LUBRICATION SYSTEM

The lubrication system is of the wet sump type; the engine lubrication oil is collected in a sump, integral with the crankcase, and is circulated by means ofa single oil-bath pump. This solution replaces the dry-sump system that equipped the previous engines. This solution is technically much less complex, allowing to improve reliability. Other advantages of the wet sump lubrication system are improved fuel economy andsignificant noise reduction improving comfort on board.

Oil tank

The engine oil tank is incorporated in the engine sump.

Nominal lubrication pressure

4 bar with oil temperature at 100°C at 6000 rpm

Amount of oil in sump

9L (corresponding to max. level)

Difference between min and max level on dipstick :1,5L

Cooling of the engine oil

A water/oil heat exchanger is located inside the V of the engine block.

Oil level check procedure:

The level must be checked when the engine is warm, following theprocedure below:

1.start the vehicle and warm it up until the temperature stabilises;

2.stop the engine, remove the filler cap and wait 5 minutes to allow the oil to flow into the sump;

3.measure the level and top up if necessary. The oil level must bebetween the MIN and MAX reference notches on the dipstick.

Cooling System

The enginecoolantcirculationisenforcedbya centrifugalpumpwhichisdrivenbythe enginecrankshaftbymeansof a poly-Vbeltwithouttensioner.

Coolantpump

Centrifugalwater pumpisintegratedin the front engine cover and incorporates the thermostaticvalve.

Circuit pressure

Maximumpumpexit pressure: 3,4 bar

Coolantexpansiontank

Locatedat the right handside of the enginebay.

Thermostaticvalve

Beginof valve opening: 85°C±2

Valve closing: 95°C±2

Maximumoperatingtemperature: 130°C

Radiator

The water radiatorislocatedin the frontalpart of the enginecompartment, togetherwiththe A/C condenserand power steeringoil cooler. Twoelectriccoolingfansare used.

Caution Caution

The water pumpdrive beltisof the stretchybelttype(no tensionerisused). The beltmustbereplacedeverytime itis removed. A special toolisusedforthe installingof the belt.

Crankcase Vapour Recirculation System

The device for oil gas and vapour recirculation is of the closedcircuit type. The engine heads are connected by means of a pipe that balances and stabilises the vapours coming from the crankcase. A degasser on the left-hand engine head ensures oil vapour separation allowing recirculation directly in the intake manifold.