1971 - 1976 |
66 Series |
Row-Crop tractor |
Series: | Hydro 100 ← | 1066 | → 1466 |
1086 ↓ |
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 | |
1066 Hi-Clear: | high-crop |
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 ... |
International Harvester 1066 Engine | |
International Harvester 6.8L 6-cyl diesel | |
Fuel tank: | 42 gal 159.0 L |
Engine details ... |
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 ... |
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 | |
Rear Type: | III/II |
Rear lift (at 24"/610mm): | 5600 lbs 2540 kg |
Power Take-off (PTO) | |
Rear PTO: | independent |
Rear RPM: | 540/1000 |
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 ... |
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... |
1971 - 1976 |
66 Series |
Row-Crop tractor |
Series: | 1066 ← | 1466 | → 1468 |
1486 ↓ |
Nebraska Tractor Test 1080 | |||
|
Nebraska Tractor Test 1080 | |
2400rpm diesel TA 2WD October 2 - 19, 1971 Link: Nebraska Tractor Test 1080 file | |
PTO performance | |
Power at rated engine speed: | 133.4 hp 99.5 kW |
Fuel use: | 8.4 gal/hour 31.8 l/hour |
Power at rated PTO speed: | 125.17 hp 93.3 kW |
Fuel use: | 7.4 gal/hour 28.0 l/hour |
Drawbar performance | |
Max power: | 115.74 hp 86.3 kW |
Fuel use: | 8.3 gal/hour 31.4 l/hour |
Gear 1-Hi-TA used for power test. | |
Max pull: | 13,165 lbs 5971 kg |
Gear 3-Lo-TA used for pull test. |
Nebraska Tractor Test 1125 | |||
|
Nebraska Tractor Test 1125 | |
2600rpm diesel TA 2WD April 17 - 27, 1973 Link: Nebraska Tractor Test 1125 file | |
PTO performance | |
Power at rated engine speed: | 145.77 hp 108.7 kW |
Fuel use: | 9.6 gal/hour 36.3 l/hour |
Power at rated PTO speed: | 145.85 hp 108.8 kW |
Fuel use: | 8.6 gal/hour 32.6 l/hour |
Drawbar performance | |
Max power: | 123.20 hp 91.9 kW |
Fuel use: | 9.5 gal/hour 36.0 l/hour |
Gear 1-Hi-TA used for power test. | |
Max pull: | 13,673 lbs 6202 kg |
Gear 3-Lo-TA used for pull test. |
1971 - 1976 |
66 Series |
Row-Crop tractor |
Series: | 1066 ← | 1466 | → 1468 |
1486 ↓ |
Engine Detail | |
International Harvester DT-436 | |
turbocharged diesel | |
6-cylinder | |
liquid-cooled | |
Displacement: | 436 ci 7.1 L |
Bore/Stroke: | 4.30x5.00 inches 109 x 127 mm |
Air cleaner: | dual dry elements |
Rated RPM: | 2400 (early) |
2600 (late) | |
Starter volts: | 12 |
Oil capacity: | 18 qts 17.0 L |
Coolant capacity: | 27 qts 25.6 L |
1971 - 1976 |
66 Series |
Row-Crop tractor |
Series: | 1066 ← | 1466 | → 1468 |
1486 ↓ |
Transmissions overview | |
8-speed | |
16-speed |
Transmission | |
Transmission: | gear |
Gears: | 8 forward and 4 reverse |
Oil capacity: | 88 qts 83.3 L |
Four gears each in high, low, and reverse ranges. |
Speeds | |
With 18.4-38 rear tires. | |
Transmission | |
Transmission: | Torque Amplifier |
Gears: | 16 forward and 8 reverse |
Oil capacity: | 88 qts 83.3 L |
The Torque Amplifier (TA) provides a power shift in all gears and ranges from direct drive (DD) to a lower TA speed. Without clutching the TA lever is pulled to the rear to engage. The transmission is returned to direct drive by pushing the TA lever forward. |
Speeds | |
With 18.4-38 rear tires. | |
1971 - 1976 |
66 Series |
Row-Crop tractor |
Series: | 1066 ← | 1466 | → 1468 |
1486 ↓ |
International Harvester 1466 Tires | |
Ag front: | 11L-15 |
Ag rear: | 18.4-38 |
Dimensions | |
Wheelbase: | 105 inches 266 cm |
Length: | 168 inches 426 cm |
Width: | 98 inches 248 cm |
Height (exhaust): | 111 inches 281 cm |
Operating weight: | 13,480 lbs 6114 kg (with cab) |
Ballasted weight: | 16,660 lbs 7556 kg |
Clearance (drawbar): | 16 inches 40 cm |