Tractor · 1976Unverified
Steiger Cougar III ST-251
Steiger Cougar III ST-251 — III Series · 250 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
250 hp
Max power
148.4 kW
Weight
12070 kg
Hover a source tag to verify
Overview
ManufacturerSteigerReference
Four-wheel Drive (4WD) tractorReference
Built in Fargo, North Dakota, USAReference
Original price was $75,000 in 1982Reference
Four-wheel driveReference
Final drivesoutboard planetaryReference
Articulated power steeringReference
Hydraulic disc brakesReference
Safari Cab standard with heat and air-conditioning.Reference
Engine
Cummins 14.0L 6-cyl dieselReference
Engine186.4 kWReference
Drawbar (claimed)153.6 kWReference
Drawbar (tested)148.4 kWReference
Cummins NT-855CReference
turbocharged dieselReference
6-cylinderReference
liquid-cooledReference
Displacement14.0 LReference
Bore/Stroke140 x 152 mmReference
Power186.4 kWReference
Compression14.1:1Reference
Rated RPM2100Reference
Idle RPM830-2260Reference
Torque1152.6 NmReference
Torque RPM1400Reference
StarterelectricReference
Starter volts12Reference
Oil capacity41.6 LReference
Coolant capacity53.0 LReference
Max power148.4 kWReference
Transmission
10-speedReference
20-speedReference
TransmissionSpicer SST 1010Reference
Gears10 forward and 2 reverseReference
Clutchhydraulic dry discsReference
Gears20 forward and 4 reverseReference
Clutch394mm dry discReference
Ten-speed transmission with two-speed transfer case.Reference
Capacities
Fuel1010.6 LReference
PTO & Hydraulics
Hydraulic system124.9 LReference
Typeopen centerReference
Capacity124.9 LReference
Pressure155.1 barReference
Valves4Reference
Pump flow116.6 lpmReference
Rear TypeIIIReference
Dimensions
Wheelbase325 cmReference
Weight12070 kgReference
Front tire23.1-34Reference
Rear tire23.1-34Reference
Ag front23.1-34Reference
Ag rear23.1-34Reference
Length640 cmReference
Width243 cmReference
Height (exhaust)395 cmReference
Shipping weight12070 kgReference
Max weight15422 kgReference
Front axleRaba 598Reference
Raba 598 rear axleReference
Cougar III ST-251 Serial Numbers
1976106-00001Reference
1977106-00166Reference
1978106-00256Reference
1979106-00370Reference
1980106-00737Reference
1981106-01055Reference
1982106-01501Reference
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 4WDMarch 26 - April 30, 1977Link: Nebraska Tractor Test 1233 fileReference
Drawbar performanceReference
Fuel use51.1 l/hourReference
Gear 6 used for power test.Reference
Max pull12192 kgReference
Gear 2 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.