| Manufacturer |
Farmall |
| Price |
10,700(USD) |
| Model |
1256 |
| Equipment Type |
Standard-Tread Tractors |
| Factory |
Rock Island, Illinois, USA |
NEBRASKA TRACTOR TEST 971 2
| Description |
Diesel Torque Amplifier 2WD April 15 - 30, 1968 Link: Nebraska Tractor Test 971 file PTO performance Drawbar performance Gear 1H-TA used for power test. Gear 3L-TA used for pull test |
| Power at rated engine speed |
116.12hp / 86.6kW |
| Fuel use |
7.6gal/hour / 28.8l/hour |
| Power at rated PTO speed |
113.33hp / 84.5kW |
| Max power |
102.03hp / 76.1kW |
| Max pull |
11,104lbs / 5036kg |
FARMALL 1256 POWER
| PTO (claimed) |
113hp / 84.3kW |
| Drawbar (tested) |
102.03hp / 76.1kW |
| PTO (tested) |
116.12hp / 86.6kW |
ENGINE DETAIL
The Farmall 1256 is powered by the robust International Harvester DT407 turbocharged diesel engine, offering strong torque at lower RPMs due to its 17:1 compression ratio, which is ideal for heavy-duty agricultural tasks. Its 6.7L displacement and dual dry air cleaners enhance performance, but the complexity of turbocharging may require more frequent maintenance. With a coolant capacity of 24 quarts, adequate thermal management is crucial for prolonged operation, especially in intensive farming scenarios.
| Description |
International Harvester DT407 turbocharged diesel 6-cylinder liquid-cooled |
| Displacement |
406.9ci / 6.7L |
| Bore/Stroke |
4.321x4.625inches / 110x 117 mm |
| Air cleaner |
dual dry elements |
| Compression |
17:1 |
| Rated RPM |
2400 |
| Starter volts |
12 |
| Oil capacity |
15qts / 14.2L |
| Coolant capacity |
24qts / 22.7L |
FARMALL 1256 ENGINE
The Farmall 1256 features a robust International Harvester 6.7L 6-cylinder diesel engine, which provides strong torque for demanding agricultural tasks. Its 42-gallon fuel tank ensures extended operational range, reducing downtime for refueling during long work hours. However, the tractor's weight and size may challenge maneuverability in tighter fields, so adequate planning for field conditions is crucial.
| Description |
International Harvester 6.7L 6-cyl diesel |
| Fuel tank |
42gal / 159.0L |
TRANSMISSIONS OVERVIEW
The Farmall 1256 features an 8-speed gearbox complemented by a 16-speed partial power shift, offering versatility in various field operations. This allows for smoother transition between speeds, enhancing performance in different load conditions. However, the complexity of the shifting system may require greater operator training to maximize efficiency and prevent potential mechanical issues.
| Description |
8-speed gear 16-speed partial power shift |
TRANSMISSION 1
The Farmall 1256 features a gear transmission with 8 forward and 4 reverse speeds, allowing for versatile operation across varied field conditions. With an oil capacity of 68 quarts (64.4L), ensure proper lubrication for optimal performance and longevity. The multi-range transmission enhances efficiency in tasks such as plowing or hauling, but may require operator training to effectively utilize all gear options.
| Type |
gear |
| Gears |
8 forward and 4 reverse |
| Oil capacity |
68qts / 64.4L |
| Description |
The 1256's transmission provides four gears (1-4) in high, low, and reverse ranges. |
SPEEDS 1
| Description |
With 18.4-38 rear tires |
TRANSMISSION 2
The Farmall 1256's partial power shift transmission featuring a Torque Amplifier (TA) enhances operational flexibility by enabling smooth, clutchless downshifting, particularly beneficial in varying load conditions. With 16 forward and 8 reverse gears, it offers a substantial range for speed and torque management, making it suitable for diverse farming tasks. However, operators must be aware that reliance on the TA may require maintenance attention to ensure optimal performance and longevity.
| Transmission |
Torque Amplifier |
| Type |
partial power shift |
| Gears |
16 forward and 8 reverse |
| Oil capacity |
68qts / 64.4L |
| Description |
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. |
SPEEDS 2
| Description |
With 18.4-38 rear tires |
MECHANICAL
The Farmall 1256 features a robust chassis design offering both 2WD and 4WD options, enhancing maneuverability and traction in diverse farm conditions. It is equipped with an independent hydraulic dry disc braking system, providing precise stopping power, although maintenance may be more challenging compared to wet disc systems. The optional cab with heating and air-conditioning increases operator comfort, making it suitable for extended fieldwork in varying climates, while the 16-speed partial power shift transmission allows for efficient power management across a range of applications.
| Chassis |
4x2 2WD/4x4 MFWD 4WD |
| Steering |
power |
| Brakes |
independent hydraulic dry disc |
| Cab |
Open operator station. Two-post ROPS optional. Cab optional with heat and air-conditioning. |
| Transmissions |
8-speed gear/16-speed partial power shift |
HYDRAULICS
| Type |
open center |
| Valves |
1 |
| Pump flow |
8 gpm /30.3 lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
1000 |
| Engine RPM |
1000@2100 |
FARMALL 1256 TIRES
The Farmall 1256 features standard agricultural tires sized 10.00-16 at the front and 18.4-38 at the rear, offering a good balance of traction and flotation in various field conditions. The alternative tire option (11.00-16 front and 24.5-32 rear) enhances stability and load-bearing capacity, which can be advantageous for heavier implements and more challenging terrains. However, users should consider potential impacts on maneuverability and ground compaction when selecting tire sizes.
| Standard tires (ag) |
Front: 10.00-16. Rear: 18.4-38 (Farmall)/Front: 11.00-16. Rear: 24.5-32 (International) |
DIMENSIONS
| Wheelbase |
105inches / 266cm (Farmall)/92inches / 233cm (International) |
| Length |
164inches / 416cm |
| Width |
92inches / 233cm |
| Height (steering wheel) |
86inches / 218cm |
FARMALL 1256 WEIGHT
| Shipping |
9940lbs / 4508kg (Farmall)/11030lbs / 5003kg (International) |
| Operating |
10405lbs / 4719kg |
| Ballasted |
13810lbs / 6264kg |
DIMENSIONS & TIRES
The Farmall 1256 features a 105-inch wheelbase, providing excellent stability and maneuverability for heavy-duty agricultural tasks, while its weight range (9940 to 11030 pounds) indicates substantial towing and load-bearing capabilities. The front tire size (10.00-16) contributes to better steering control, while the rear tires (18.4-38) offer enhanced traction in various soil conditions. A challenge may arise in tight spaces due to its size; however, this tractor excels in larger fields and heavy implements where power and stability are paramount.
| Wheelbase |
105inches / 266cm (Farmall)/92inches / 233cm (International) |
| Weight |
9940 to 11030 pounds |
| Front tire |
10.00-16 |
| Rear tire |
18.4-38 (Farmall) |
1256 SERIAL NUMBERS
| Location |
Serial number place on the left side of the 1256, on the clutch housing. |
| 1967 |
7501 (IH) |
| 1968 |
7703 (IH) |
| 1969 |
8444 (IH) |
ELECTRICAL
| Charging system |
alternator |
| Charging amps |
55 |
| Batteries |
2 |
| Battery volts |
6 |
| Battery AH |
204 |
