Depending on the breather system used, the crankcase ventilation filter will be located:
1. On top of the rocker lever cover, between the rocker lever cover and the crankcase ventilation filter cover.
2. At the rear of the engine, encased in an external crankcase ventilation filter housing that mounts to the flywheel housing.
Both systems are closed crankcase breather systems, meaning the crankcase gases are vented into the intake system at the inlet to the turbocharger.
The crankcase ventilation filter requires periodic replacement for maintenance. See the appropriate Operation and Maintenance Manual/Owners Manual for the engine being serviced.
