Over time, the brass orifice can erode and enlarge. This reduces the velocity of the oil spray, meaning the spinner doesn't spin fast enough to separate oil. Simultaneously, the larger hole dumps more oil into the housing than the drain can handle, causing it to overflow out of the breather. Excessive Blow-by (Engine Wear)
The MaxxForce 13 uses a spinning "squirrel cage" separator driven by oil pressure to fling oil droplets out of the crankcase gases. maxxforce 13 crankcase breather problems
The "jet plate" is a brass orifice that sprays oil onto the centrifuge to spin it. Over time, the brass orifice can erode and enlarge
The MaxxForce 13 engine, manufactured by Navistar, is well-known for its complex emissions systems, and the is a frequent source of trouble. When this system fails, it often leads to excessive oil being expelled through the road draft (blow-by) tube. Common Crankcase Breather Problems Failing Centrifugal Separator (Squirrel Cage) Excessive Blow-by (Engine Wear) The MaxxForce 13 uses