International Harvester 4186

The International Harvester 4186 is a tractor produced by International Harvester. It is equipped with a 436 ci 7.1 L engine. The listed engine power is 150.63 hp 112.3 kW. Transmission: 8 forward and 4 reverse. Drive type: 4x4 4WD. Operating weight: 15900 lbs 7212 kg.

Engine Power

150.63 hp 112.3 kW

Drive & Traction

4x4 4WD

Fuel & Capacities

100 gal 378.5 L

Transmission

8 forward and 4 reverse

Operating Weight

15900 lbs 7212 kg

Overview

	1976 - 1978 86 SeriesFour-wheel Drive (4WD) tractor 86 Series Four-wheel Drive (4WD) tractor

Production
Manufacturer	International Harvester
Four-wheel Drive (4WD) tractor
Built in Rock Island, Illinois, USA
Original price was $32,500 in 1978

International Harvester 4186 Engine
International Harvester 7.1L 6-cyl diesel
Fuel tank	100 gal 378.5 L
Engine details ...

International Harvester 4186 Transmission
8-speed gear
Transmission details ...

International Harvester 4186 Power
Drawbar (claimed)	130 hp 96.9 kW
PTO (claimed)	150 hp 111.9 kW
Drawbar (tested)	127.55 hp 95.1 kW
PTO (tested)	150.63 hp 112.3 kW
Performance test details ...

Mechanical
Drive	4x4 4WD
Steering	hydraulic power
Hydraulic expanding shoe brakes
Cab standard

Hydraulics
Type	open center
Valves	2
Pump flow	18 gpm 68.1 lpm

Tractor hitch
Rear Type	III/II

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	1000
Engine RPM	1000@1159

Dimensions & Tires
Wheelbase	102 inches 259 cm
Weight	15900 lbs 7212 kg
Front tire	23.1-26
Rear tire	23.1-26
Full dimensions and tires ...

References

1978 Buyer's Guide published by International Harvester

Engine

Engine Detail — 436 ci / 7.1 L Diesel

Manufacturer	International Harvester DT-436
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled
Displacement	436 ci 7.1 L
Bore/Stroke	4.30x5.00 inches 109 x 127 mm
Fuel system	direct injection
Rated RPM	2400
Starter volts	12

Transmission

Transmission — 8 forward and 4 reverse gear

Type	gear
Gears	8 forward and 4 reverse
Clutch	355.6mm dry disc
Four gears in two ranges, plus reverse range.

Dimensions

International Harvester 4186 Tires
Ag front	23.1-26
Ag rear	23.1-26

Dimensions
Wheelbase	102 inches 259 cm
Length	194 inches 492 cm
Height	139 inches 353 cm
Shipping weight	15900 lbs 7212 kg
Max weight	22400 lbs 10160 kg
Front tread	80 inches 203 cm
Rear tread	80 inches 203 cm

Tests

Nebraska Tractor Test 1116
Diesel 8-speed 4WD November 1 - December 6, 1972 Link: Nebraska Tractor Test 1116 file
PTO performance
Power at rated engine speed	150.63 hp 112.3 kW
Fuel use	9.9 gal/hour 37.5 l/hour
Power at rated PTO speed	152.72 hp 113.9 kW
Fuel use	9.1 gal/hour 34.4 l/hour
Drawbar performance
Max power	127.55 hp 95.1 kW
Gear 4-Low used for power test.
Max pull	19,434 lbs 8815 kg
Gear 1-Low used for pull test.

Photos

International Harvester 4186

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 4186 based on its 150.63 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	5 to 7 Bottom (18")5 - 7 铧 (45 cm)	Commercial / Field Scale	Large acreage tillage; requires front ballast weights.
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	15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙	Commercial / Field Scale	Wide commercial field leveling; requires hydraulic remotes.
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 International Harvester 4186.

Estimated Continuous Field Runtime: 12.8 hrs

Approximately 12.8 hours of continuous field operation at ~75% rated power on a full tank (100 gal / 378.5 L).

Estimated 75% Load Fuel Burn~7.8 gal/hr (29.7 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