Production
| Description | Built in Fargo, North Dakota, USA / Original price was $75,000 in 1982 |
|---|---|
| Drive type | Four-wheel Drive (4WD) tractor |
| Manufacturer | Steiger |
Engine
| Engine type | Cummins 14.0L 6-cyl diesel |
|---|---|
| Bore/Stroke | 5.50x6.00 inches (140 x 152 mm) |
| Compression | 14.1:1 |
| Coolant capacity | 56 qts (53.0 L) |
| Description | Cummins NT-855C / turbocharged diesel / 6-cylinder / liquid-cooled |
| Displacement | 855 ci (14.0 L) |
| Idle RPM | 830-2260 |
| Oil capacity | 44 qts (41.6 L) |
| Power | 250 hp (186.4 kW) |
| Rated RPM | 2100 |
| Starter | electric |
| Starter volts | 12 |
| Torque | 850 lb-ft (1152.6 Nm) |
| Torque RPM | 1400 |
| Drawbar (claimed) | 206 hp (153.6 kW) |
| Drawbar (tested) | 199.04 hp (148.4 kW) |
Transmission
| Clutch | hydraulic dry discs / 394mm dry disc |
|---|---|
| Description | Ten-speed transmission with two-speed transfer case. |
| Gears | 10 forward and 2 reverse / 20 forward and 4 reverse |
| Transmission | Spicer SST 1010 |
| 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 disc brakes |
| Drive type | Four-wheel drive |
| Final drives | outboard planetary |
Capacity
| Fuel | 267 gal (1010.6 L) |
|---|---|
| Hydraulic system | 33 gal (124.9 L) |
Hydraulics
| Capacity | 33 gal (124.9 L) |
|---|---|
| Pressure | 2250 psi (155.1 bar) |
| Pump flow | 30.8 gpm (116.6 lpm) |
| Type | open center |
| Valves | 4 |
Hitch
| Rear Type | III OptOptional |
|---|
Electrical
| Batteries | 2 |
|---|---|
| Battery AH | 208 |
| Battery Group | 8D |
| Battery volts | 12 |
| Charging amps | 90 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Description | Raba 598 rear axle |
|---|---|
| Front axle | Raba 598 |
| Height (exhaust) | 155.8 inches (395 cm) |
| Length | 252 inches (640 cm) |
| Max weight | 34000 lbs (15422 kg) |
| Shipping weight | 26610 lbs (12070 kg) |
| Wheelbase | 128 inches (325 cm) |
| Width | 96 inches (tractor body) (243 cm) |
| Front tire | 23.1-34 |
| Rear tire | 23.1-34 |
| Weight | 26610 lbs (12070 kg) |
| Wheelbase | 128 inches (325 cm) |
| Ag front | 23.1-34 |
| Ag rear | 23.1-34 |
Cougar III ST-251 Serial Numbers
| 1976 | 106-00001 |
|---|---|
| 1977 | 106-00166 |
| 1978 | 106-00256 |
| 1979 | 106-00370 |
| 1980 | 106-00737 |
| 1981 | 106-01055 |
| 1982 | 106-01501 |
| Description | FAQ: How to read a serial number table. |
Nebraska Tractor Test 1233
| Description | Diesel 10-speed 4WDMarch 26 - April 30, 1977Link: Nebraska Tractor Test 1233 file / Drawbar performance / Gear 6 used for power test. / Gear 2 used for pull test. |
|---|---|
| Fuel use | 13.5 gal/hour (51.1 l/hour) |
| Max power | 199.04 hp (148.4 kW) |
| Max pull | 26,880 lbs (12192 kg) |
References
| Description | ST Tractors - Cummins Powered Series III Cougar ST 251, Panther ST 310 and Panther ST 350 published in 1979, by Steiger / Series III published in 1976, by Steiger |
|---|