Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
- 3. Engines
   3.1.2. Identification number
   + 3.1.3. The engine
   3.1.4. Cars with the conditioner
   3.1.5. The bottom cover of a motor compartment
   3.1.6. Covers of cast apertures
   3.1.7. Натяжитель chains
   + 3.1.8. A cover of a head of the block of cylinders
   + 3.1.9. A head of the block of cylinders
   + 3.1.10. Camshafts
   3.1.11. Hydraulic тарельчатые pushers
   3.1.12. Maslootrazhatelnye caps
   3.1.13. Valves
   3.1.14. Directing valves
   3.1.15. Saddles of valves in a head of the block of cylinders
   3.1.16. A compression
   + 3.1.17. A klinovyj belt
   3.1.18. Diagnostics of malfunctions (DB)
   3.1.19. Broad-brush observations
   3.1.20. Repair work without engine dismantle
   + 3.1.21. Engine major repairs
   - 3.2. The diesel engine (ДД)
      - 3.2.2. The engine
         3.2.2.2. Installation
         3.2.2.3. Engine ventilation
         3.2.2.4. Functioning
   3.2.3. Cars with the conditioner
   3.2.4. The bottom cover of a motor compartment
   3.2.5. Covers of cast apertures
   3.2.6. Натяжитель chains
   + 3.2.7. A camshaft
   + 3.2.8. A head of the block of cylinders
   + 3.2.9. Maslootrazhatelnye caps
   3.2.10. A cover of a head of the block of cylinders (2,2/2,5)
   3.2.11. Hydraulic тарельчатые pushers
   3.2.12. Valves
   3.2.13. Directing valves
   3.2.14. Saddles of valves in a head of the block of cylinders
   3.2.15. A head of the block of cylinders and the motor block
   3.2.16. A compression
   3.2.17. Клиновой a ridge belt
   3.2.18. The pulling device клинового a ridge belt
   3.2.19. Diagnostics of malfunctions (ДД)
+ 4. Greasing system
+ 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

3.2.2.4. Functioning

THE GENERAL DATA

126. An oil separator
127. A retsirkuljatsionnaja pipe
140. A distributive pipe
141. The valve of adjustment of pressure And. A ventilating aperture in diameter of 3 mm
A.Produvnye gases
V.Svezhy air

Hot gases direct through an oil separator (126) in a cover of a head of the block of cylinders and through the pipeline (140) in soaking up branch pipes. In an oil separator (126) oil is filtered and flows through рециркуляционную a pipe (127) back to a head of the block of cylinders.
The valve of adjustment of pressure in a cover of a head of the block of cylinders prevents occurrence in the engine of too high depression.

For ventilation of space of a membrane in the valve of adjustment of pressure in a cover of a head of the block of cylinders the ventilating aperture (arrow) is provided. It should not be littered by a dirt or preservatives.