International Harvester Hydro 100 tractor specifications

1973 - 1976

1973 - 1976 66 SeriesRow-Crop tractor

Series:

Series:966 ← Hydro 100 → 1066Hydro 186 ↓

1971 - 1976

66 Series

Row-Crop tractor

Series:

Series:	966	→ Hydro 100
	986 ↓

Production

Production
Manufacturer:	International Harvester
Type:	Row-Crop tractor
Total built:	21,017
Original price:	$18,000 (1976 )

Variants

Variants
Hi-Clear:	high-crop model

International Harvester 966 Power

International Harvester 966 Power
Engine:	91 hp 67.9 kW
Drawbar (claimed):	84 hp 62.6 kW
PTO (claimed):	95 hp 70.8 kW
Drawbar (tested):	85.21 hp 63.5 kW
PTO (tested):	100.80 hp 75.2 kW
power test details ...

International Harvester 966 Engine

International Harvester 966 Engine
International Harvester 6.8L 6-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
	4x4 MFWD 4WD
Steering:	power
Brakes:	Independent hydraulic dry disc
Cab:	Cab optional with heat and air-conditioning.
Transmissions:	8-speed sliding gear
	16-speed two-speed power shift
	hydrostatic
Transmission details ...

Capacity

Capacity
Fuel:	37 gal 140.0 L
Hydraulic system:	22.5 gal 85.2 L

Hydraulics

Hydraulics
Type:	open center
Capacity:	22.5 gal 85.2 L
Pressure:	2000 psi 137.9 bar
Valves:	1 to 4
Pump flow:	12 gpm 45.4 lpm
Total flow:	24 gpm 90.8 lpm
Steering flow:	9 gpm 34.1 lpm
Steering press.:	1550 psi 106.9 bar

Tractor hitch

Tractor hitch
Rear Type:	II
Rear lift (at 24"/610mm):	4400 lbs 1995 kg
Type:	IH Fast Hitch
Rear lift:	5000 lbs 2268 kg (at 24 inches)

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:	11116 to 11700 pounds
Front tire:	9.5L-15
Rear tire:	18.4-34
Full dimensions and tires ...

966 Serial Numbers

966 Serial Numbers
Location:	Clutch housing, left side
1971:	7101
1972:	11815
1973:	17794
1974:	22526
1975:	28119
1976:	31772
how to read serial numbers...

Electrical

Electrical
Charging amps:	32
Batteries:	2
Battery volts:	6
Battery AH:	172

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 ...

1973 - 1976

66 Series

Row-Crop tractor

Series:

Series:	966 ←	Hydro 100	→ 1066
		Hydro 186 ↓

Nebraska Tractor Test 1158

Nebraska Tractor Test 1158
Diesel hydrostatic 2WD May 7 - 18, 1974 Link: Nebraska Tractor Test 1158 file
PTO performance
Power at rated engine speed:	104.17 hp 77.7 kW
Fuel use:	7.6 gal/hour 28.8 l/hour
Power at rated PTO speed:	101.30 hp 75.5 kW
Fuel use:	6.8 gal/hour 25.7 l/hour
Drawbar performance
Max power:	78.31 hp 58.4 kW
Fuel use:	7.6 gal/hour 28.8 l/hour
Gear 5.5 MPH used for power test.
Max pull:	9,801 lbs 4445 kg
Gear 2.85 MPH used for pull test.

International Harvester Hydro 100 Engine

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

1973 - 1976

66 Series

Row-Crop tractor

Series:

Series:	966 ←	Hydro 100	→ 1066
		Hydro 186 ↓

Engine Detail

Engine Detail
International Harvester
diesel
6-cylinder
liquid-cooled
Displacement:	436 ci 7.1 L
Bore/Stroke:	4.30x5.00 inches 109 x 127 mm
Air cleaner:	dual stage dry
Compression:	15.8:1
Rated RPM:	2400
Starter volts:	12

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 ...