International Harvester Serie
1 model in this series
International Harvester 560 (INTERNATIONAL Line) – six-cylinder tractor with petrol, LPG or diesel engine, 47.8 kW and 292 Nm torque, built from 1958 to 1963.
The INTERNATIONAL line of the years around 1958 to 1963 was part of International Harvester's major model overhaul of that period, when the company reorganised its tractor programme by cylinder count and power. The 560 stood at the top of this line as a six-cylinder model and, as was common among US makers at the time, was offered with a choice of petrol, LPG or diesel engine.
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The 560's water-cooled six-cylinder engine of 4,303 cm3 displacement produces 47.8 kW (65 hp) at 1,800 rpm and 292 Nm of torque. At 3,075 kg, 3,708 mm long and 1,829 mm wide, it is a medium-weight standard tractor on a 2,172 mm wheelbase. Its overall height of 1,803 mm is notably low for a six-cylinder. Top speed is 25 km/h.
Offering petrol, LPG and diesel in the same engine block was a common response in the late-1950s United States to regional differences in fuel price and availability; LPG versions ran with an adapted carburettor and ignition at lower compression. At 25 km/h and a modest 1,800 rpm, the 560 is built for pulling power rather than engine speed, as was usual for standard tractors of the period.
When buying a used 560, the fuel system fitted determines much of the inspection: an LPG engine needs a sound vaporiser and pressure regulator, while a petrol engine is more prone to carburettor icing. On any version, it is worth checking the cylinder head gasket, since inline six-cylinder engines of this era are prone to warping. Wheel bearings, steering knuckles and the clutch plate also belong on the checklist.
Sources: SpecCodex-Register: Kennwerte des Modells International Harvester 560
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