Steiger Cougar IV CM-250

The Steiger Cougar IV CM-250 is a tractor produced by Steiger. It is equipped with a 638 ci 10.5 L engine. The listed engine power is Diesel (listed): 250 hp / 186.4 kW. Transmission: 20 forward and 4 reverse. Operating weight: 25011 lbs 11344 kg.

Engine Power

Diesel (listed): 250 hp / 186.4 kW

Fuel & Capacities

267 gal 1010.6 L

Transmission

20 forward and 4 reverse

Operating Weight

25011 lbs 11344 kg

Overview

	1983 - 1985 IV SeriesFour-wheel Drive (4WD) tractor IV Series Four-wheel Drive (4WD) tractor

Production
Manufacturer	Steiger
Four-wheel Drive (4WD) tractor
Built in Fargo, North Dakota, USA

Steiger Cougar IV CM-250 Engine
Caterpillar 10.5L 6-cyl diesel
Fuel tank	267 gal 1010.6 L
Engine details ...

Steiger Cougar IV CM-250 Transmission
20-speed gear
Transmission details ...

Steiger Cougar IV CM-250 Power
Engine	250 hp 186.4 kW
Drawbar (claimed)	218 hp 162.6 kW
Drawbar (tested)	211.20 hp 157.5 kW
Performance test details ...

Mechanical
Four-wheel drive
Final drives	outboard planetary
Articulated power steering
Hydraulic disc brakes
Steiger Safari Cab standard with air-conditioning.

Hydraulics
Type	open center
Pressure	2250 psi 155.1 bar
Valves	3 to 5
Pump flow	31 gpm 117.3 lpm

Tractor hitch
Rear Type	III OptOptional

Dimensions & Tires
Wheelbase	129 inches 327 cm
Weight	25011 lbs 11344 kg
Front tire	18.4x38
Rear tire	18.4x38
Full dimensions and tires ...

Electrical
Charging system	alternator
Charging amps	90
Batteries	3
Battery volts	12

References

Cougar IV published in 1983, by Steiger
The Steiger Line published in 1983

Engine

Engine Detail — 638 ci / 10.5 L Diesel

Manufacturer	Caterpillar 3306
Configuration	turbocharged aftercooled diesel, 6-cylinder, liquid-cooled inline
Displacement	638 ci 10.5 L
Bore/Stroke	4.75x6.00 inches 121 x 152 mm
Power	250 hp 186.4 kW
Rated RPM	2100
Operating RPM	1700-2100
Torque	860 lb-ft 1166.2 Nm
Torque RPM	1300
Starter type	electric
Oil capacity	29 qts 27.4 L
Coolant capacity	56 qts 53.0 L

Transmission

Transmission — 20 forward and 4 reverse gear

Type	gear
Gears	20 forward and 4 reverse
With 18.4x38 tires.

Dimensions

Steiger Cougar IV CM-250 Tires
Ag front	18.4x38
Ag rear	18.4x38
Ag front	20.8x34
	20.8x38
	23.1x34
	24.5x32
	30.5x32
Ag rear	20.8x34
	20.8x38
	23.1x34
	24.5x32
	30.5x32

Dimensions
Wheelbase	129 inches 327 cm
Length	253.6 inches 644 cm
Width	96 inches*Width over fenders. 243 cm
	144.3 inches*Width over 18.4x38 duals. 366 cm
Shipping weight	25011 lbs 11344 kg
Max weight	34000 lbs 15422 kg

Steiger Cougar IV CM-250 Height
	94.8 inches 240 cm
Cab	134.8 inches 342 cm
Exhaust	155.8 inches 395 cm

Tests

Nebraska Tractor Test 1452
Diesel 20-speed 4WD September 21 - October 1, 1982 Link: Nebraska Tractor Test 1452 file
Drawbar performance
Max power	211.20 hp 157.5 kW
Fuel use	13.9 gal/hour 52.6 l/hour
Gear 11 used for power test.
Max pull	29539 lbs 13398 kg
Gear 4 used for pull test.

Photos

Steiger Cougar IV CM-250 tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Steiger Cougar IV CM-250 based on its 250 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁	Commercial / Field Scale	High horsepower articulated/4WD field plowing.
Rotary Cutter / MowerMowing & Clearing	15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼	Commercial / Field Scale	Large commercial field and roadside mowing operations.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙	Commercial / Field Scale	Broad-acre grain tillage for high-drawbar tractors.
Hay BalerHay & Forage	Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m)	Commercial / Field Scale	High-capacity commercial forage harvesting (1000 RPM PTO).

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Steiger Cougar IV CM-250.

Estimated Continuous Field Runtime: 20.5 hrs

Approximately 20.5 hours of continuous field operation at ~75% rated power on a full tank (267 gal / 1010.7 L).

Estimated 75% Load Fuel Burn~13 gal/hr (49.2 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours