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Tractor · 1985Unverified

Hesston 55-66

Name: Hesston 55-66
Brand: Hesston

Hesston 55-66 — 66 Series · 46 hp. Reference specifications; pending source verification.

The Hesston 55-66 is a tractor model rated at approximately 46 hp, positioning it at the lighter end of its class. It was in production from 1985 to 1989. The model features a 3-cylinder diesel liquid-cooled engine, coupled with four-wheel drive and a 12-speed gearbox. Its operating weight is specified as 4851 to 5402 pounds, suitable for areas up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

46 hp

Max power

28.6 kW

Weight

4851 to 5402 pounds

Catalogue coverage

Variants represented

Richest spec table

83 rows

Recorded power

46 hp

Transmissions

12-speed partially synchronized

Production years

1985-1989

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerHesston (a part of Fiat)Reference

Utility tractorReference

Original price was $17,400 in 1990Reference

Two- or four-wheel driveReference

Power steeringReference

Mechanical wet disc brakesReference

Four-post ROPS. Canopy optional.Reference

Variants

55-66utility 2WDReference

55-66DTutility 4WDReference

Engine

Fiat 2.7L 3-cyl dieselReference

Fuel tank72.7 LReference

Engine41.0 kWReference

Drawbar (claimed)28.3 kWReference

Drawbar (tested)28.6 kWReference

Fiat 8035.06Reference

dieselReference

3-cylinderReference

liquid-cooledReference

Displacement2.7 LReference

Bore/Stroke100 x 115 mmReference

Power41.0 kWReference

Compression17:1Reference

Rated RPM2500Reference

StarterelectricReference

Starter volts12Reference

Power at rated engine speed34.1 kWReference

Max power28.6 kWReference

Transmission

12-speed partially synchronizedReference

12-speed mechanical shuttleReference

20-speed creeperReference

Typepartially synchronizedReference

Gears12 forward and 4 reverseReference

Four gears (1-4) in three ranges (I-III). Shifts between gears are synchronized.Reference

Typemechanical shuttleReference

Gears12 forward and reverseReference

Four gears (1-4) in three ranges (I-III) with shuttle.Reference

TypecreeperReference

Gears20 forward and 8 reverseReference

Four gears (1-4) in three ranges (I-III) with normal and creeper ranges.Reference

PTO & Hydraulics

PTO (claimed)34.2 kWReference

PTO (tested)34.1 kWReference

Typeopen centerReference

Pressure186.2 barReference

Valves0 to 3Reference

Total flow41.6 lpmReference

Rear TypeI/IIReference

Controlposition and lower-link draft controlReference

Rear lift1778 kgReference

Rear PTOindependentReference

Rear PTO Type540/groundReference

Power at rated PTO speed33.4 kWReference

Dimensions

2WD Wheelbase217 cmReference

4WD Wheelbase211 cmReference

Weight4851 to 5402 poundsReference

Front tire6.50-16Reference

2WD Rear tire13.6-28Reference

2WD Standard tires (ag)Front: 6.50-16. Rear: 13.6-28Reference

4WD Standard tires (ag)Front: 9.5-24. Rear: 16.9-28Reference

2WD Length330 cmReference

4WD Length337 cmReference

2WD Clearance (front axle)46 cmReference

4WD Clearance (front axle)36 cmReference

2WD Front tread139 to 189 cmReference

4WD Front tread144 to 187 cmReference

Rear tread132 to 192 cmReference

2WD Shipping2200 kgReference

4WD Shipping2450 kgReference

2WD Operating2399 kgReference

Ballasted2980 kgReference

Steering wheel161 cmReference

Hesston 55-66 attachments

front-end loaderReference

Electrical

Charging systemalternatorReference

Charging amps33Reference

Battery volts12Reference

Hesston 55-66 Height

Hood143 cmReference

2WD ROPS234 cmReference

4WD ROPS241 cmReference

Test results

Diesel 12-speed 2WDApril 15 - 29, 1985Link: Nebraska Tractor Test 1560 fileReference

PTO performanceReference

Fuel use11.4 l/hourReference

Fuel use10.2 l/hourReference

Drawbar performanceReference

Speeds

With 16.9-28 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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