmission — 12 forward and 4 reverse synchromesh

Type	synchromesh
Gears	12 forward and 4 reverse
Clutch	279.4mm dry disc
Four gears (1-4) in three ranges (I-III) plus reverse range.

Transmission — 12 forward and reverse mechanical shuttle

Type	mechanical shuttle
Gears	12 forward and reverse
With 18.4-30 rear tires.
Transmission
Type	creeper
Gears	20 forward and 8 reverse

Dimensions

	1985 90 SeriesUtility tractorFiat built
1985
90 Series
Utility tractor
Fiat built

1985
90 Series
Utility tractor
Fiat built

Hesston 70-90 Tires
2WD Ag front	7.50-16
4WD Ag front	11.2-24
Ag rear	16.9-30
2WD Ag front	7.50-18
2WD Ag front	9.5L-15
4WD Ag front	13.6-24
4WD Ag front	12.4-24
Ag rear	18.4-30
	13.6-38
	16.9-30

Dimensions
2WD Wheelbase	89.25 inches 226 cm
4WD Wheelbase	89.5 inches 227 cm
2WD Length	135.25 inches 343 cm
4WD Length	140.5 inches 356 cm
2WD Front tread	55.5 to 75.25 inches 140 to 191 cm
4WD Front tread	64.1 to 77 inches 162 to 195 cm
Rear tread	55.1 to 78.75 inches 139 to 200 cm

Hesston 70-90 Weight
2WD	6798 lbs 3083 kg
4WD	7436 lbs 3372 kg
Operating	7,100 lbs (2WD) 3220 kg
Ballasted	7,775 lbs 3526 kg

Hesston 70-90 Height
2WD Hood	58.25 inches 147 cm
4WD Hood	64.5 inches 163 cm
ROPS	101.25 inches 257 cm
Cab	99.5 inches 252 cm

Tests

	1985 90 SeriesUtility tractorFiat built
1985
90 Series
Utility tractor
Fiat built

1985
90 Series
Utility tractor
Fiat built

Nebraska Tractor Test 1562
Diesel 12-speed 2WD April 22 - May 9, 1985 Link: Nebraska Tractor Test 1562 file
PTO performance
Power at rated engine speed	62.25 hp 46.4 kW
Fuel use	3.9 gal/hour 14.8 l/hour
Power at rated PTO speed	61.94 hp 46.2 kW
Fuel use	3.7 gal/hour 14.0 l/hour
Drawbar performance
Max power	53.92 hp 40.2 kW
Fuel use	3.8 gal/hour 14.4 l/hour
Max pull	6238 lbs 2829 kg