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Tractor · 1977Unverified

Steiger Cougar III ST-270

Name: Steiger Cougar III ST-270
Brand: Steiger

Steiger Cougar III ST-270 — III Series · 270 hp. Reference specifications; pending source verification.

The Steiger Cougar III ST-270 is a tractor model with a rated power output of 270 hp, positioning it within the higher-powered category of its class. Manufactured between 1977 and 1981, this model features a 6-cylinder turbocharged diesel liquid-cooled engine, which transmits power to four-wheel drive through a 10-speed gearbox. The listed weight of the Steiger Cougar III ST-270 is 11,907 kg, with an intended application for tasks covering approximately 1,500+ acres.

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

Rated power

270 hp

Max power

163.1 kW

Weight

11907 kg

Catalogue coverage

Variants represented

Richest spec table

92 rows

Recorded power

270 hp

Recorded weight

11907 kg

Transmissions

10-speed

Production years

1977-1981

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 $78,000 in 1981Reference

Four-wheel driveReference

Final drivesoutboard planetaryReference

Articulated power steeringReference

Hydraulic disc brakesReference

Safari Cab standard with heat and air-conditioning.Reference

Engine

Caterpillar 10.5L 6-cyl dieselReference

Fuel tank1010.6 LReference

Engine201.3 kWReference

Drawbar (tested)163.1 kWReference

Caterpillar 3306Reference

turbocharged aftercooled dieselReference

6-cylinderReference

liquid-cooledReference

Displacement10.5 LReference

Bore/Stroke121 x 152 mmReference

Power201.3 kWReference

Compression17.5:1Reference

Rated RPM2200Reference

Idle RPM830-2470Reference

Torque1050.9 NmReference

Torque RPM1400Reference

StarterelectricReference

Starter volts12Reference

Oil capacity27.4 LReference

Coolant capacity53.0 LReference

Max power163.1 kWReference

Transmission

10-speedReference

20-speedReference

Gears10 forward and 2 reverseReference

Clutchhydraulic dry discsReference

TransmissionDana-Spicer 1010-3BReference

Gears20 forward and 4 reverseReference

Clutch356mm dry discReference

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

PTO & Hydraulics

Typeopen centerReference

Pressure155.1 barReference

Valves4Reference

Pump flow110.5 lpmReference

Rear TypeIIIReference

Dimensions

Wheelbase325 cmReference

Weight11907 kgReference

Front tire20.8-38Reference

Rear tire20.8-38Reference

Ag front20.8-38Reference

Ag rear20.8-38Reference

Ag front18.4-30Reference

Ag front18.4-34Reference

Ag front18.4-38Reference

Ag front20.8-34Reference

Ag front23.1-30Reference

Ag front23.1-34Reference

Ag front24.5-32Reference

Ag front30.5-32Reference

Ag rear18.4-30Reference

Ag rear18.4-34Reference

Ag rear18.4-38Reference

Ag rear20.8-34Reference

Ag rear23.1-30Reference

Ag rear23.1-34Reference

Ag rear24.5-32Reference

Ag rear30.5-32Reference

Length640 cmReference

Width243 cmReference

Height (exhaust)395 cmReference

Shipping weight11907 kgReference

Max weight15422 kgReference

Clearance (rear axle)50 cmReference

Front axleRaba 598Reference

Raba 598 rear axleReference

Cougar III ST-270 Serial Numbers

1977105-00330Reference

1978105-00477Reference

1979105-00658Reference

1980105-00872Reference

1981105-0100Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps90Reference

Batteries2Reference

Battery volts12Reference

Battery AH208Reference

Battery Group8DReference

Test results

Diesel 10-speed 4WDApril 18 - May 2, 1977Link: Nebraska Tractor Test 1238 fileReference

Drawbar performanceReference

Fuel use62.1 l/hourReference

Gear 6 used for power test.Reference

Max pull11508 kgReference

Gear 3 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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