International Harvester 606 tractor

International Harvester 606

Power

55 hp[P] hp

Production

1962-1967

Engine

LP gas, 6-cylinder

Transmission

Torque Amplifier

Drive

2WD

From the same series:

504

Introduction

International Harvester 606 Utility Tractor

The International Harvester 606 is a utility tractor produced between 1962 and 1967. Designed for general agricultural tasks, this model served as a versatile workhorse in the mid-size power segment of its era.

Engine and Performance

The tractor is powered by the International Harvester C-221, a 6-cylinder liquid-cooled engine with a displacement of 3.6 liters. This engine, optimized for LP gas, produces a rated 55 horsepower at 2000 RPM. The cooling system has a capacity of 19.4 liters, ensuring thermal stability during extended operation.

Transmission and Drivetrain

The 606 was offered with two primary transmission configurations: a 5-speed unit equipped with a Torque Amplifier (TA) providing 10 forward and 2 reverse gears, or a 5-speed Fast Reverser transmission. The Torque Amplifier allows for on-the-go shifting between direct drive and a lower reduction gear, enhancing versatility in varying load conditions.

Hydraulics and PTO

The hydraulic system delivers a standard flow of 45.4 liters per minute (12 gpm), with an optional configuration increasing flow to 64.3 liters per minute (17 gpm). The independent rear PTO operates at 540 RPM at a rated engine speed of 2000 RPM, allowing for consistent power delivery to implements.

Dimensions and Chassis

Built on a 198 cm wheelbase, the tractor features a two-wheel drive chassis with independent mechanical disc brakes. The machine provides adjustable tread widths to accommodate different row spacings, with the rear tread ranging from 132 to 193 cm and the front from 137 to 198 cm.

Conclusion

With 7,348 units manufactured, the International Harvester 606 remains a notable model from the 1960s. Its combination of a 6-cylinder engine and flexible transmission options made it a capable utility tractor suitable for a wide range of field and farmyard operations.

Production Information of International Harvester, 606

  • Original price was $4,900 in 1967
  • Utility tractor
ManufacturerInternational Harvester
Total built7,348

Dimension and Tires Information of International Harvester, 606

Wheelbase78 inches [198 cm]
Rear tread52 to 76 inches [132 to 193 cm]
Front tread52 inches [132 cm]
Height (steering wheel)62 inches [157 cm]
Front tread54 to 78 inches [137 to 198 cm]
Ag front6.00-16
Ag front(optional)14.9-28
Ag front(optional)13.6-28
Ag rear14.9-28
Ag rear12.4-28

Engine Specifications of International Harvester, 606

  • International Harvester C-221
  • Liquid-cooled
  • LP gas
  • 6-cylinder
Air cleanerDry
Displacement221 ci [3.6 L]
Rated RPM2000
Bore/Stroke3.5625x3.6875 inches [90 x 94 mm]
Coolant capacity20.5 qts [19.4 L]
Coolant capacity20.5 qts [19.4 L]

Transmission Information of International Harvester, 606

Transmission variants 1

  • 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.
TransmissionTorque Amplifier
Gears10 forward and 2 reverse
Oil capacity52 qts [49.2 L]

Transmission variants 2

  • Five gears with reverser. High speed option provides 40% faster first gear.
TransmissionFast Reverser
Gears5 forward and reverse
Oil capacity52 qts [49.2 L]
  • 10-speed
  • 5-speed

Mechanical Specs of International Harvester, 606

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

Power Information of International Harvester, 606

Rear PTOIndependent
Rear PTO Type540 (1.375)
Engine RPM540@2000

Hydraulics Specifications of International Harvester, 606

Valves0 to 2
Total flow12 gpm [45.4 lpm]
Total flow(optional)17 gpm [64.3 lpm]

Three-Point Hitch of International Harvester, 606

Rear TypeII/I

Where it sits

With 55 hp[P] HP, the International Harvester 606 sits between 504 (51 HP) and 656 (70 HP) in International Harvester's range. Its power puts it in the 57th percentile of 1960s models in our database (709 machines).

Frequently asked questions

How much horsepower does the International Harvester 606 have?

The International Harvester 606 delivers 55 hp[P] HP.

What years was the International Harvester 606 produced?

The International Harvester 606 was produced in 1962-1967.

What engine does the International Harvester 606 have?

The International Harvester 606 is powered by a LP gas, 6-cylinder engine.

What transmission does the International Harvester 606 use?

The International Harvester 606 uses a Torque Amplifier transmission.

Is the International Harvester 606 4WD?

The International Harvester 606 is available in 2WD.

Compare the International Harvester 606 with another model