Oil Separator
| ITEM | DESCRIPTION |
|---|---|
| A | Gas and oil vapor |
| B | Gas vapor |
| C | Oil |
| 1 | Breather pipe |
| 2 | Positive Crankcase Ventilation valve |
| 3 | Positive Crankcase Ventilation baffle |
| 4 | Oil drain valve |
| 5 | Oil |
The breather consists of an oil separator, Positive Crankcase Ventilation valve and a flexible hose. The oil separator and the Positive Crankcase Ventilation valve are installed in the top of the engine. The flexible hose connects to the turbocharger input duct connector.
The oil separator is installed in a channel in the top of the camshaft carrier. A baffle plate, which incorporates a gas intake and an oil drain, is installed over the channel.
The gas and oil vapor pass over the separator. The oil drains to the camshaft carrier, and via an oil drain valve into the oil pan. The vapor is drawn into the turbocharger via a flexible hose attached to the turbocharger inlet duct from the camshaft cover.
The positive crankcase ventilation valve regulates the crankcase pressure.
On NAS vehicles, a crankcase pressure sensor is fitted to the top of the engine vent module. The sensor is used to detect when a crankcase vent pipe is disconnected.
For additional information, refer to: Electronic Engine Controls .