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