| The system consists of an oil separator | | | | separator located in the valve cover, idle |
| located under valve cover valve cover gasket | | | | speed air distributor,coolant lines and |
| number 103 016 04 21 for replacment, | | | | connecting hoses, idle speed air line.When |
| distribution tube on intake manifold, and | | | | the engine is operating under high intake |
| return flow tube. California models are | | | | manifold vacuum, blow-by gases flow out of |
| equipped with a diaphragm regulating valve | | | | the valve cover, through the by-pass bore in |
| located in the oil separator.When the engine | | | | the idle speed air distributor, and into the |
| is running, blow-by gases flow through the | | | | intake manifold idle speed air passage. A |
| oil separator, and to the distribution tube | | | | small amount of filtered air is drawn into |
| on the intake manifold, through a connecting | | | | system through the by-pass hole.When the |
| hose. Oil from the separator returns to the | | | | engine is operating at low or no intake |
| cylinder head through the return flow tube.On | | | | manifold vacuum, blow-by gases flow into the |
| Mercedes Bens California models, the | | | | air cleaner where they are mixed with |
| diaphragm regulating valve is used to prevent | | | | filtered air before burning.If needed replace |
| excessive vacuum from forming in | | | | the air filter number 003 094 54 04.To |
| crankcase.The system consists of an oil | | | | ensure against vent line freezing, coolant is |
| separator located in the valve cover, idle | | | | routed to vent line from cylinder head. |
| speed air distributor 000 141 22 25, and a | | | | Coolant returns to water pump through coolant |
| connecting hose.When the engine is operating | | | | return line..The system consists of a fresh |
| under high intake manifold vacuum, blow-by | | | | air hose from air cleaner to right cylinder |
| gases flow out of the valve cover, through | | | | head cover, a breather hose from left |
| the by-pass bore in the idle speed air | | | | cylinder head cover hose number 103 094 10 |
| distributor 000 141 22 25, and into the | | | | 82, an orifice, and a connection to intake |
| intake manifold idle speed air passage. A | | | | system.During idle or low speed operation, |
| small amount of filtered air is drawn into | | | | vapors are drawn through the orifice, into |
| system through the by-pass hole.When the | | | | the idle air distribution tubes, then into |
| engine is operating at low or no intake | | | | the intake manifold. Fresh air to vent the |
| manifold vacuum, blow-by gases flow into the | | | | engine comes through the air cleaner and |
| air cleaner where they are mixed with | | | | right cylinder head cover hose. During high |
| filtered air before burning. Make sure you | | | | speed operation the vapors are drawn in |
| always check your engine maintanance | | | | through the air cleaner and burned.The |
| guide.Fig. 2: Crankcase Ventilation System | | | | crankcase ventilation system is maintenance |
| (190E 2.3) | | | | free, but hoses should be checked to ensure |
| | | | that they are not cracked and are free of |
| 190E 2.3-16The system consists of an oil | | | | obstructions.. |