The Farmall 1256 is a standard-tread tractor produced from 1967 to 1969 as part of the 56 Series by Farmall, a division of International Harvester. It was built in Rock Island, Illinois, USA. The tractor features an International Harvester DT407 turbocharged 6-cylinder diesel engine with 6.7L displacement, delivering an estimated 125.6 hp. It offers two transmission options: an 8-speed gear and a 16-speed partial power shift with Torque Amplifier. The tractor supports two- or four-wheel drive, power steering, and independent hydraulic dry disc brakes. The operator station is open with optional two-post ROPS or cab with heat and air-conditioning. It has an open center hydraulic system with 8 gpm pump flow and a rear hitch of type III/II. The rear PTO is independent with a 1000 RPM type. Dimensions include a 105-inch wheelbase (Farmall), 164-inch length, and 92-inch width. Weight ranges from 9940 to 11030 pounds depending on configuration. Electrical system includes a 55 amp alternator and two 6-volt batteries. The 1256 is related to the Farmall 1456 and 1206 models.
Detailed specifications and technical data for Farmall 1256
Power
PTO (tested):116.12 hp (86.6 kW)
PTO (claimed):113 hp (84.3 kW)
Drawbar (tested):102.03 hp (76.1 kW)
Engine
Type:turbocharged diesel
Model:International Harvester DT407
Cooling:liquid-cooled
Cylinders:6-cylinder
Fuel tank:42 gal (159.0 L)
Rated RPM:2400
Air cleaner:dual dry elements
Bore/Stroke:4.321x4.625 inches (110 x 117 mm)
Compression:17:1
Displacement:406.9 ci (6.7 L)
Oil capacity:15 qts (14.2 L)
Starter volts:12
Coolant capacity:24 qts (22.7 L)
Electrical
Batteries:2
Battery AH:204
Battery volts:6
Charging amps:55
Charging system:alternator
Hydraulics
Type:open center
Valves:1
Pump flow:8 gpm (30.3 lpm)
Mechanical
Drive:Two- or four-wheel drive
Brakes:Independent hydraulic dry disc brakes
Steering:Power steering
Operator station:Open operator station. Two-post ROPS optional. Cab optional with heat and air-conditioning.
Production
Type:Standard-tread tractor
Series:56 Series
Built in:Rock Island, Illinois, USA
Years made:1967 - 1969
Original price:$10,700 in 1969
Transmission
Options:8-speed gear, 16-speed partial power shift
Type (gear):gear
Gears (gear):8 forward and 4 reverse
Description (gear):The 1256's transmission provides four gears (1-4) in high, low, and reverse ranges.
Oil capacity (gear):68 qts (64.4 L)
Type (partial power shift):partial power shift
Gears (partial power shift):16 forward and 8 reverse
Description (partial power shift):Four gears (1-4) in two ranges (low/high) plus reverse range. The Torque Amplifier (TA) allows a clutchless shift from direct drive (DD) to the lower TA speed in all gears and ranges.
Oil capacity (partial power shift):68 qts (64.4 L)