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Tractor · 1976Unverified

Steiger Cougar III ST-250

Name: Steiger Cougar III ST-250
Brand: Steiger

Steiger Cougar III ST-250 — III Series · 250 hp. Reference specifications; pending source verification.

The Steiger Cougar III ST-250 is a tractor model with a rated power output of 250 hp, categorising it among the more powerful machines within its class. Production of this model took place from 1976 to 1983. It features a 6-cylinder turbocharged diesel liquid-cooled engine, driving through four-wheel drive via a 10-speed gearbox. The tractor's listed weight is 11340 kg, and it is suited to tasks covering areas of approximately 1,500+ acres.

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

Rated power

250 hp

Max power

150.6 kW

Weight

11340 kg

Catalogue coverage

Variants represented

Richest spec table

72 rows

Recorded power

250 hp

Recorded weight

11340 kg

Transmissions

10-speed

Production years

1976-1983

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 $50,000 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

Caterpillar 10.5L 6-cyl dieselReference

Fuel tank1010.6 LReference

Engine186.4 kWReference

Drawbar (claimed)156.6 kWReference

Drawbar (tested)160.0 kWReference

Caterpillar 3306DITAReference

turbocharged aftercooled dieselReference

6-cylinderReference

liquid-cooled inlineReference

Displacement10.5 LReference

Bore/Stroke121 x 152 mmReference

Power186.4 kWReference

Air cleanertwo paper elementsReference

Compression15:1Reference

Rated RPM2100Reference

Torque1166.2 NmReference

Torque RPM1300Reference

StarterelectricReference

Starter volts12Reference

Oil capacity27.4 LReference

Coolant capacity53.0 LReference

Max power150.6 kWReference

Max power160.0 kWReference

Transmission

10-speedReference

20-speedReference

Gears10 forward and 2 reverseReference

TransmissionDana-Spicer 1010-2AReference

Gears20 forward and 4 reverseReference

Clutch355.6mm hydraulic dry discReference

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

PTO & Hydraulics

Typeopen centerReference

Pressure155.1 barReference

Valves3 to 5Reference

Pump flow116.6 lpmReference

Rear TypeIIIReference

Dimensions

Wheelbase325 cmReference

Weight11340 kgReference

Front tire23.1-34Reference

Rear tire23.1-34Reference

Ag front23.1-34Reference

Ag rear23.1-34Reference

Length640 cmReference

Width243 cmReference

Height (exhaust)395 cmReference

Shipping weight11340 kgReference

Max weight15422 kgReference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps90Reference

Battery volts12Reference

Test results

NTTL 1239: 2200rpm diesel 10-speed 4WDReference

NTTL 1452: 2100rpm diesel 20-speed 4WDReference

2200rpm diesel 10-speed 4WDApril 21 - May 2, 1977Link: Nebraska Tractor Test 1239 fileReference

Drawbar performanceReference

Fuel use60.2 l/hourReference

Gear 6 used for power test.Reference

Max pull12071 kgReference

Gear 2 used for pull test.Reference

2100rpm diesel 20-speed 4WD9/21/1982Link: Nebraska Tractor Test 1452 fileReference

Fuel use50.7 l/hourReference

Gear 11 used for power test.Reference

Max pull13398 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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