Crankcase ventilation system (Freelander 2)

Pos.	Spare part number	Name
1	-	Camshaft cover
2	-	Crankcase ventilation system valve
3	-	Air duct running from the crankcase ventilation valve to the air intake system
4	-	Oil filler cap
5	-	Crankcase ventilation oil separator
6	-	Return oil line
7	-	Crankcase ventilation pipe - with flow direction indicated

To prevent gases from accumulating in the engine crankcase, engine crankcase gases are drawn into an oil separator, where oil particles are removed from the gases. The oil then drains into the engine oil pan, and the gases are directed into the engine air intake system.

Before introducing oil-free gases into the air intake system, the Positive Crankcase Ventilation (PCV) valve operates to minimize crankcase pressure variations caused by engine air demand and engine operating conditions.