International Harvester 706

1963 - 1967

Standard-tread tractor

Manufacturer

International Harvester

Standard-tread tractor

Total built

4,884

Original price was $6,100 in 1967

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.

Farmall 706

row-crop

IH 706

standard-tread

IH 2706

industrial

706 Hi-Clear

high-crop

Drawbar (tested)

67.46 hp 50.3 kW

PTO (tested)

76.56 hp 57.1 kW

Drive

4x2 2WD

4x4 MFWD 4WD (optional)

Power steering

Hydraulic disc brakes

Cab optional, A/C available starting in 1966

Fuel

33 gal (gas/diesel) 124.9 L

39 gal (LP gas) 147.6 L

Hydraulic system

17 gal 64.3 L

Type

open center

Capacity

17 gal 64.3 L

Valves

1 or 2

Pump flow

12 gpm 45.4 lpm

17 gpm (optional) 64.3 lpm

Total flow

24 gpm 90.8 lpm

Steering flow

9 gpm 34.1 lpm

Rear Type

II/I

Control

torsion bar (optional)

Type

IH Fast Hitch

Rear PTO

independent

Rear PTO Type

540/1000

Wheelbase

87.5 inches (2WD) 222 cm

87 inches (4WD) 220 cm

Weight

8100 to 9160 pounds

Front tire

7.50-18

Rear tire

18.4-30

Diameter

11 inches 27 cm

Width

7.5 inches 19 cm

RPM

1055

Speed

3,038 ft/min 925.98 meters/min

Ground

negative

Charging amps

25 (generator)

32 (alternator)

Batteries

1 (gas)

2 (diesel)

Battery volts

12 (gas)

6 (diesel)

706-806 Tractors published by International Harvester

Operator's Manual McCormick Farmall and International 706 Tractors (1014498R3) published in 1965

International Harvester 4.6L 6-cyl diesel

International Harvester 5.1L 6-cyl diesel

International Harvester 4.3L 6-cyl gasoline

Interntional Harvester 4.8L 6-cyl gasoline

Manufacturer

International Harvester D282

Fuel Type

Diesel

Configuration

6-cylinder, liquid-cooled

The 282 was the original diesel available for the 706. It was later replaced by the German-built 310 diesel.

Displacement

282 ci 4.6 L

Bore/Stroke

3.6875x4.3906 inches 94 x 112 mm

Rated RPM

2300

Firing order

1-5-3-6-2-4

Coolant capacity

21.5 qts 20.3 L

Intake valve clearance

0.027 inches (hot) 0.686 mm

Exhaust valve clearance

0.027 inches (hot) 0.686 mm

Oil capacity

9 qts 8.5 L

Manufacturer

International Harvester D310

Fuel Type

Diesel

Configuration

6-cylinder, liquid-cooled

The 310 replaced the 282 diesel in November 1966, serial number 37237.

Displacement

310 ci 5.1 L

Bore/Stroke

3.875x4.375 inches 98 x 111 mm

Rated RPM

2300

Manufacturer

International Harvester C263

Fuel Type

Gasoline

Configuration

6-cylinder, liquid-cooled

The 263 was also available as an LP gas engine.

Displacement

263 ci 4.3 L

Bore/Stroke

3.5625x4.3906 inches 90 x 112 mm

Rated RPM

2300

Coolant capacity

20.5 qts (gas) 19.4 L

21 qts (LP gas) 19.9 L

Sparkplug gap

0.023 inches (gas) 0.584 mm

0.015 inches (LP) 0.381 mm

Point gap

0.020 inches 0.508 mm

Intake valve clearance

0.027 inches (hot) 0.686 mm

Exhaust valve clearance

0.027 inches (hot) 0.686 mm

Oil capacity

9 qts 8.5 L

Manufacturer

Interntional Harvester C291

Fuel Type

Gasoline

Configuration

6-cylinder, liquid-cooled

The 291 was also available as an LP gas engine.

Displacement

291 ci 4.8 L

Bore/Stroke

3.75x4.39 inches 95 x 112 mm

Compression

7.5:1

Rated RPM

2300

8-speed

16-speed

Transmission

sliding gear

Gears

8 forward and 4 reverse

Clutch

12-inch dry disc

Oil capacity

68 qts 64.4 L

Oil type

IH Hy-Tran

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.

With 18.4-30 rear tires.

Transmission

Torque Amplifier

Gears

16 forward and 8 reverse

Clutch

12-inch dry disc

Oil capacity

68 qts 64.4 L

Oil type

IH Hy-Tran

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.

With 18.4-30 rear tires.

Ag front

7.50-18 (2WD)

11.2-24 (4WD)

Ag rear

18.4-30

Wheelbase

87.5 inches (2WD) 222 cm

87 inches (4WD) 220 cm

Length

149 inches (2WD) 378 cm

156 inches (4WD) 396 cm

Width

80 inches (min) 203 cm

103 inches (max) 261 cm

Height (steering wheel)

80 inches (2WD) 203 cm

80.5 inches (4WD) 204 cm

Clearance (front axle)

13 inches (4WD) 33 cm

17 inches (2WD) 43 cm

Clearance (drawbar)

12 inches 30 cm

Rear axle

3.25 inch diameter 82 mm

Front tread

53 inches 134 cm (fixed)

Front tread

56/69/80 inches 142/175/203 cm (adjustable)

Rear tread

60 to 84 inches 152 to 213 cm

Shipping

8,100 lbs (gas) 3674 kg

8,360 lbs (diesel) 3792 kg

Operating

8,285 lbs (263 gas) 3758 kg

8,530 lbs (282 diesel) 3869 kg

8,700 lbs (291 gas) 3946 kg

9,160 lbs (310 diesel) 4154 kg

Ballasted

10,710 lbs 4858 kg

NTTL 856: 282 diesel Torque Amplifier 2WD

NTTL 858: 263 gasoline Torque Amplifier 2WD

NTTL 955: 310 diesel Torque Amplifier 2WD

NTTL 956: 291 LP gas Torque Amplifier 2WD

NTTL 957: 291 gas Torque Amplifier 2WD

282 diesel Torque Amplifier 2WD October 21 - November 8, 1963 Link: Nebraska Tractor Test 856 file

PTO performance

Power at rated engine speed

72.42 hp 54.0 kW

Fuel use

5.5 gal/hour 20.8 l/hour

Power at rated PTO speed

67.26 hp 50.2 kW

Fuel use

5.1 gal/hour 19.3 l/hour

Drawbar performance

Max power

65.12 hp 48.6 kW

Fuel use

5.4 gal/hour 20.4 l/hour

Gear 2-High-TA used for power test.

Max pull

8,026 lbs 3640 kg

Gear 3-Low-TA used for pull test.

263 gasoline Torque Amplifier 2WD October 30 - November 20, 1963 Link: Nebraska Tractor Test 858 file

PTO performance

Power at rated engine speed

73.82 hp 55.0 kW

Fuel use

5.7 gal/hour 21.6 l/hour

Power at rated PTO speed

68.77 hp 51.3 kW

Fuel use

5.2 gal/hour 19.7 l/hour

Drawbar performance

Max power

66.18 hp 49.4 kW

Fuel use

5.9 gal/hour 22.3 l/hour

Gear 2-High-TA used for power test.

Max pull

7,976 lbs 3617 kg

Gear 3-Low-TA used for pull test.

310 diesel Torque Amplifier 2WD November 14 - 28, 1966 Link: Nebraska Tractor Test 955 file

PTO performance

Power at rated engine speed

76.09 hp 56.7 kW

Fuel use

5.0 gal/hour 18.9 l/hour

Power at rated PTO speed

71.84 hp 53.6 kW

Fuel use

4.7 gal/hour 17.8 l/hour

Drawbar performance

Max power

67.46 hp 50.3 kW

Fuel use

5.0 gal/hour 18.9 l/hour

Gear 1-High-Direct used for power test.

Max pull

8,416 lbs 3817 kg

Gear 3-Low-TA used for pull test.

291 LP gas Torque Amplifier 2WD November 14 - 28, 1966 Link: Nebraska Tractor Test 956 file

PTO performance

Power at rated engine speed

76.3 hp 56.9 kW

Fuel use

8.4 gal/hour 31.8 l/hour

Power at rated PTO speed

70.98 hp 52.9 kW

Fuel use

7.6 gal/hour 28.8 l/hour

Drawbar performance

Max power

66.53 hp 49.6 kW

Fuel use

8.3 gal/hour 31.4 l/hour

Gear 1-High-Direct used for power test.

Max pull

8,387 lbs 3804 kg

Gear 3-Lo-TA used for pull test.

291 gas Torque Amplifier 2WD November 16 - 28, 1966 Link: Nebraska Tractor Test 957 file

PTO performance

Power at rated engine speed

76.56 hp 57.1 kW

Fuel use

6.3 gal/hour 23.8 l/hour

Power at rated PTO speed

71.8 hp 53.5 kW

Fuel use

5.8 gal/hour 22.0 l/hour

Drawbar performance

Max power

65.67 hp 49.0 kW

Fuel use

6.3 gal/hour 23.8 l/hour

Gear 1-High-DD used for power test.

Max pull

8,387 lbs 3804 kg

Gear 3-Low-TA used for pull test.