Introduction
Farmall 706 Row-Crop Tractor
The Farmall 706 is a row-crop tractor manufactured by International Harvester in Rock Island, Illinois, between 1963 and 1967. Designed as a versatile workhorse, it was offered with both two-wheel and four-wheel drive configurations to meet various agricultural requirements.
Engine Specifications
The tractor is equipped with the International Harvester C291 liquid-cooled, 6-cylinder gasoline engine, displacing 291 cubic inches (4.8 liters). It operates at a rated speed of 2300 RPM with a compression ratio of 7.5:1. The engine was also available in an LP gas configuration.
Transmission and Drivetrain
Two transmission options were provided. The standard 8-speed sliding gear transmission uses a two-lever control system. Alternatively, the Torque Amplifier (TA) transmission offers 16 forward and 8 reverse speeds. The TA is a hydraulically-actuated under-drive system allowing for on-the-move shifting to increase pulling power without the need to engage the main clutch.
Hydraulics and PTO
The hydraulic system is an open-center type with a standard pump flow of 12 GPM (45.4 lpm), which could be increased to 17 GPM (64.3 lpm) as an option. The independent rear PTO provides dual speeds of 540 and 1000 RPM, both selectable at the rated engine speed of 2100 RPM.
Operator Environment and Mechanics
Standard mechanical features include power steering and hydraulic dry double-disc brakes. A cab was offered as an optional feature, with air conditioning availability beginning in 1966. The tractor utilizes either a standard 3-point hitch or the proprietary IH Fast Hitch system.
Conclusion
With a power output of 89 hp and multiple configuration options, the Farmall 706 was designed for general row-crop applications. Its combination of a high-torque engine and the flexible Torque Amplifier transmission made it a durable and adaptable choice for mid-to-large scale farming operations during the 1960s.
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Production Information of Farmall, 706
- Original price was $6,100 in 1967
- Row-Crop tractor
- The 706 was available with a new Torque Amplifier design that prevented free-wheeling when going downhill. An over-center hand clutch was an option, usually found on Wheatland (standard tread) models. The 706 was available with either the Fast Hitch or a standard 3-point hitch. The PTO featured both 540 and 1000 RPM shafts, both of which turned while in use.
- Built in Rock Island, Illinois, USA
| Manufacturer | Farmall (a part of International Harvester) |
|---|---|
| Total built | 45,053 |
Dimension and Tires Information of Farmall, 706
| 2WD Wheelbase | 97.5 inches [247 cm] |
|---|---|
| Rear tread | 56 to 96 inches [142 to 243 cm (PAVT)] |
| Rear tread | 56 to 94 inches [142 to 238 cm] |
| 4WD Length | 161 inches [408 cm] |
| 4WD Height (steering wheel) | 81.5 inches [207 cm] |
| 2WD Length | 157 inches [398 cm] |
| 2WD Clearance (drawbar) | 13 inches [33 cm] |
| 2WD Clearance (front axle) | 21 inches [53 cm] |
| Width | 92 inches (min) [233 cm] |
| 4WD Wheelbase | 94.75 inches [240 cm] |
| 2WD Height (steering wheel) | 80 inches [203 cm] |
| Ground clearance | 17 inches [43 cm] |
| Ground clearance(optional) | 110 inches (max) [279 cm] |
| Front tread | 56 to 80 inches [142 to 203 cm] |
| Front tread | 50 to 74 inches [127 to 187 cm] |
| Front tread | 8/16 inches [20/40 cm (tricycle)] |
| 2WD Ag front | 6.50-16 |
|---|---|
| 4WD Ag front | 11.2-24 |
| Ag rear | 15.5-38 |
Engine Specifications of Farmall, 706
- Interntional Harvester C291
- Liquid-cooled
- The 291 was also available as an LP gas engine.
- Gasoline
- 6-cylinder
| Sparkplug gap | 0.023 inches (gas) [0.584 mm] |
|---|---|
| Compression | 7.5:1 |
| Point gap | 0.020 inches [0.508 mm] |
| Rated RPM | 2300 |
| Idle RPM | 900-2300 |
| Rated RPM | 2300 |
| Bore/Stroke | 3.75x4.39 inches [95 x 112 mm] |
| Displacement | 291 ci [4.8 L] |
| Displacement(optional) | 21 qts (LP gas) [19.9 L] |
| Intake valve clearance | 0.027 inches (hot) [0.686 mm] |
| Exhaust valve clearance | 0.027 inches (hot) [0.686 mm] |
| Coolant capacity | 20.5 qts (gas) [19.4 L] |
| Starter volts | 12 |
Transmission Information of Farmall, 706
Transmission variants 1
- The 706 transmission is controlled by means of two levers. A range lever selects high, low, reverse range, or neutral. A separate speed lever selects one of four speeds. The tractor must be stopped, and the clutch used, to change range or speed gears.
| Transmission | Sliding gear |
|---|---|
| Oil type | IH Hy-Tran |
| Oil capacity | 68 qts [64.4 L] |
| Gears | 8 forward and 4 reverse |
| Gears(optional) | IH Hy-Tran |
| Clutch | 12-inch dry disc |
Transmission variants 2
- The Torque Amplifier (TA) provides a hydraulically-actuted under-drive that may be shifted, on the move, with any range and speed selection in the main transmission. Using the TA does not require the clutch or stopping the tractor. With the lever in the forward position, the TA is disengaged and the transmission is in direct drive. To slow the tractor (increasing pulling power) the TA lever should be pulled smoothly and quickly to the rear, engaging the TA. To disengage the TA and return to direct-drive, the TA should be moved forward, with a slight pause at the center position of the lever.
| Transmission | Torque Amplifier |
|---|---|
| Oil type | IH Hy-Tran |
| Oil capacity | 68 qts [64.4 L] |
| Gears | 16 forward and 8 reverse |
| Gears(optional) | IH Hy-Tran |
| Clutch | 12-inch dry disc |
- 8-speed
- 16-speed
Mechanical Specs of Farmall, 706
- Two- or four-wheel drive
- Cab optional, A/C available starting in 1966
- Power steering
- Hydraulic dry double disc brakes
Power Information of Farmall, 706
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@2100 |
| Engine RPM | 540@2100 |
| Rear PTO Type | 540/1000 |
| Rear PTO Type(optional) | 1000 |
Hydraulics Specifications of Farmall, 706
| Steering flow | 9 gpm [34.1 lpm] |
|---|---|
| Type | Open center |
| Type(optional) | 17 gpm (optional) [64.3 lpm] |
| Pump flow | 12 gpm [45.4 lpm] |
| Capacity | 17 gal [64.3 L] |
| Capacity(optional) | 3 gpm (PTO pump) [11.4 lpm] |
| Valves | 1 or 2 |
Three-Point Hitch of Farmall, 706
| Rear Type | 2 |
|---|---|
| Type | IH Fast Hitch |
Electrical System of Farmall, 706
| Ground | Negative |
|---|---|
| Ground(optional) | 2 (diesel) |
| Batteries | 1 (gas) |
| Charging amps | 25 (generator) |
| Battery AH | 60 (gas/LP) |
| Battery volts | 12 (gas) |
| Battery volts(optional) | 32 (alternator) |
| Battery volts(optional) | 130 (diesel) |
Where it sits
With 89 HP, the Farmall 706 sits between 756 (85 HP) and 806 (110 HP) in Farmall's range. Its power puts it in the 81th percentile of 1960s models in our database (709 machines).
Frequently asked questions
How much horsepower does the Farmall 706 have?
The Farmall 706 delivers 89 HP.
What years was the Farmall 706 produced?
The Farmall 706 was produced in 1963-1967.
What engine does the Farmall 706 have?
The Farmall 706 is powered by a The 291 was also available as an LP gas engine., 6-cylinder engine.
What transmission does the Farmall 706 use?
The Farmall 706 uses a Sliding gear transmission.
Is the Farmall 706 4WD?
The Farmall 706 is available in 2WD/4WD.