International Harvester 1206

The International Harvester 1206 is a tractor produced by International Harvester. It is equipped with a 361 ci 5.9 L engine. The listed engine power is 112.64 hp 84.0 kW. Transmission: Torque Amplifier. Operating weight: 10115 lbs 4588 kg.

Engine Power

112.64 hp 84.0 kW

Fuel & Capacities

35 gal 132.5 L

Transmission

Torque Amplifier

Operating Weight

10115 lbs 4588 kg

Overview

	1965 - 1967

Production
Manufacturer	International Harvester
Built in Rock Island, Illinois, USA
Total built	1,289
Original price was $9,450 in 1967

Variants
IH 1206	standard front
Farmall 1206	row-crop
Wheatland	larger platform, heavy drawbar

International Harvester 1206 Engine
International Harvester 5.9L 6-cyl diesel
Fuel tank	35 gal 132.5 L
Engine details ...

International Harvester 1206 Power
Drawbar (claimed)	99.6 hp 74.3 kW
PTO (claimed)	112.6 hp 84.0 kW
Drawbar (tested)	95.00 hp 70.8 kW
PTO (tested)	112.64 hp 84.0 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Power steering
Differential hydraulic dry disc brakes
Open operator station. Optional one-door cab. Optional heat and air-conditioning.

Hydraulics
Valves	0 to 2
Pump flow	12 gpm 45.4 lpm

Tractor hitch
Rear Type	III

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

Dimensions & Tires
Wheelbase	91 inches 231 cm
Weight	10115 lbs 4588 kg
Front tire	11.00-16
Rear tire	24.5-32
Full dimensions and tires ...

References

1206 Turbo Tractors published by International Harvester
Farm Equipment Reference Catalog published in 1965, by International Harvester

Engine

Engine Detail — 361 ci / 5.9 L Diesel

Manufacturer	International Harvester DT361
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled
Displacement	361 ci 5.9 L
Bore/Stroke	4.125x4.25 inches 105 x 108 mm
Air cleaner	two-stage dry
Compression	17.0:1
Rated RPM	2400
Starter volts	12

Transmission

Transmission options
8-speed unsynchronized
16-speed partial power shift

Transmission — 8 forward and 4 reverse unsynchronized

Type	unsynchronized
Gears	8 forward and 4 reverse

Transmission — Torque Amplifier

Transmission	Torque Amplifier
Type	partial power shift
Gears	16 forward and 8 reverse
The Torque Amplifier (TA) provides a clutchless power shift between Direct Drive (DD) and the lower TA gearing.

Dimensions

International Harvester 1206 Tires
Ag front	11.00-16
Ag rear	24.5-32

Dimensions
Wheelbase	91 inches 231 cm
Length	153 inches 388 cm
Width	94 inches 238 cm
Height (steering wheel)	86 inches 218 cm
Operating weight	10115 lbs 4588 kg
Ballasted weight	13580 lbs 6159 kg

Tests

Nebraska Tractor Test 910
Diesel Torque Amplifier 2WD September 8 - 23, 1965 Link: Nebraska Tractor Test 910 file
PTO performance
Power at rated engine speed	112.64 hp 84.0 kW
Fuel use	7.1 gal/hour 26.9 l/hour
Power at rated PTO speed	106.63 hp 79.5 kW
Fuel use	6.5 gal/hour 24.6 l/hour
Drawbar performance
Max power	95.00 hp 70.8 kW
Fuel use	7.0 gal/hour 26.5 l/hour
Gear 1-DD used for power test.
Max pull	10,744 lbs 4873 kg
Gear 1-TA used for pull test.

Photos

International Harvester 1206

International 1206 Wheatland

4x4 International 1206 Wheatland

International 1206 operator station and controls.

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 1206 based on its 112.64 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)	Heavy Duty	Heavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing	10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼	Heavy Duty	Wide swath pasture and crop residue shredding.
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	10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙	Heavy Duty	Aggressive residue cutting in corn/cotton stubble.
Hay BalerHay & Forage	5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机	Heavy Duty	High density baling; requires minimum 85 PTO HP.

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 1206.

Estimated Continuous Field Runtime: 6 hrs

Approximately 6 hours of continuous field operation at ~75% rated power on a full tank (35 gal / 132.5 L).

Estimated 75% Load Fuel Burn~5.9 gal/hr (22.2 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