International Harvester 606

The International Harvester 606 is a tractor produced by International Harvester. It is equipped with a 221 ci 3.6 L engine. The listed engine power is 54.31 hp 40.5 kW. Transmission: Fast Reverser. Operating weight: 5215 to 5465 pounds.

Engine Power

54.31 hp 40.5 kW

Fuel & Capacities

LP gas

Transmission

Fast Reverser

Operating Weight

5215 to 5465 pounds

Overview

	1962 - 1967 Utility tractor

Production
Manufacturer	International Harvester
Utility tractor
Total built	7,348
Original price was $4,900 in 1967

International Harvester 606 Power
Drawbar (claimed)	45 hp 33.6 kW
PTO (claimed)	50 hp 37.3 kW
Drawbar (tested)	46.71 hp 34.8 kW
PTO (tested)	54.31 hp 40.5 kW
Performance test details ...

Mechanical
Two-wheel drive
Independent mechanical disc brakes
Open operator station.

Hydraulics
Valves	0 to 2
Total flow	12 gpm 45.4 lpm
	17 gpmOptOptional 64.3 lpm

Tractor hitch
Rear Type	II/I

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540 (1.375)
Engine RPM	540@2000

Dimensions & Tires
Wheelbase	78 inches 198 cm
Weight	5215 to 5465 pounds
Front tire	6.00-16
Rear tire	14.9-28
Full dimensions and tires ...

Belt Pulley
Diameter	11 inches 27 cm
RPM	1062
Speed	3057 ft/min 931.77 meters/min

References

Industrial Tractors & Equipment Buyers Guide published in 1962, by International Harvester
Farm Loaders published in 1962, by International Harvester
Farm Loaders published in 1965, by International Harvester
Farm Loaders published in 1970, by International Harvester
New International 606 Tractor published by International Harvester

Engine

Engine options
International Harvester 3.6L 6-cyl gasoline
International Harvester 3.9L 6-cyl diesel
International Harvester 3.6L 6-cyl LP gas

Engine Detail — 221 ci / 3.6 L Gasoline

Manufacturer	International Harvester C-221
Fuel Type	Gasoline
Configuration	6-cylinder, liquid-cooled
Displacement	221 ci 3.6 L
Bore/Stroke	3.5625x3.6875 inches 90 x 94 mm
Air cleaner	dry
Rated RPM	2000
Starter volts	12
Coolant capacity	20.5 qts 19.4 L

Engine Detail — 236 ci / 3.9 L Diesel

Manufacturer	International Harvester D-236
Fuel Type	Diesel
Configuration	6-cylinder, liquid-cooled
Displacement	236 ci 3.9 L
Bore/Stroke	3.6875x3.6875 inches 94 x 94 mm
Air cleaner	dry
Rated RPM	2000
Coolant capacity	23 qts 21.8 L

Engine Detail — 221 ci / 3.6 L LP Gas

Manufacturer	International Harvester C-221
Fuel Type	LP gas
Configuration	6-cylinder, liquid-cooled
Displacement	221 ci 3.6 L
Bore/Stroke	3.5625x3.6875 inches 90 x 94 mm
Air cleaner	dry
Rated RPM	2000
Coolant capacity	20.5 qts 19.4 L

Transmission

Transmission options
10-speed
5-speed

Transmission — Torque Amplifier

Transmission	Torque Amplifier
Gears	10 forward and 2 reverse
Oil capacity	52 qts 49.2 L
Five forward and one reverse gear plus Torque Amplifier (TA). The TA provides a powershift from direct drive (DD) to the lower TA speed. High-speed option provides 40% faster first gear.
With 14.9-28 rear tires.

Transmission — Fast Reverser

Transmission	Fast Reverser
Gears	5 forward and reverse
Oil capacity	52 qts 49.2 L
Five gears with reverser. High speed option provides 40% faster first gear.
With 14.9-28 rear tires.

Dimensions

International Harvester 606 Tires
Ag front	6.00-16
Ag rear	14.9-28
Ag rear	12.4-28
	13.6-28
	14.9-28

Dimensions
Wheelbase	78 inches 198 cm
Height (steering wheel)	62 inches 157 cm
Front tread	54 to 78 inches 137 to 198 cm
Front tread	52 inches 132 cm
Rear tread	52 to 76 inches 132 to 193 cm

International Harvester 606 Weight
Gas Operating	5215 lbs 2365 kg
Diesel Operating	5465 lbs 2478 kg
Ballasted	8908 lbs*Diesel tractor with fluid-filled rear tires and iron weights on front and rear wheels. 4040 kg

Tests

Tractor Tests
NTTL 825: gasoline Torque Amplifier 2WD
NTTL 826: diesel Torque Amplifier 2WD

Nebraska Tractor Test 825
Gasoline Torque Amplifier 2WD September 26 - October 9, 1962 Link: Nebraska Tractor Test 825 file
PTO performance
Power at rated engine speed	53.8 hp 40.1 kW
Fuel use	4.4 gal/hour 16.7 l/hour
Drawbar performance
Max power	45.68 hp 34.1 kW
Fuel use	4.4 gal/hour 16.7 l/hour
Gear 3-Direct used for power test.
Max pull	6621 lbs 3003 kg
Gear 1-Direct used for pull test.

Nebraska Tractor Test 826
Diesel Torque Amplifier 2WD September 27 - October 9, 1962 Link: Nebraska Tractor Test 826 file
PTO performance
Power at rated engine speed	54.31 hp 40.5 kW
Fuel use	3.7 gal/hour 14.0 l/hour
Drawbar performance
Max power	46.71 hp 34.8 kW
Fuel use	3.7 gal/hour 14.0 l/hour
Gear 3-Direct used for power test.
Max pull	6768 lbs 3069 kg
Gear 1-Direct used for pull test.

Attachments

Attachment overview
International Harvester 2001 loader
International Harvester 2000 loader

Photos

International Harvester 606

International 606, operator station and controls.

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 606 based on its 54.31 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)	Medium Duty	Standard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing	6 ft (72 in)1.8 m	Medium Duty	Medium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep	66 to 72 in165 - 180 cm	Medium Duty	Standard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage	7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙	Medium Duty	Field leveling and clod breaking behind plows.
Hay BalerHay & Forage	Small Square Baler (14x18")小方捆打捆机 (36x46 cm)	Medium Duty	Classic 2-string baler for horse and small livestock hay.

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 606.

Estimated Continuous Field Runtime: 1.3 hrs

Approximately 1.3 hours of continuous field operation at ~75% rated power on a full tank (3.7 gal / 14 L).

Estimated 75% Load Fuel Burn~2.8 gal/hr (10.7 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