ENGINE: Performance data
Description
Fiat engines installed on 55-56/60-56/65-56/70-56 model tractors are high-speed, 4-stroke, direct injection in-line Diesel units.
Engine block: single iron casting, dry sleeve, crank-shaft, camshaft and valve tappet seats.
Cylinder heads: integral valve seats.
Valve gear: pushrod operated valves, helical gear driven camshafts.
Crank gear: crankshaft running on 4 bearings (mods. 55-56/60-56 or 5 bearings (65-56/70-56), 3-ring light alloy piston (one compression ring and two oil scraper rings).
A flyweight-type dynamic balancer in the engine sump (mods. 65-56/70-56) reduces engine and engine-induced vibrations.
Air induction system: through oil-bath or dry air filter.
Fuel system: rotating distributor injection pump; 3-orifice injectors (60-56) or 4-orifice injectors (55-56/65-56/70-56).
Lubrication system: forced feed, gear pump, full flow oil filter and pressure relief valve.
Cooling system: water, centrifugal pump, wax thermostat.
Engine starting: 12 volt electromagnetically operated starter and thermostarter (where applicable).