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Tractor · 1981Unverified

Steiger Cougar III ST-280

Name: Steiger Cougar III ST-280
Brand: Steiger

Steiger Cougar III ST-280 — III Series · 280 hp. Reference specifications; pending source verification.

The Steiger Cougar III ST-280 is a tractor model rated at approximately 280 horsepower, placing it at the higher end of its class in terms of power output. It was manufactured between 1981 and 1983. The tractor features a 6-cylinder turbocharged diesel liquid-cooled engine and four-wheel drive, paired with a 20-speed gearbox. Its operating weight ranges from 11,439 to 13,809 kilograms, making it suitable for operations covering 1,500+ acres.

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

Rated power

280 hp

Max power

186.2 kW

Weight

25600 to 30500 pounds

Catalogue coverage

Variants represented

Richest spec table

95 rows

Recorded power

280 hp

Transmissions

20-speed

Production years

1981-1983

Verified variants

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

Hover a source tag to verify

Overview

ManufacturerSteigerReference

Four-wheel Drive (4WD) tractorReference

Built in Fargo, North Dakota, USAReference

Original price was $89,000 in 1983Reference

Four-wheel driveReference

Final drivesoutboard planetaryReference

Articulated power steeringReference

Hydraulic dry disc brakesReference

Safari Cab standard with heat and air-conditioning.Reference

Engine

Cummins 14.0L 6-cyl dieselReference

Caterpillar 14.6L 6-cyl dieselReference

Fuel tank1010.6 LReference

Engine208.8 kWReference

Drawbar (tested)186.2 kWReference

Cummins NT-855CReference

turbocharged dieselReference

6-cylinderReference

liquid-cooled inlineReference

Displacement14.0 LReference

Bore/Stroke140 x 152 mmReference

Power208.8 kWReference

Air cleanertwo paper elementsReference

Compression14.1:1Reference

Rated RPM2100Reference

Torque1247.5 NmReference

Torque RPM1400Reference

Starter volts12Reference

Oil capacity33.1 LReference

Coolant capacity57.7 LReference

Caterpillar 3406DITReference

Displacement14.6 LReference

Bore/Stroke137 x 165 mmReference

Torque1281.4 NmReference

Torque RPM1200Reference

Oil capacity34.1 LReference

Coolant capacity66.2 LReference

Max power186.2 kWReference

Max power184.4 kWReference

Transmission

20-speedReference

TransmissionDana-Spicer 1010Reference

Gears20 forward and 4 reverseReference

Clutch393.7mm hydraulic dry discReference

Ten-speed transmission with two-speed transfer case.Reference

PTO & Hydraulics

Typeopen centerReference

Pressure155.1 barReference

Valves3 to 5Reference

Cat Pump flow120.7 lpmReference

Cummins Pump flow108.3 lpmReference

Rear TypeIIIReference

Dimensions

Wheelbase325 cmReference

Weight25600 to 30500 poundsReference

Front tire18.4x38Reference

Rear tire18.4x38Reference

Ag front18.4x38Reference

Ag front20.8x34Reference

Ag front20.8x38Reference

Ag front23.1-34Reference

Ag front24.5x32Reference

Ag front30.5x32Reference

Ag rear18.4x38Reference

Ag rear20.8x34Reference

Ag rear20.8x38Reference

Ag rear23.1-34Reference

Ag rear24.5x32Reference

Ag rear30.5x32Reference

Length640 cmReference

Width243 cmReference

Height (exhaust)395 cmReference

Cummins Shipping11612 kgReference

Cat Shipping11748 kgReference

Operating13834 kgReference

Cougar III ST-280 Serial Numbers

1981110-00001Reference

1982110-01501Reference

1983110-02501Reference

1981111-00001Reference

1982111-01501Reference

1983111-02501Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps90Reference

Battery volts12Reference

Capacities

Max capacity15422 kgReference

Test results

NTTL 1401: Cummins diesel 20-speed 4WDReference

NTTL 1412: Cat diesel 20-speed 4WDReference

Cummins diesel 20-speed 4WDAugust 27 - September 9, 1981Link: Nebraska Tractor Test 1401 fileReference

Drawbar performanceReference

Gear 12 used for power test.Reference

Max pull14296 kgReference

Gear 1 used for pull test.Reference

Cat diesel 20-speed 4WDOctober 19 - 30, 1981Link: Nebraska Tractor Test 1412 fileReference

Fuel use57.2 l/hourReference

Gear 10 used for power test.Reference

Max pull14724 kgReference

Gear 4 used for pull test.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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