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International Harvester 1256 Technical Data

International Harvester 1256 Engine Specifications

Engine Model ................. International Harvester DT407
Engine Type ................. 4-stroke, six-cylinder turbocharged diesel
Number of Cylinders ................. 6
Displacement, cu in (L) ................. 406.9 (6.70)
Engine Bore, in (mm) ................. 4.32 (110.0)
Engine Stroke, in (mm) ................. 4.63 (117.0)
Aspiration ................. Turbocharged
Rated Engine Power, hp (kW) ................. 125.0 (92.6)
Rated Engine Speed, rpm ................. 2400
Idle Speed, rpm ................. 900-2400
Compression ................. 17:1
Firing Order ................. 1-5-3-6-2-4
Fuel System ................. Direct injection
Air Cleaner ................. Dual dry
Fuel Tank Capacity, gal (L) ................. 42.0 (159.0)
Oil Capacity, qts (L) ................. 15.0 (14.2)
Coolant Capacity, qts (L) ................. 24.0 (22.7)
Electrical System Rating, Volts ................. 12

IH 1256 Power Take-Off

PTO Operational Type ................. Independent
PTO Horsepower, hp (kW) ................. 113.0 (84.3)
PTO Clutch ................. Dry disc
PTO Speeds, rpm ................. 1000
PTO / Engine Speed, rpm ................. 1000/2100

Transmission Configuration

Transmission Type ................. Unsynchronized gear
Gearbox Type ................. 8F/4R
Number of Forward Gears ................. 8
Number of Reverse Gears ................. 4
Clutch ................. Dry disc
Oil Capacity, qts (L) ................. 68.0 (64.3)
Maximum Forward Speed, mph (kph) ................. 19.5 (31.4)
Maximum Reverse Speed, mph (kph) ................. 9.5 (15.3)

Transmission Type ................. Torque Amplifier
Gearbox Type ................. 16F/8R, partial powershift
Number of Forward Gears ................. 16
Number of Reverse Gears ................. 8
Clutch Type ................. Dry disc
Oil Capacity, qts (L) ................. 68.0 (64.3)
Maximum Forward Speed, mph (kph) ................. 19.5 (31.4)
Maximum Reverse Speed, mph (kph) ................. 9.5 (15.3)

International Harvester 1256 Wheels and Tires

Drive Wheels ................. 2WD/4WD
Steering Configuration ................. Front Steer
Steering System ................. Hydrostatic power
Brakes Type ................. Independent hydraulic dry disc
Front Tire Size ................. 10.0-16
Rear Tire Size ................. 18.4-38
Front Tread, in (mm) ................. 50-74 (1265-1870)
Rear Tread, in (mm) ................. 56-94 (1415-2380)

Hydraulics and Hitch

Hydraulic System Type ................. Open Center
Implement Pump Type ................. Gear
Implement Pump Flow, gpm (Lpm) ................. 8.0 (30.3)
Hydraulic Capacity, gal (L) ................. 16.9 (64.3)
Number of Standard Remote Valves ................. 1
3-Point Hitch Category ................. 3/2

IH 1256 Dimensions and Weight

Wheelbase, in (mm) ................. 105 (2660)
Length, in (mm) ................. 164 (4160)
Height (Steering Wheel), in (mm) ................. 86 (2180)
Overall Width, in (mm) ................. 92 (2330)
Turning Radius, in (mm) ................. 162 (4100)
Weight (Shipping), lb (kg) ................. 9940 (4510)
Weight (Operating), lb (kg) ................. 10405 (4720)
Weight (Ballasted), lb (kg) ................. 13810 (6265)