Positive Crankcase Ventilation: Description and Operation

Crankcase Ventilation System:

The engine is ventilated through a part load and a full load breather.

The part load breather is a flexible composite hose connected between the oil separator in B bank camshaft cover and the induction elbow. A restrictor in the outlet from the oil separator prevents reverse flow.

The full load breather is a flexible composite hose connected between the oil separator in A bank camshaft cover and the air intake duct.

The ends of the breather hoses incorporate quick release connectors.





The oil separators consist of wire gauze packed into an open ended enclosure below the breather outlet.