Steiger Cougar III ST-251 tractor specifications

1976 - 1982

1976 - 1982 III SeriesFour-wheel Drive (4WD) tractor

Production

Production Manufacturer:Steiger
Type:Four-wheel Drive (4WD) tractor
Factory:Fargo, North Dakota, USA
Original price:$75,000 (1982)

Steiger Cougar III ST-251 Power

Steiger Cougar III ST-251 Power Engine:250 hp
186.4 kW
Drawbar (claimed):206 hp
153.6 kW
Drawbar (tested):199.04 hp
148.4 kW
power test details ...

1976 - 1982

III Series

Four-wheel Drive (4WD) tractor

Nebraska Tractor Test 1233

Nebraska Tractor Test 1233
Diesel 10-speed 4WD March 26 - April 30, 1977 Link: Nebraska Tractor Test 1233 file
Drawbar performance
Max power:	199.04 hp 148.4 kW
Fuel use:	13.5 gal/hour 51.1 l/hour
Gear 6 used for power test.
Max pull:	26,880 lbs 12192 kg
Gear 2 used for pull test.

Steiger Cougar III ST-251 Engine

Steiger Cougar III ST-251 Engine Cummins 14.0L 6-cyl diesel Engine details ...

1976 - 1982

III Series

Four-wheel Drive (4WD) tractor

Engine Detail

Engine Detail
Cummins NT-855C
turbocharged diesel
6-cylinder
liquid-cooled
Displacement:	855 ci 14.0 L
Bore/Stroke:	5.50x6.00 inches 140 x 152 mm
Power:	250 hp 186.4 kW
Compression:	14.1:1
Rated RPM:	2100
Idle RPM:	830-2260
Torque:	850 lb-ft 1152.6 Nm
Torque RPM:	1400
Starter volts:	12
Oil capacity:	44 qts 41.6 L
Coolant capacity:	56 qts 53.0 L

Mechanical

Mechanical Chassis:4x4 articulated 4WD
Final drives:outboard planetary
Steering:hydrostatic power
Brakes:hydraulic disc
Cab:Safari Cab standard with heat and air-conditioning.
Transmissions:10-speed
20-speed
Transmission details ...

1976 - 1982

III Series

Four-wheel Drive (4WD) tractor

Transmissions overview

Transmissions overview
10-speed
20-speed

Transmission

Transmission
Transmission:	Spicer SST 1010
Gears:	10 forward and 2 reverse
Clutch:	hydraulic dry discs

Speeds

Speeds

Transmission

Transmission
Gears:	20 forward and 4 reverse
Clutch:	394mm dry disc
Ten-speed transmission with two-speed transfer case.

Speeds

Speeds

Capacity

Capacity Fuel:267 gal
1010.6 L
Hydraulic system:33 gal
124.9 L

Hydraulics

Hydraulics Type:open center
Capacity:33 gal
124.9 L
Pressure:2250 psi
155.1 bar
Valves:4
Pump flow:30.8 gpm
116.6 lpm

Tractor hitch

Tractor hitch Rear Type:3

Dimensions & Tires

Dimensions & Tires Wheelbase:128 inches
325 cm
Weight:26,610 lbs
12070 kg
Front tire:23.1-34
Rear tire:23.1-34
Full dimensions and tires ...

1976 - 1982

III Series

Four-wheel Drive (4WD) tractor

Steiger Cougar III ST-251 Tires

Steiger Cougar III ST-251 Tires
Ag front:	23.1-34
Ag rear:	23.1-34

Dimensions

Dimensions
Wheelbase:	128 inches 325 cm
Length:	252 inches 640 cm
Width:	96 inches 243 cm (tractor body)
Height (exhaust):	155.8 inches 395 cm
Shipping weight:	26,610 lbs 12070 kg
Max weight:	34,000 lbs 15422 kg
Front axle:	Raba 598
Rear axle:	Raba 598

Cougar III ST-251 Serial Numbers

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

how to read serial numbers...