Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
- 4. Greasing system
   4.2. The engine oil specification
   4.3. A scope of oils / a viscosity class
   4.4. The oil expense
   4.5. A contour of circulation of oil (ДД)
   4.6. Oil редукционный the valve
   + 4.7. The oil pallet
   4.8. The indicator of level of oil
   4.9. The heat exchanger oil-/of a cooling liquid
   4.10. Diagnostics of malfunctions in a contour of circulation of oil
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes

4.5. A contour of circulation of oil (ДД)

The oil pump (240) soaks up engine oil from the oil pallet and forces it in the oil filter of the main contour (275). Between delivery and soaking up area of the oil pump there is a safety valve of adjustment of pressure of oil (approximately about 5 bar). Thanks to it, the oil part pours out in soaking up space. Sideways in the oil pallet there is a gauge of level of oil (351).

Engine oil is forced, passing рециркуляционный запорный the valve, in the oil filter. Рециркуляционный запорный the valve prevents oil hit in the oil pallet at the stopped engine.

From the oil filter the cleared oil arrives in the main oil channel. At the littered oil filter байпасный the valve directs crude oil directly to the main oil channel.

From the main oil channel there are branchings for greasing of bearings of a cranked shaft. Through inclined apertures in a cranked shaft oil gets to bearings of rods, and in a body of rods – to piston fingers. Through atomizers of injection of oil (238) oil for cooling is injected on the basis of pistons.

Simultaneously engine oil through delivery pipelines arrives in a head of the block of cylinders and there provides greasing натяжителя chains, bearings of a camshaft (185) and тарельчатых pushers (203). Through cross-section apertures in addition fuel pump (1) and муфта advancings of giving of fuel (18) and if it is available, турбокомпрессор is greased.

And – crude oil to a cooler air-oil

In – crude oil from a cooler air-oil

The prevention

In engines in volume of 2,2/2,5 l instead of a cooler air-oil is established the heat exchanger oil – a cooling liquid which is located near to the oil pallet.