Farmall 666

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3-Point Hitch
Rear type II
Control -
Rear lift -
Front hitch -
Front lift -
Power Take-off (PTO):
Rear PTO independent
Clutch -
Rear RPM 540
Front PTO -
Engine RPM -
Capacity
Fuel -
Dimensions & Tires
Wheelbase 103 inches [261 cm]
Weight 7053 lbs [3199 kg]
Front tire 7.50-16
Rear tire 15.5-38
Farmall 666 Power:
Engine gross -
Engine max -
Mechanical
Chassis 4x2 2WD
Differential lock -
Steering hydrostatic power
Brakes dry disc
Trailer brakes -
Cab Open operator station. Two-post ROPS or canpoy optional.
Hydraulics
Type IH Fast Hitch
Rear valves -
Mid valves -
Pump flow hydrostatic powe
SCV flow -
Total flow -
Electrical
Ground -
Charging system -
Charging amps -
Charging volts -
Battery
Number -
Cold-cranking amps -
Volts 12
Engine Detail
Note: the Farmall model 666 is the same as the International Harvester 666. The following data is from the 666 listing.
International Harvester D312
diesel
6-cylinder
liquid-cooled
312 ci [5.1 L]
Engine specifications
Bore/Stroke 3.875x4.410 inches [98 x 112 mm]
Emissions -
Emission control -
Rated Power -
Maximum Power -
Air cleaner dual stage dry
Pre-heating -
Compression -
Fuel system -
Rated RPM 2000
Operating RPM -
Torque -
Torque RPM -
Starter -
Starter volts 12
Oil capacity -
Oil change -
Coolant capacity -
more Farmall 666 specifications...
Type hydrostatic
Gears 5 forward and 1 reverse
Clutch dry disc
Speeds  
sliding gear
Type partial power shift
Gears infinite forward and reverse
Clutch -
Speeds -
Torque-Amplifier
Type -
Gears 10 forward and 2 reverse
Clutch -
Speeds -
Farmall 666 Tires
Ag front more Farmall 666 specifications...
Ag rear 15.5-38
Standard tires (ag) -
Dimensions
Weight (operating) -
Weight (max capacity) -
Front axle load -
Rear axle load -
Wheelbase 103 inches [261 cm]
Length -
With hitch Length: -
Width -
Height (hood) -
Height (cab) -
Front axle -
Rear axle -
Height (exhaust) -
Clearance (front axle) -
Clearance (rear axle) -
Clearance (drawbar) -
Test name
Test Date more Farmall 666 specifications...
Test Type 312 diesel Torque Amplifier 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 66.29 hp [49.4 kW]
PTO fuel use (engine speed) 4.7 gal/hour [17.8 l/hour]
PTO fuel use (PTO speed) 5.8 gal/hour [22.0 l/hour]
Drawbar power (max) 58.01 hp [43.3 kW]
Drawbar fuel use (max) 4.6 gal/hour [17.4 l/hour]
Drawbar pull (max) 8,012 lbs [3634 kg]
Max pull gear 2-TA
Test name
Test Date November 3 - 14, 1973
Test Type Gasoline Torque Amplifier 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 66.30 hp [49.4 kW]
PTO fuel use (engine speed) 12.0 gal/hour [45.4 l/hour]
PTO fuel use (PTO speed) 5.3 gal/hour [20.1 l/hour]
Drawbar power (max) 57.29 hp [42.7 kW]
Drawbar fuel use (max) 5.7 gal/hour [21.6 l/hour]
Drawbar pull (max) 7,981 lbs [3620 kg]
Max pull gear 2-TA
Test name
Test Date November 5 - December 3, 1973
Test Type Gasoline hydrostatic 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 69.61 hp [51.9 kW]
PTO fuel use (engine speed) 6.9 gal/hour [26.1 l/hour]
PTO fuel use (PTO speed) -
Drawbar power (max) 53.86 hp [40.2 kW]
Drawbar fuel use (max) 7.7 gal/hour [29.1 l/hour]
Drawbar pull (max) 8,427 lbs [3822 kg]
Max pull gear Low - 2.2MPH
Test name
Test Date November 14 - December 3, 1973
Test Type Diesel hydrostatic 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 69.51 hp [51.8 kW]
PTO fuel use (engine speed) 5.6 gal/hour [21.2 l/hour]
PTO fuel use (PTO speed) -
Drawbar power (max) 53.10 hp [39.6 kW]
Drawbar fuel use (max) 5.6 gal/hour [21.2 l/hour]
Drawbar pull (max) 8,310 lbs [3769 kg]
Max pull gear Low - 2.3MPH
Test name
Test Date November 14 - December 3, 1973
Test Type -
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) -
PTO fuel use (engine speed) -
PTO fuel use (PTO speed) -
Drawbar power (max) -
Drawbar fuel use (max) -
Drawbar pull (max) -
Max pull gear -