International Harvester 1066 tractor specifications

1971 - 1976

1971 - 1976 66 SeriesRow-Crop tractor

Series:

Series:Hydro 100 ← 1066 → 14661086 ↓

1973 - 1976

66 Series

Row-Crop tractor

Series:

Series:	966 ←	Hydro 100	→ 1066
		Hydro 186 ↓

Production

Production
Manufacturer:	International Harvester
Type:	Row-Crop tractor
Original price:	$21,700 (1976)

International Harvester Hydro 100 Power

International Harvester Hydro 100 Power
Drawbar (claimed):	80 hp 59.7 kW
PTO (claimed):	104.17 hp 77.7 kW
Drawbar (tested):	78.31 hp 58.4 kW
PTO (tested):	104.17 hp 77.7 kW
power test details ...

International Harvester Hydro 100 Engine

International Harvester Hydro 100 Engine
International Harvester 7.1L 6-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	hydrostatic power
Brakes:	differential hydraulic dry disc
Cab:	Open operator station. Two-post ROPS and cab available.
Transmission:	hydrostatic
Transmission details ...

Hydraulics

Hydraulics
Pump flow:	12 gpm 45.4 lpm

Tractor hitch

Tractor hitch
Rear Type:	II

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	540/1000

Dimensions & Tires

Dimensions & Tires
Wheelbase:	104.8 inches 266 cm
Weight:	12,130 lbs 5502 kg
Front tire:	10.00-16
Rear tire:	18.4-34
Full dimensions and tires ...

Hydro 100 Serial Numbers

Hydro 100 Serial Numbers
Location:	Hydro drive housing, left side
1973:	7501
1974:	7727
1975:	10915
1976:	12434
how to read serial numbers...

Production

Production Manufacturer:International Harvester
Type:Row-Crop tractor
Factory:Rock Island, Illinois, USA
Total built:54,947
Original price:$21,100 (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.

Variants

Variants 1066 Hi-Clear:high-crop

International Harvester 1066 Power

International Harvester 1066 Power 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
power test details ...

1971 - 1976

66 Series

Row-Crop tractor

Series:

Series:	Hydro 100 ←	1066	→ 1466
		1086 ↓

Nebraska Tractor Test 1081

Nebraska Tractor Test 1081
Diesel Torque Amplifier 2WD October 1 - 21, 1971 Link: Nebraska Tractor Test 1081 file
PTO performance
Power at rated engine speed:	116.23 hp 86.7 kW
Fuel use:	7.7 gal/hour 29.1 l/hour
Power at rated PTO speed:	112.18 hp 83.7 kW
Fuel use:	6.8 gal/hour 25.7 l/hour
Drawbar performance
Max power:	100.5 hp 74.9 kW
Fuel use:	7.6 gal/hour 28.8 l/hour
Gear 1-Hi-TA used for power test.
Max pull:	11,625 lbs 5273 kg
Gear 3-Lo-TA used for pull test.

Nebraska Tractor Test 1083

Nebraska Tractor Test 1083
Diesel hydrostatic 2WD October 7 - 25, 1971 Link: Nebraska Tractor Test 1083 file
PTO performance
Power at rated engine speed:	113.58 hp 84.7 kW
Fuel use:	7.9 gal/hour 29.9 l/hour
Power at rated PTO speed:	109.32 hp 81.5 kW
Fuel use:	7.0 gal/hour 26.5 l/hour
Drawbar performance
Max power:	84.88 hp 63.3 kW
Fuel use:	8.0 gal/hour 30.3 l/hour
Gear 5.4 MPH used for power test.
Max pull:	9,576 lbs 4343 kg
Gear 3.1 MPH used for pull test.

Nebraska Tractor Test 1124

Nebraska Tractor Test 1124
Diesel gear 2WD April 17 - 27, 1973 Link: Nebraska Tractor Test 1124 file
PTO performance
Power at rated engine speed:	125.68 hp 93.7 kW
Fuel use:	8.4 gal/hour 31.8 l/hour
Power at rated PTO speed:	119.2 hp 88.9 kW
Fuel use:	7.3 gal/hour 27.6 l/hour
Drawbar performance
Max power:	105.95 hp 79.0 kW
Fuel use:	8.3 gal/hour 31.4 l/hour
Gear 1-Hi-TA used for power test.
Max pull:	13,000 lbs 5896 kg
Gear 2-Lo-Direct used for pull test.

International Harvester 1066 Engine

International Harvester 1066 Engine International Harvester 6.8L 6-cyl diesel Fuel tank:42 gal
159.0 L
Engine details ...

1971 - 1976

66 Series

Row-Crop tractor

Series:

Series:	Hydro 100 ←	1066	→ 1466
		1086 ↓

Engine Detail

Engine Detail
International Harvester DT414
turbocharged diesel
6-cylinder
liquid-cooled
Displacement:	414 ci 6.8 L
Bore/Stroke:	4.30x4.75 inches 109 x 121 mm
Air cleaner:	dual stage dry
Rated RPM:	2400
	2600 (after 1973)
Starter volts:	12
Oil capacity:	18 qts 17.0 L
Coolant capacity:	25 qts 23.7 L

Mechanical

Mechanical Chassis:4x2 2WD
4x4 MFWD 4WD
Steering:power
Brakes:hydraulic dry disc
Cab:Open operator station. Two-post fixed ROPS available. Cab available with optional air-conditioning.
Transmissions:8-speed gear
16-speed partial power shift
hydrostatic
Transmission details ...

1971 - 1976

66 Series

Row-Crop tractor

Series:

Series:	Hydro 100 ←	1066	→ 1466
		1086 ↓

Transmissions overview

Transmissions overview
8-speed gear
16-speed partial power shift
hydrostatic

Transmission

Transmission
Type:	gear
Gears:	8 forward and 4 reverse
Clutch:	dry disc

Speeds

Speeds
With 18.4-38 rear tires.

Transmission

Transmission
Transmission:	Torque Amplifier
Type:	partial power shift
Gears:	16 forward and 8 reverse
Clutch:	dry disc
Four gears (1-4) in two ranges (Low/High) with the two-speed Torque Amplifier power shift (TA/direct).

Speeds

Speeds
With 18.4-38 rear tires.

Transmission

Transmission
Type:	hydrostatic
Gears:	infinite (two-range) forward and reverse

Speeds

Speeds

Hydraulics

Hydraulics Type:open center
Pump flow:12 gpm
45.4 lpm
Total flow:21 gpm
79.5 lpm
Steering flow:9 gpm
34.1 lpm

Tractor hitch

Tractor hitch Rear Type:III/II
Rear lift (at 24"/610mm):5600 lbs
2540 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:independent
Rear RPM:540/1000

Dimensions & Tires

Dimensions & Tires Wheelbase:105 inches
266 cm
Weight:12148 to 13345 pounds
Front tire:11L-15
Rear tire:18.4-38
Full dimensions and tires ...

1971 - 1976

66 Series

Row-Crop tractor

Series:

Series:	Hydro 100 ←	1066	→ 1466
		1086 ↓

International Harvester 1066 Tires

International Harvester 1066 Tires
Ag front:	11L-15
Ag rear:	18.4-38

Dimensions

Dimensions
Wheelbase:	105 inches 266 cm
Length:	165 inches 419 cm
Width:	98 inches 248 cm
Height (exhaust):	11 inches 27 cm
Clearance (drawbar):	16 inches 40 cm
Rear axle:	Bar: 3.25 inch diameter 82 mm

International Harvester 1066 Weight

International Harvester 1066 Weight
Operating:	12,148 lbs 5510 kg (gear)
	12,320 lbs 5588 kg (hydro)
	13,345 lbs 6053 kg (duals)
Ballasted:	15,260 lbs 6921 kg

1066 Serial Numbers

1066 Serial Numbers Location: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

how to read serial numbers...