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Steiger Cougar III ST-250 Specs ( 1976-1983 )

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Production

Description Built in Fargo, North Dakota, USA / Original price was $50,000 in 1983
Drive type Four-wheel Drive (4WD) tractor
Manufacturer Steiger

Engine

Engine type Caterpillar 10.5L 6-cyl diesel
Fuel tank 267 gal (1010.6 L)
Air cleaner two paper elements
Bore/Stroke 4.75x6.00 inches (121 x 152 mm)
Compression 15:1
Coolant capacity 56 qts (53.0 L)
Description Caterpillar 3306DITA / turbocharged aftercooled diesel / 6-cylinder / liquid-cooled inline
Displacement 638 ci (10.5 L)
Oil capacity 29 qts (27.4 L)
Power 250 hp (186.4 kW)
Rated RPM 2100
Starter electric
Starter volts 12
Torque 860 lb-ft (1166.2 Nm)
Torque RPM 1300
Drawbar (claimed) 210 hp (156.6 kW)
Drawbar (tested) 214.51 hp (160.0 kW)

Transmission

Clutch 355.6mm hydraulic dry disc
Description Ten-speed transmission with two-speed transfer case.
Gears 10 forward and 2 reverse / 20 forward and 4 reverse
Transmission Dana-Spicer 1010-2A
Transmission type 10-speed / 20-speed
Transmission type 10-speed / 20-speed

Mechanical

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

Hydraulics

Pressure 2250 psi (155.1 bar)
Pump flow 30.8 gpm (116.6 lpm)
Type open center
Valves 3 to 5

Hitch

Rear Type III OptOptional

Electrical

Battery volts 12
Charging amps 90
Charging system alternator
Ground negative

Dimensions & Tires

Height (exhaust) 155.8 inches (395 cm)
Length 252 inches (640 cm)
Max weight 34000 lbs (15422 kg)
Shipping weight 25000 lbs (11340 kg)
Wheelbase 128 inches (325 cm)
Width 96 inches (tractor body) (243 cm)
Front tire 23.1-34
Rear tire 23.1-34
Weight 25000 lbs (11340 kg)
Wheelbase 128 inches (325 cm)
Ag front 23.1-34
Ag rear 23.1-34

Nebraska Tractor Test 1239

Description 2200rpm diesel 10-speed 4WDApril 21 - May 2, 1977Link: Nebraska Tractor Test 1239 file / Drawbar performance / Gear 6 used for power test. / Gear 2 used for pull test.
Fuel use 15.9 gal/hour (60.2 l/hour)
Max power 201.95 hp (150.6 kW)
Max pull 26,612 lbs (12071 kg)

Nebraska Tractor Test 1452

Description 2100rpm diesel 20-speed 4WD9/21/1982Link: Nebraska Tractor Test 1452 file / Drawbar performance / Gear 11 used for power test. / Gear 4 used for pull test.
Fuel use 13.4 gal/hour (50.7 l/hour)
Max power 214.51 hp (160.0 kW)
Max pull 29,539 lbs (13398 kg)

References

Description ST Tractors published in 1981, by Steiger / ST Tractors published in 1982, by Steiger / Series III published in 1976, by Steiger

Tractor Tests

Description NTTL 1239: 2200rpm diesel 10-speed 4WD / NTTL 1452: 2100rpm diesel 20-speed 4WD