Steiger Cougar II ST-300

The Steiger Cougar II ST-300 is a tractor produced by Steiger. It is equipped with a 638 ci 10.5 L engine. The listed engine power is Diesel (listed): 300 hp / 223.7 kW. Transmission: Dana-Spicer ST-1010. Operating weight: 22000 lbs 9979 kg.

Engine Power

Diesel (listed): 300 hp / 223.7 kW

Transmission

Dana-Spicer ST-1010

Operating Weight

22000 lbs 9979 kg

Overview

	1974 - 1976 II SeriesFour-wheel Drive (4WD) tractor II Series Four-wheel Drive (4WD) tractor

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

Steiger Cougar II ST-300 Engine
Caterpillar 10.5L 6-cyl diesel
Engine details ...

Steiger Cougar II ST-300 Transmission
10-speed
Transmission details ...

Steiger Cougar II ST-300 Power
Engine	300 hp 223.7 kW
Drawbar (claimed)	227 hp 169.3 kW

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

Hydraulics
Type	open center
Valves	3
Pump flow	25 gpm 94.6 lpm
Steering flow	18 gpm 68.1 lpm

Tractor hitch
Rear Type	III OptOptional

Dimensions & Tires
Wheelbase	121.5 inches 308 cm
Weight	22000 lbs 9979 kg
Front tire	23.1-30
Rear tire	23.1-30
Full dimensions and tires ...

Electrical
Charging system	alternator
Charging amps	62
Battery volts	12

References

4-Wheel Drive Agri-Power published in 1974, by Steiger

Engine

Engine Detail — 638 ci / 10.5 L Diesel

Manufacturer	Caterpillar 3006T
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled horizontal-shaft inline
Displacement	638 ci 10.5 L
Bore/Stroke	4.75x6.00 inches 121 x 152 mm
Power	300 hp 223.7 kW
Rated RPM	2200
Torque	681 lb-ft 923.4 Nm
Torque RPM	1550
Starter volts	12
Coolant capacity	60 qts 56.8 L

Transmission

Transmission — Dana-Spicer ST-1010

Transmission	Dana-Spicer ST-1010
Gears	10 forward and 2 reverse
With 23.1-30 tires.

Dimensions

Steiger Cougar II ST-300 Tires
Ag front	23.1-30
Ag rear	23.1-30

Dimensions
Wheelbase	121.5 inches 308 cm
Length	244 inches 619 cm
Width	96 inches*Widith with 23.1-30 tires. 243 cm
Height (cab)	133.25 inches 338 cm
Weight	22000 lbs 9979 kg

Photos

Steiger Cougar II ST-300

Recommended Implements & Sizing Guide

Engineering recommendations for Steiger Cougar II ST-300 based on its 300 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 II ST-300.

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