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Hesston 70-90

Hesston 70-90 tractor
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The Hesston 70-90 is a utility tractor built by Fiat and distributed by Hesston in 1985. It is part of the 90 Series and features a Fiat 3.6L 4-cylinder diesel engine producing 70 hp. The tractor offers multiple transmission options including 12-speed synchromesh, 12-speed mechanical shuttle, and 20-speed creeper. It has two- or four-wheel drive with planetary final drives and mechanical rear differential lock. The tractor includes power steering, hydraulic wet disc brakes, and a four-post ROPS with an optional cab. Hydraulics are open center with 2702 psi pressure and 11 gpm pump flow. The rear hitch is category II with a lift capacity of 5212 lbs. The PTO is independent with a 540 rpm rear PTO shaft. Dimensions vary between 2WD and 4WD models, with wheelbases around 89 inches and weights from 6798 to 7436 lbs. Tires and other specifications vary to suit different agricultural needs.
Hesston 70-90Fiat 70-90utility tractor70 hp tractor1985 Hesston tractorHesston 90 Seriesfarm tractor specifications
Power70 hp
Founded1985
Model70-90

Technical Specifications

Detailed specifications and technical data for Hesston 70-90

Power

Engine:70 hp (52.2 kW)
PTO (tested):62.25 hp (46.4 kW)
PTO (claimed):62 hp (46.2 kW)
Drawbar (tested):53.92 hp (40.2 kW)

Tires

Ag rear:16.9-30, 18.4-30, 13.6-38, 16.9-30
2WD Ag front:7.50-16, 7.50-18, 9.5L-15
4WD Ag front:11.2-24, 13.6-24, 12.4-24

Engine

Type:diesel
Model:Fiat 8045.06
Power:70 hp (52.2 kW)
Cooling:liquid-cooled
Starter:electric
Cylinders:4-cylinder
Fuel tank:21.1 gal (79.9 L)
Rated RPM:2500
Bore/Stroke:3.937x4.527 inches (100 x 115 mm)
Compression:17:1
Fuel system:direct injection
Pre-heating:ether injection
Displacement:220.5 ci (3.6 L)
Starter volts:12

Height

Cab:99.5 inches (252 cm)
ROPS:101.25 inches (257 cm)
2WD Hood:58.25 inches (147 cm)
4WD Hood:64.5 inches (163 cm)

Weight

2WD:6798 lbs (3083 kg)
4WD:7436 lbs (3372 kg)
Ballasted:7,775 lbs (3526 kg)
Operating:7,100 lbs (2WD) (3220 kg)

Variants

70-90DT:4WD

Dimensions

2WD Length:135.25 inches (343 cm)
4WD Length:140.5 inches (356 cm)
Rear tread:55.1 to 78.75 inches (139 to 200 cm)
2WD Wheelbase:89.25 inches (226 cm)
4WD Wheelbase:89.5 inches (227 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)

Electrical

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

Hydraulics

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

Mechanical

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

Production

Type:Utility tractor
Distributor:Hesston
Manufacturer:Fiat
Original price:$31,100 in 1985

Transmission

Options:12-speed synchromesh, 12-speed mechanical shuttle, 20-speed creeper
Creeper Type:creeper
Creeper Gears:20 forward and 8 reverse
Synchromesh Type:synchromesh
Synchromesh Gears:12 forward and 4 reverse
Synchromesh Clutch:279.4mm dry disc
Mechanical shuttle Type:mechanical shuttle
Mechanical shuttle Gears:12 forward and reverse

Tractor hitch

Rear Type:II
Rear lift:5212 lbs (2364 kg)

Power Take-off (PTO)

Rear PTO:independent
Engine RPM:540@2198
Rear PTO Type:540 (1.375)

Related Models

Hesston 60-90

Model:60-90

Hesston 80-90

Model:80-90