Steiger Cougar III PTA-251

The Steiger Cougar III PTA-251 is a tractor produced by Steiger. It is equipped with a 855 ci 14.0 L engine. The listed engine power is Diesel (listed): 251 hp / 187.2 kW. Transmission: Allison.

Engine Power

Diesel (listed): 251 hp / 187.2 kW

Transmission

Allison

Overview

	1981 III SeriesFour-wheel Drive (4WD) tractor III Series Four-wheel Drive (4WD) tractor

Production
Manufacturer	Steiger
Four-wheel Drive (4WD) tractor
Built in Fargo, North Dakota, USA
Original price was $82,400 in 1981

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

Steiger Cougar III PTA-251 Transmission
10-speed
Transmission details ...

Steiger Cougar III PTA-251 Power
Engine	251 hp 187.2 kW
Drawbar (claimed)	206 hp 153.6 kW
PTO (claimed)	125 hp 93.2 kW

Mechanical
Four-wheel drive
Articulated power steering
Safari Cab

Hydraulics
Type	open center

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540,1000

Dimensions & Tires
Front tire	18.4-38
Rear tire	18.4-38
Full dimensions and tires ...

Engine

Engine Detail — 855 ci / 14.0 L Diesel

Manufacturer	Cummins NT 855-C-250
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled
Displacement	855 ci 14.0 L
Bore/Stroke	5.50x6.00 inches 140 x 152 mm
Power	251 hp 187.2 kW
Starter	electric
Starter volts	12

Transmission

Transmission — Allison

Transmission	Allison
Gears	10 forward and 2 reverse

Dimensions

Steiger Cougar III PTA-251 Tires
Ag front	18.4-38
Ag rear	18.4-38

Dimensions

Recommended Implements & Sizing Guide

Engineering recommendations for Steiger Cougar III PTA-251 based on its 251 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 III PTA-251.

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