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Hesston 55-66

Hesston 55-66 tractor
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The Hesston 55-66 is a utility tractor produced from 1985 to 1989 as part of the 66 Series by Hesston, a part of Fiat. It features a Fiat 2.7L 3-cylinder liquid-cooled diesel engine producing 55 hp, with a fuel tank capacity of 19.2 gallons. Transmission options include 12-speed partially synchronized, 12-speed mechanical shuttle, and 20-speed creeper. The tractor offers two- or four-wheel drive, power steering, mechanical wet disc brakes, and a four-post ROPS with optional canopy. Hydraulics are open center type with up to 2700 psi pressure and up to 3 valves. The rear hitch is category I/II with position and lower-link draft control and a rear lift capacity of 3920 lbs. The PTO is independent with 540/ground speeds. Dimensions vary between 2WD and 4WD models, with wheelbases of 85.6 and 83.4 inches respectively, and weights ranging from 4851 to 5402 lbs shipping weight. Standard tires differ for 2WD and 4WD configurations. Electrical system includes a 12-volt battery and 33 amp alternator. The tractor can be equipped with an L330 front-end loader. Related model includes the Hesston 60-66.
Hesston 55-66Hesston tractor55-66 specificationsutility tractorFiat engine2WD tractor4WD tractortractor attachmentstractor hydraulics
Power55 hp
Founded1985 - 1989
Model55-66

Technical Specifications

Detailed specifications and technical data for Hesston 55-66

Power

Engine power:55 hp (41.0 kW)
PTO (tested):45.78 hp (34.1 kW)
PTO (claimed):45.8 hp (34.2 kW)
Drawbar (tested):38.39 hp (28.6 kW)
Drawbar (claimed):38 hp (28.3 kW)

Engine

Type:diesel
Model:Fiat 8035.06
Power:55 hp (41.0 kW)
Cooling:liquid-cooled
Starter:electric
Cylinders:3-cylinder
Fuel tank:19.2 gal (72.7 L)
Rated RPM:2500
Bore/Stroke:3.937x4.528 inches (100 x 115 mm)
Displacement:165 ci (2.7 L)
Starter volts:12
Compression ratio:17:1

Variants

55-66:utility 2WD
55-66DT:utility 4WD

Electrical

Battery volts:12
Charging amps:33
Charging system:alternator

Hydraulics

Type:open center
Valves:0 to 3
Pressure:2700 psi (186.2 bar)
Total flow:11 gpm (41.6 lpm)

Mechanical

ROPS:Four-post ROPS. Canopy optional.
Drive:Two- or four-wheel drive
Brakes:Mechanical wet disc brakes
Steering:Power steering

Production

Type:Utility tractor
Series:66 Series
Years made:1985 - 1989
Original price:$17,400 in 1990

Attachments

Loader:L330 Loader

Transmission

Creeper:20 forward and 8 reverse gears; Four gears (1-4) in three ranges (I-III) with normal and creeper ranges.
Options:12-speed partially synchronized, 12-speed mechanical shuttle, 20-speed creeper
Mechanical shuttle:12 forward and reverse gears; Four gears (1-4) in three ranges (I-III) with shuttle.
Partially synchronized:12 forward and 4 reverse gears; Four gears (1-4) in three ranges (I-III). Shifts between gears are synchronized.

Tractor hitch

Control:position and lower-link draft control
Rear Type:I/II
Rear lift capacity:3920 lbs (1778 kg)

Dimensions & Tires

Weight:4851 to 5402 pounds
2WD Length:130 inches (330 cm)
4WD Length:133 inches (337 cm)
Rear tread:52.1 to 75.75 inches (132 to 192 cm)
Hood height:56.5 inches (143 cm)
2WD Wheelbase:85.6 inches (217 cm)
4WD Wheelbase:83.4 inches (211 cm)
2WD Front tread:55.1 to 74.75 inches (139 to 189 cm)
2WD ROPS height:92.5 inches (234 cm)
4WD Front tread:56.9 to 73.75 inches (144 to 187 cm)
4WD ROPS height:95 inches (241 cm)
Ballasted weight:6570 lbs (2980 kg)
2WD Shipping weight:4851 lbs (2200 kg)
4WD Shipping weight:5402 lbs (2450 kg)
2WD Operating weight:5290 lbs (2399 kg)
Steering wheel height:63.5 inches (161 cm)
2WD Standard tires (ag):Front: 6.50-16. Rear: 13.6-28
4WD Standard tires (ag):Front: 9.5-24. Rear: 16.9-28
2WD Clearance (front axle):18.5 inches (46 cm)
4WD Clearance (front axle):14.5 inches (36 cm)

Power Take-off (PTO)

Rear PTO:independent
Rear PTO Type:540/ground

Related Models

Hesston 60-66

Model:60-66