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| info | |
| 1971 - 1976 66 Series, Row-Crop tractor | |
| Next model: | International Harvester 986 |
| Series next: | International Harvester Hydro 100 |
| Production | |
| Manufacturer: | International Harvester |
| Total built: | 21,017 |
| Original price (USD): | $18,000 (1976) |
| Variants | |
| Hi-Clear: | high-crop model |
| Capacity | |
| Fuel: | 37 gal [140.0 L] |
| Hydraulic system: | 22.5 gal [85.2 L] |
| Rear Hitch | |
| Type: | IH Fast Hitch |
| Rear lift: | 5,000 lbs [2268 kg] (at 24 inches) |
| 3-Point Hitch | |
| Rear Type: | 2 |
| Rear lift (at 24"/610mm): | 4,400 lbs [1995 kg] |
| Power Take-off (PTO) | |
| Rear PTO: | independent |
| Rear RPM: | 540/1000 |
| Dimensions & Tires | |
| Wheelbase: | 105 inches [266 cm] |
| Weight: | 11116 to 13500 pounds |
| Front tire: | 9.5L-15 |
| Rear tire: | 18.4-34 |
| 966 Serial Numbers | |
| Location: | Clutch housing, left side |
| 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] |
| Mechanical | |
| Chassis: | 4x2 2WD, 4x4 MFWD 4WD (optional) |
| Steering: | Hydrostatic power |
| Brakes: | Independent hydraulic dry disc |
| Cab: | Cab optional with heat and A/C |
| 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] |
| Electrical | |
| Charging amps: | 32 |
| Battery | |
| Number: | 2 |
| Volts: | 6 |
| Amp-hours: | 172 |
| info | |
| Bore/Stroke: | 4.30x4.75 inches [109 x 121 mm] |
| Power: | 91 hp [67.9 kW] |
| Air cleaner: | dual dry elements |
| Rated RPM: | 2400 (early), 2600 (late) |
| Firing order: | 1-5-3-6-2-4 |
| Oil capacity: | 12 qts [11.4 L] |
| Coolant capacity: | 24 qts [22.7 L] |
| Engine Detail | |
| International Harvester D414, diesel, 6-cylinder, liquid-cooled, 414 ci [6.8 L] |
| info | |
| Speeds: | With 18.4-34 rear tires. |
| Transmission | |
| Transmission: | sliding gear |
| Gears: | 8 forward and 4 reverse |
| Oil capacity: | 90 qts [85.2 L] |
| Four gears each provided in high, low, and reverse ranges. | |
| info | |
| Next model: | International Harvester 986 |
| Series next: | International Harvester Hydro 100 |
| Dimensions | |
| Weight (operating): | 11,116 lbs [5042 kg] (gear), 11,700 lbs [5307 kg] (hydro) |
| Weight (ballasted): | 13,500 lbs [6123 kg] |
| Wheelbase: | 105 inches [266 cm] |
| Length: | 165 inches [419 cm] |
| Width: | 98 inches [248 cm] |
| Height (exhaust): | 105 inches [266 cm] |
| Ground clearance: | 14 inches [35 cm] |
| 2WD turn radius: | 13.3 feet [4.1 m], 11.4 feet [3.5 m] (with brakes) |
| International Harvester 966 Tires | |
| Ag front: | 9.5L-15 |
| Ag rear: | 18.4-34 |