Steiger Cougar III ST-280

The Steiger Cougar III ST-280 is a tractor produced by Steiger. It is equipped with a 893 ci 14.6 L engine. The listed engine power is Diesel (listed): 280 hp / 208.8 kW; Diesel (listed): 280 hp / 208.8 kW. Transmission: Dana-Spicer 1010. Operating weight: 25600 to 30500 pounds.

Overview

	1981 - 1983 III SeriesFour-wheel Drive (4WD) tractor III Series Four-wheel Drive (4WD) tractor

Production
Manufacturer	Steiger
Four-wheel Drive (4WD) tractor
Built in Fargo, North Dakota, USA
Original price was $89,000 in 1983

Steiger Cougar III ST-280 Transmission
20-speed
Transmission details ...

Steiger Cougar III ST-280 Power
Engine	280 hp 208.8 kW
Drawbar (tested)	249.69 hp 186.2 kW
Performance test details ...

Mechanical
Four-wheel drive
Final drives	outboard planetary
Articulated power steering
Hydraulic dry disc brakes
Safari Cab standard with heat and air-conditioning.

Hydraulics
Type	open center
Pressure	2250 psi 155.1 bar
Valves	3 to 5
Cat Pump flow	31.9 gpm 120.7 lpm
Cummins Pump flow	28.6 gpm 108.3 lpm

Tractor hitch
Rear Type	III OptOptional

Dimensions & Tires
Wheelbase	128 inches 325 cm
Weight	25600 to 30500 pounds
Front tire	18.4x38
Rear tire	18.4x38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	90
Battery volts	12

References
ST Tractors published in 1981, by Steiger
ST Tractors published in 1982, by Steiger

Engine

Engine options
Cummins 14.0L 6-cyl diesel
Caterpillar 14.6L 6-cyl diesel

Engine Detail — 855 ci / 14.0 L Diesel

Manufacturer	Cummins NT-855C
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled inline
Displacement	855 ci 14.0 L
Bore/Stroke	5.50x6.00 inches 140 x 152 mm
Power	280 hp 208.8 kW
Air cleaner	two paper elements
Compression	14.1:1
Rated RPM	2100
Torque	920 lb-ft 1247.5 Nm
Torque RPM	1400
Starter volts	12
Oil capacity	35 qts 33.1 L
Coolant capacity	61 qts 57.7 L

Engine Detail — 893 ci / 14.6 L Diesel

Manufacturer	Caterpillar 3406DIT
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled inline
Displacement	893 ci 14.6 L
Bore/Stroke	5.40x6.50 inches 137 x 165 mm
Power	280 hp 208.8 kW
Air cleaner	two paper elements
Rated RPM	2100
Torque	945 lb-ft 1281.4 Nm
Torque RPM	1200
Starter volts	12
Oil capacity	36 qts 34.1 L
Coolant capacity	70 qts 66.2 L

Transmission

Transmission — Dana-Spicer 1010

Transmission	Dana-Spicer 1010
Gears	20 forward and 4 reverse
Clutch	393.7mm hydraulic dry disc
Ten-speed transmission with two-speed transfer case.

Dimensions

Steiger Cougar III ST-280 Tires
Ag front	18.4x38
	20.8x34
	20.8x38
	23.1-34
	24.5x32
	30.5x32
Ag rear	18.4x38
	20.8x34
	20.8x38
	23.1-34
	24.5x32
	30.5x32

Dimensions
Wheelbase	128 inches 325 cm
Length	252 inches 640 cm
Width	96 inches (tractor body) 243 cm
Height (exhaust)	155.8 inches 395 cm

Steiger Cougar III ST-280 Weight
Cummins Shipping	25600 lbs 11612 kg
Cat Shipping	25900 lbs 11748 kg
Operating	30500 lbs 13834 kg
Max capacity	34000 lbs 15422 kg

Tests

Tractor Tests
NTTL 1401: Cummins diesel 20-speed 4WD
NTTL 1412: Cat diesel 20-speed 4WD

Nebraska Tractor Test 1401
Cummins diesel 20-speed 4WD August 27 - September 9, 1981 Link: Nebraska Tractor Test 1401 file
Drawbar performance
Max power	249.69 hp 186.2 kW
Gear 12 used for power test.
Max pull	31,517 lbs 14296 kg
Gear 1 used for pull test.

Nebraska Tractor Test 1412
Cat diesel 20-speed 4WD October 19 - 30, 1981 Link: Nebraska Tractor Test 1412 file
Drawbar performance
Max power	247.27 hp 184.4 kW
Fuel use	15.1 gal/hour 57.2 l/hour
Gear 10 used for power test.
Max pull	32,462 lbs 14724 kg
Gear 4 used for pull test.

Photos

Steiger Cougar ST-280.

Steiger Cougar ST-280.