International Harvester 706

International Harvester 4.6L 6-cyl diesel

Bore × stroke

3.69 in × 4.39 in

Rated speed

2,300 rpm

Cooling

liquid-cooled

Firing order

1-5-3-6-2-4

Notes

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

International Harvester 5.1L 6-cyl diesel

Bore × stroke

3.88 in × 4.38 in

Rated speed

2,300 rpm

Cooling

liquid-cooled

Notes

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

International Harvester 4.3L 6-cyl gasoline

Bore × stroke

3.56 in × 4.39 in

Rated speed

2,300 rpm

Cooling

liquid-cooled

Notes

The 263 was also available as an LP gas engine.

Interntional Harvester 4.8L 6-cyl gasoline

Bore × stroke

3.75 in × 4.39 in

Rated speed

2,300 rpm

Compression

7.5:1

Cooling

liquid-cooled

Notes

The 291 was also available as an LP gas engine.

sliding gear: 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.

Torque Amplifier: 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.