international harvester 1066

1971 - 1976

66 Series

Row-Crop tractor

66 Series

Row-Crop tractor

Manufacturer

International Harvester

Row-Crop tractor

Built in Rock Island, Illinois, USA

Total built

54,947

Original price was $21,100 in 1976

The hydrostatic drive 1066 Hydro was later renamed the Hydro 100. This was due to confusion over drawbar horsepower. The hydrostatic drive took a lot of power to operate, and the 1066 Hydro had much less power than a gear-driven 1066. Torque Amplifer (TA) was optional. The 1066 engine was altered in 1973 to increase horsepower.

1066 Hi-Clear

high-crop

International Harvester 6.8L 6-cyl diesel

Fuel tank

42 gal 159.0 L

8-speed gear

16-speed two-speed power shift

hydrostatic

Drawbar (claimed)

108 hp 80.5 kW

PTO (claimed)

126 hp 94.0 kW

Drawbar (tested)

105.95 hp 79.0 kW

PTO (tested)

125.68 hp 93.7 kW

Two- or four-wheel drive

Power steering

Hydraulic dry disc brakes

Open operator station. Two-post fixed ROPS available. Cab available with optional air-conditioning.

Type

open center

Pump flow

12 gpm 45.4 lpm

Total flow

21 gpm 79.5 lpm

Steering flow

9 gpm 34.1 lpm

Rear Type

III/II

Rear lift (at 24"/610mm)

5600 lbs 2540 kg

Rear PTO

independent

Rear PTO Type

540/1000

Wheelbase

105 inches 266 cm

Weight

12148 to 13345 pounds

Front tire

11L-15

Rear tire

18.4-38

Serial number plate on the left side of the tractor's clutch housing.

1971

7101

1972

12677

1973

24205

1974

34949

1975

46855

1976

56672

FAQ: How to read a serial number table.

1066 Turbo Tractor published in 1971, by International Harvester

1066 Hydrostatic Tractor published in 1971, by International Harvester

766, 966, 1066 and 1466 Tractors published in 1972, by International Harvester

766, 966, 1066 and 1466 Tractors published in 1973, by International Harvester