S-class W202 Mercedes

1993-2000 of release

Repair and car operation



W202 Mercedes
+ 1.2. General information
+ 2. Maintenance
- 3. Engines
   3.1.2. Identification number
   + 3.1.3. Engine
   3.1.4. Cars with the conditioner
   3.1.5. Bottom cover of a motor compartment
   3.1.6. Covers of cast openings
   3.1.7. Natyazhitel of a chain
   + 3.1.8. Cover of a head of the block of cylinders
   + 3.1.9. Head of the block of cylinders
   + 3.1.10. Camshafts
   3.1.11. Hydraulic tarelchaty 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. Compression
   + 3.1.17. Klinovy belt
   3.1.18. Diagnostics of malfunctions (DB)
   3.1.19. General comments
   3.1.20. Repair work without engine dismantle
   + 3.1.21. Major maintenance of the engine
   + 3.2. Diesel engine (DD)
   3.2.3. Cars with the conditioner
   3.2.4. Bottom cover of a motor compartment
   3.2.5. Covers of cast openings
   3.2.6. Natyazhitel of a chain
   + 3.2.7. Camshaft
   + 3.2.8. Head of the block of cylinders
   + 3.2.9. Maslootrazhatelnye caps
   3.2.10. Cover of a head of the block of cylinders (2,2/2,5 l)
   3.2.11. Hydraulic tarelchaty 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. Head of the block of cylinders and motor block
   3.2.16. Compression
   3.2.17. Maple ridge belt
   3.2.18. Tense device of a maple ridge belt
   3.2.19. Diagnostics of malfunctions (DD)
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes








b47c026d b47c026d


3.1.13. Valves

Removal
Prevention

If details of management of the valve are used again, it is necessary to establish them on former places. Not to mix a detail, make the panel for their storage.


PERFORMANCE ORDER
1. Remove a head of the block of cylinders and put on two wooden supports.
2. Remove camshafts.
3. Remove a tarelchaty pusher.
4. Designate valves before dismantling that at assembly to establish them on former places. For this purpose number plates of valves a felt-tip pen.
5. Remove valves by means of an available natyazhitel of springs. Thus pull springs and remove crackers of a core of the valve. Then unclench a spring and take the top plate and a valve spring.
6. Remove maslootrazhatelny caps.
7. Take the valve from a head of the block of cylinders in the direction to the combustion chamber.
8. Clean the valve. Valves with the scorched plate, with small height of a plate, with the worn-out and scratched core replace.
9. In repair shop it is possible to check a valve core on admissible palpation which should not make more than 0,03 mm.
Prevention

Final valves are filled with sodium. They should not be exposed to the soldering or be used as the working tool (for example, as a pusher): danger of explosion!



Installation

PERFORMANCE ORDER
1. Before assembly of valves check them directing, if necessary – finish saddles of valves.
Prevention

If the new valve, just in case is established previously finish a valve saddle.


2. Remove agnails from a valve core on a surface of a prileganiye of details of a rod of the valve.
3. Slightly grease with engine oil a core of the valve and directing the valve and insert the valve.
4. Establish a maslootrazhatelny cap.
5. Establish a valve spring.
6. Then establish the following valve. Thus do not mix inlet and final valves.
7. Establish a tarelchaty pusher.
8. Establish camshafts.
9. Establish a head of the block of cylinders.