International Harvester 706 Specs ( 1963-1967 )
Overview
The International Harvester 706 is a farm tractor produced between 1963 and 1967 with 4,884 units built. It features multiple engine options including diesel, gasoline, and LP gas, with Nebraska Test 957 recording a maximum PTO power of 76.56 hp. The platform utilizes either an 8-speed sliding gear or a 16-speed Torque Amplifier transmission and was available in row-crop, industrial, and high-clear variants.
Ideal Applications
Tested Power Performance:
Nebraska Tractor Test data for the 310 diesel and 291 gas engines shows maximum drawbar pulls of 8,416 lbs and 8,387 lbs respectively, with maximum tested PTO power reaching up to 76.56 hp.
Transmission and Drive Configuration:
The mechanical layout includes a two-lever 8-speed or 16-speed transmission system with a 12-inch dry disc clutch, requiring a full stop and clutch engagement to change between high, low, or reverse ranges.
Hydraulic System Capacity:
The open-center hydraulic system is equipped with one or two valves and provides a total flow of 24 gpm, split between 12 gpm for the pump and 9 gpm for steering operations.
Production
| Description | Standard-tread tractor / Original price was $6,100 in 1967 |
|---|---|
| Manufacturer | International Harvester |
| Total built | 4,884 |
Engine
| Bore/Stroke | 3.6875x4.3906 inches (94 x 112 mm) / 3.875x4.375 inches (98 x 111 mm) / 3.5625x4.3906 inches (90 x 112 mm) / 3.75x4.39 inches (95 x 112 mm) |
|---|---|
| Compression | 7.5:1 |
| Coolant capacity | 21.5 qts (20.3 L) / 20.5 qts (gas) (19.4 L) |
| Description | International Harvester D282 / diesel / 6-cylinder / liquid-cooled / The 282 was the original diesel available for the 706. It was later replaced by the German-built 310 diesel. / International Harvester D310 / diesel / 6-cylinder / liquid-cooled / The 310 replaced the 282 diesel in November 1966, serial number 37237. / International Harvester C263 / gasoline / 6-cylinder / liquid-cooled / The 263 was also available as an LP gas engine. / Interntional Harvester C291 / gasoline / 6-cylinder / liquid-cooled / The 291 was also available as an LP gas engine. |
| Displacement | 282 ci (4.6 L) / 310 ci (5.1 L) / 263 ci (4.3 L) / 291 ci (4.8 L) |
| Exhaust valve clearance | 0.027 inches (hot) (0.686 mm) / 0.027 inches (hot) (0.686 mm) |
| Firing order | 1-5-3-6-2-4 |
| Intake valve clearance | 0.027 inches (hot) (0.686 mm) / 0.027 inches (hot) (0.686 mm) |
| Point gap | 0.020 inches (0.508 mm) |
| Rated RPM | 2300 / 2300 / 2300 / 2300 |
| Sparkplug gap | 0.023 inches (gas) (0.584 mm) |
| Oil capacity | 9 qts (8.5 L) / 9 qts (8.5 L) |
| Engine type | 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 |
| Engine type | 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 |
| Drawbar (tested) | 67.46 hp (50.3 kW) |
| PTO (tested) | 76.56 hp (57.1 kW) |
Transmission
| Clutch | 12-inch dry disc / 12-inch dry disc |
|---|---|
| Description | 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. |
| Gears | 8 forward and 4 reverse / 16 forward and 8 reverse |
| Oil capacity | 68 qts (64.4 L) / 68 qts (64.4 L) |
| Oil type | IH Hy-Tran / IH Hy-Tran |
| Transmission | sliding gear / Torque Amplifier |
| Transmission type | 8-speed / 16-speed |
| Transmission type | 8-speed / 16-speed |
Mechanical
| Cab | Cab optional, A/C available starting in 1966 |
|---|---|
| Description | Power steering / Hydraulic disc brakes |
| Drive | 4x2 2WD |
Capacity
| Fuel | 33 gal (gas/diesel) (124.9 L) |
|---|---|
| Hydraulic system | 17 gal (64.3 L) |
Hydraulics
| Capacity | 17 gal (64.3 L) |
|---|---|
| Pump flow | 12 gpm (45.4 lpm) |
| Steering flow | 9 gpm (34.1 lpm) |
| Total flow | 24 gpm (90.8 lpm) |
| Type | open center |
| Valves | 1 or 2 |
Hitch
| Control | torsion bar (optional) |
|---|---|
| Rear Type | II/I |
| Type | IH Fast Hitch |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540/1000 |
Electrical
| Batteries | 1 (gas) |
|---|---|
| Battery volts | 12 (gas) |
| Charging amps | 25 (generator) |
| Ground | negative |
Dimensions & Tires
| Clearance (drawbar) | 12 inches (30 cm) |
|---|---|
| Clearance (front axle) | 13 inches (4WD) (33 cm) |
| Front tread | 53 inches (fixed) (134 cm) / 56/69/80 inches (adjustable) (142/175/203 cm) |
| Height (steering wheel) | 80 inches (2WD) (203 cm) |
| Length | 149 inches (2WD) (378 cm) |
| Rear axle | 3.25 inch diameter (82 mm) |
| Rear tread | 60 to 84 inches (152 to 213 cm) |
| Wheelbase | 87.5 inches (2WD) (222 cm) |
| Width | 80 inches (min) (203 cm) |
| Front tire | 7.50-18 |
| Rear tire | 18.4-30 |
| Weight | 8100 to 9160 pounds |
| Wheelbase | 87.5 inches (2WD) (222 cm) |
| Ag front | 7.50-18 (2WD) |
| Ag rear | 18.4-30 |
706 Serial Number Location
| Description | Tractor's clutch housing on left side |
|---|
706 Serial Numbers
| 1963 | 501 (IH) |
|---|---|
| 1964 | 1251 (IH) |
| 1965 | 3478 (IH) |
| 1966 | 4789 (IH) |
| 1967 | 5316 (IH) |
| Description | FAQ: How to read a serial number table. |
Belt Pulley
| Diameter | 11 inches (27 cm) |
|---|---|
| RPM | 1055 |
| Speed | 3,038 ft/min (925.98 meters/min) |
| Width | 7.5 inches (19 cm) |
International Harvester 706 Weight
| Ballasted | 10,710 lbs (4858 kg) |
|---|---|
| Operating | 8,285 lbs (263 gas) (3758 kg) |
| Shipping | 8,100 lbs (gas) (3674 kg) |
Nebraska Tractor Test 856
| Description | 282 diesel Torque Amplifier 2WDOctober 21 - November 8, 1963Link: Nebraska Tractor Test 856 file / PTO performance / Drawbar performance / Gear 2-High-TA used for power test. / Gear 3-Low-TA used for pull test. |
|---|---|
| Fuel use | 5.5 gal/hour (20.8 l/hour) / 5.1 gal/hour (19.3 l/hour) / 5.4 gal/hour (20.4 l/hour) |
| Max power | 65.12 hp (48.6 kW) |
| Max pull | 8,026 lbs (3640 kg) |
| Power at rated engine speed | 72.42 hp (54.0 kW) |
| Power at rated PTO speed | 67.26 hp (50.2 kW) |
Nebraska Tractor Test 858
| Description | 263 gasoline Torque Amplifier 2WDOctober 30 - November 20, 1963Link: Nebraska Tractor Test 858 file / PTO performance / Drawbar performance / Gear 2-High-TA used for power test. / Gear 3-Low-TA used for pull test. |
|---|---|
| Fuel use | 5.7 gal/hour (21.6 l/hour) / 5.2 gal/hour (19.7 l/hour) / 5.9 gal/hour (22.3 l/hour) |
| Max power | 66.18 hp (49.4 kW) |
| Max pull | 7,976 lbs (3617 kg) |
| Power at rated engine speed | 73.82 hp (55.0 kW) |
| Power at rated PTO speed | 68.77 hp (51.3 kW) |
Nebraska Tractor Test 955
| Description | 310 diesel Torque Amplifier 2WDNovember 14 - 28, 1966Link: Nebraska Tractor Test 955 file / PTO performance / Drawbar performance / Gear 1-High-Direct used for power test. / Gear 3-Low-TA used for pull test. |
|---|---|
| Fuel use | 5.0 gal/hour (18.9 l/hour) / 4.7 gal/hour (17.8 l/hour) / 5.0 gal/hour (18.9 l/hour) |
| Max power | 67.46 hp (50.3 kW) |
| Max pull | 8,416 lbs (3817 kg) |
| Power at rated engine speed | 76.09 hp (56.7 kW) |
| Power at rated PTO speed | 71.84 hp (53.6 kW) |
Nebraska Tractor Test 956
| Description | 291 LP gas Torque Amplifier 2WDNovember 14 - 28, 1966Link: Nebraska Tractor Test 956 file / PTO performance / Drawbar performance / Gear 1-High-Direct used for power test. / Gear 3-Lo-TA used for pull test. |
|---|---|
| Fuel use | 8.4 gal/hour (31.8 l/hour) / 7.6 gal/hour (28.8 l/hour) / 8.3 gal/hour (31.4 l/hour) |
| Max power | 66.53 hp (49.6 kW) |
| Max pull | 8,387 lbs (3804 kg) |
| Power at rated engine speed | 76.3 hp (56.9 kW) |
| Power at rated PTO speed | 70.98 hp (52.9 kW) |
Nebraska Tractor Test 957
| Description | 291 gas Torque Amplifier 2WDNovember 16 - 28, 1966Link: Nebraska Tractor Test 957 file / PTO performance / Drawbar performance / Gear 1-High-DD used for power test. / Gear 3-Low-TA used for pull test. |
|---|---|
| Fuel use | 6.3 gal/hour (23.8 l/hour) / 5.8 gal/hour (22.0 l/hour) / 6.3 gal/hour (23.8 l/hour) |
| Max power | 65.67 hp (49.0 kW) |
| Max pull | 8,387 lbs (3804 kg) |
| Power at rated engine speed | 76.56 hp (57.1 kW) |
| Power at rated PTO speed | 71.8 hp (53.5 kW) |
References
| Description | 706-806 Tractors published by International Harvester / Operator's Manual McCormick Farmall and International 706 Tractors (1014498R3) published in 1965 |
|---|
Speeds
| Description | With 18.4-30 rear tires. / With 18.4-30 rear tires. |
|---|
Tractor Tests
| Description | 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 |
|---|
Variants
| 706 Hi-Clear | high-crop |
|---|---|
| Farmall 706 | row-crop |
| IH 2706 | industrial |
| IH 706 | standard-tread |