International Harvester

International Harvester 1256

The International Harvester 1256 is a standard-tread tractor produced from 1967 to 1969. It was built in Rock Island, Illinois, USA, and originally priced at $10,700 in 1969. The tractor features a turbocharged 6-cylinder 6.7L diesel engine, with a power output of approximately 111.6 to 125.6 hp (estimated). It offers two transmission options: an 8-speed gear and a 16-speed partial power shift with Torque Amplifier. The 1256 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. Hydraulics are open center with 1 valve and 8 gpm pump flow. The tractor hitch is category III/II with an independent 1000 RPM rear PTO. Dimensions vary slightly between Farmall and International versions, with wheelbases of 105 inches and 92 inches respectively. Weight ranges from 9940 to 11030 pounds. Electrical system includes a 55 amp alternator and two 6-volt batteries. The 1256 is related to models 1456, 856, and 1206.

Power125 hp[P]

Founded1967 - 1969

Model1256

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Technical Specifications

Detailed specifications and technical data for International Harvester 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)

Variants

IH 1256	standard
Farmall 1256	row-crop

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
Built in	Rock Island, Illinois, USA
Manufacturer	International Harvester
Original price	$10,700 in 1969

Transmission

Type	gear
Gears	8 forward and 4 reverse
Description	The 1256's transmission provides four gears (1-4) in high, low, and reverse ranges.
Oil capacity	68 qts (64.4 L)
Torque Amplifier	Typepartial power shift Gears16 forward and 8 reverse DescriptionFour 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 capacity68 qts (64.4 L)
Transmission options	8-speed gear, 16-speed partial power shift

Tractor hitch

Rear Type	III/II

Serial Numbers

1967 IH	7501
1968 IH	7703
1969 IH	8444
Location	Serial number place on the left side of the 1256, on the clutch housing.
1967 Farmall	7501
1968 Farmall	8849
1969 Farmall	13140

Dimensions & Tires

Width	92 inches (233 cm)
Length	164 inches (416 cm)
Weight	9940 to 11030 pounds
Rear tire	18.4-38 (Farmall), 24.5-32 (International)
Wheelbase	105 inches (Farmall) (266 cm), 92 inches (International) (233 cm)
Front tire	10.00-16 (Farmall), 11.00-16 (International)
Shipping weight	9940 lbs (Farmall) (4508 kg), 11030 lbs (International) (5003 kg)
Ballasted weight	13810 lbs (6264 kg)
Operating weight	10405 lbs (4719 kg)
Height (steering wheel)	86 inches (218 cm)