Mercedes of the S-class W202

1993-2000 of release

Repair and operation of the car


Mercedes W202
+ 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. Lower 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 dish-shaped pushers
   3.1.12. Maslootrazhatelny caps
   3.1.13. Valves
   3.1.14. The directing valves
   3.1.15. Saddles of valves in a head of the block of cylinders
   3.1.16. Compression
   + 3.1.17. Maple belt
   3.1.18. Diagnostics of malfunctions (DB)
   3.1.19. General comments
   3.1.20. Repair work without dismantle of the engine
   + 3.1.21. Capital repairs of the engine
   + 3.2. Diesel Engine (DE)
   3.2.3. Cars with the conditioner
   3.2.4. Lower 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. Maslootrazhatelny caps
   3.2.10. Cover of a head of the block of cylinders (2,2 / 2,5 l)
   3.2.11. Hydraulic dish-shaped pushers
   3.2.12. Valves
   3.2.13. The 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. The pulling device of a maple ridge belt
   3.2.19. Diagnostics of malfunctions (DD)
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electrical circuitries




3.1.13. Valves

 Removal
Prevention

If details of management of the valve are used again, they need to be established on former places. Not to mix a detail, manufacture 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 dish-shaped pusher.
4. Designate valves before dismantling that at assembly to install them on former places. For this purpose number plates of valves a felt-tip pen.
5. Remove valves by means of the available natyazhitel of springs. At the same time pull springs and remove valve core crackers. Then unclench a spring and take the top plate and a spring of the valve.
6. Remove maslootrazhatelny caps.
7. Take the valve from a head of the block of cylinders towards the combustion chamber.
8. Clean the valve. With the small height of a plate, with the worn-out and scratched core replace valves with the burned plate.
9. In repair shop it is possible to check a valve core for an admissible beating 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 their guides, if necessary – finish saddles of valves.
Prevention

If the new valve is installed, just in case 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 oil engine a core of the valve and a guide of the valve and insert the valve.
4. Establish a maslootrazhatelny cap.
5. Establish a valve spring.
6. Then install the following valve. At the same time do not mix inlet and final valves.
7. Establish a dish-shaped pusher.
8. Install camshafts.
9. Establish a head of the block of cylinders.