Production
| Description | Built in Fargo, North Dakota, USA / Original price was $89,000 in 1983 |
|---|---|
| Drive type | Four-wheel Drive (4WD) tractor |
| Manufacturer | Steiger |
Engine
| Air cleaner | two paper elements / two paper elements |
|---|---|
| Bore/Stroke | 5.50x6.00 inches (140 x 152 mm) / 5.40x6.50 inches (137 x 165 mm) |
| Compression | 14.1:1 |
| Coolant capacity | 61 qts (57.7 L) / 70 qts (66.2 L) |
| Description | Cummins NT-855C / turbocharged diesel / 6-cylinder / liquid-cooled inline / Caterpillar 3406DIT / turbocharged diesel / 6-cylinder / liquid-cooled inline |
| Displacement | 855 ci (14.0 L) / 893 ci (14.6 L) |
| Oil capacity | 35 qts (33.1 L) / 36 qts (34.1 L) |
| Power | 280 hp (208.8 kW) / 280 hp (208.8 kW) |
| Rated RPM | 2100 / 2100 |
| Starter volts | 12 / 12 |
| Torque | 920 lb-ft (1247.5 Nm) / 945 lb-ft (1281.4 Nm) |
| Torque RPM | 1400 / 1200 |
| Engine type | Cummins 14.0L 6-cyl diesel / Caterpillar 14.6L 6-cyl diesel |
| Drawbar (tested) | 249.69 hp (186.2 kW) |
| Engine type | Cummins 14.0L 6-cyl diesel / Caterpillar 14.6L 6-cyl diesel |
| Fuel tank | 267 gal (1010.6 L) |
Transmission
| Clutch | 393.7mm hydraulic dry disc |
|---|---|
| Description | Ten-speed transmission with two-speed transfer case. |
| Gears | 20 forward and 4 reverse |
| Transmission | Dana-Spicer 1010 |
| Transmission type | 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
| Cat Pump flow | 31.9 gpm (120.7 lpm) |
|---|---|
| Cummins Pump flow | 28.6 gpm (108.3 lpm) |
| Pressure | 2250 psi (155.1 bar) |
| 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) |
| Wheelbase | 128 inches (325 cm) |
| Width | 96 inches (tractor body) (243 cm) |
| Front tire | 18.4x38 |
| Rear tire | 18.4x38 |
| Weight | 25600 to 30500 pounds |
| Wheelbase | 128 inches (325 cm) |
| Ag front | 18.4x38 |
| Ag rear | 18.4x38 |
Cougar III ST-280 Serial Numbers
| 1981 | 110-00001 / 111-00001 |
|---|---|
| 1982 | 110-01501 / 111-01501 |
| 1983 | 110-02501 / 111-02501 |
| Description | FAQ: How to read a serial number table. |
Nebraska Tractor Test 1401
| Description | Cummins diesel 20-speed 4WDAugust 27 - September 9, 1981Link: Nebraska Tractor Test 1401 file / Drawbar performance / Gear 12 used for power test. / Gear 1 used for pull test. |
|---|---|
| Max power | 249.69 hp (186.2 kW) |
| Max pull | 31,517 lbs (14296 kg) |
Nebraska Tractor Test 1412
| Description | Cat diesel 20-speed 4WDOctober 19 - 30, 1981Link: Nebraska Tractor Test 1412 file / Drawbar performance / Gear 10 used for power test. / Gear 4 used for pull test. |
|---|---|
| Fuel use | 15.1 gal/hour (57.2 l/hour) |
| Max power | 247.27 hp (184.4 kW) |
| Max pull | 32,462 lbs (14724 kg) |
References
| Description | ST Tractors published in 1981, by Steiger / ST Tractors published in 1982, by Steiger |
|---|
Steiger Cougar III ST-280 Weight
| Cat Shipping | 25900 lbs (11748 kg) |
|---|---|
| Cummins Shipping | 25600 lbs (11612 kg) |
| Max capacity | 34000 lbs (15422 kg) |
| Operating | 30500 lbs (13834 kg) |
Tractor Tests
| Description | NTTL 1401: Cummins diesel 20-speed 4WD / NTTL 1412: Cat diesel 20-speed 4WD |
|---|