Mercedes C-Class

W203 since 2000 of release

Repair and car operation



Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
- Engine
   Compression check in engine cylinders
   Engine check by means of the vacuum gage
   Removal and installation of a cover of an impellent compartment from the bottom
   + 4-cylinder petrol engines
   + 6-cylinder petrol engines
   - Diesel engines
      Removal and installation of the top cover of the engine
      Installation of the piston of the first cylinder in situation VMT
      Removal and installation of a cover of a head of cylinders
      Removal and installation of a head of cylinders
      Removal and installation of a forward cover
      Removal and installation of the top directing chain
      Replacement of chains of a drive of GRM and installation of phases of a gazoraspredeleniye
      Removal and installation of camshafts
      Removal and installation of an intermediate asterisk
      Removal and installation of a natyazhitel of a chain
      Removal and installation of a maple belt
   + System of greasing of the engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment







Removal and installation of camshafts

Removal

 PERFORMANCE ORDER

1. Remove the top covers of the engine, address to appropriate section.
2. Remove nozzles, address to the Section Removal and installation of nozzles.
3. Uncover heads of cylinders, address to appropriate section.
4. Establish the piston of the first cylinder in situation VMT.

5. Fix a camshaft of inlet valves. For this purpose insert a lock finger (1) through a cover of the first bearing of camshafts into an opening in an asterisk of a shaft of inlet valves (2).

6. Remove a natyazhitel of a chain, address to appropriate section.
7. Remove a forward cover, address to appropriate section.
8. Remove top directing slidings, address to appropriate section.
9. Mark a camshaft asterisk in relation to a chain.

If at carrying out the subsequent works the camshaft does not rotate, connect a cable connector an asterisk and a chain.

10. Disconnect an asterisk from a camshaft of final valves and remove it. Thus remember directing pins. Remove an asterisk together with a chain.

11. Engine 611: Remove covers of bearings of camshafts:

· Unscrew bolts of fastening of covers Е1, Е3, Е5, and also А1, А3 and А5. Thus pay attention to marking of covers for the subsequent installation.
· Weaken bolts of fastening of covers of bearings E2, Е4 and А2, А4 in stages, each time on one turn so that to remove antipressure of a camshaft. Watch that at an otvorachivaniye of bolts camshafts did not warp. Completely turn out bolts and remove covers.

12. Engine 612: Remove covers of bearings of camshafts as follows:

· Unscrew bolts of fastening of covers Е1, Е3, Е4, Е6, and also А1, А3, А4 and А6. Thus pay attention to marking of covers for the subsequent installation.
· Weaken bolts of fastening of covers of bearings E2, Е5 and А2, А5 in stages, each time on one turn so that to remove antipressure of a camshaft. Watch that at an otvorachivaniye of bolts camshafts did not warp. Completely turn out bolts and remove covers.

13. Take out camshafts of inlet and final valves.


Installation

 PERFORMANCE ORDER

1. Grease a pusher and basic necks of camshafts with pure impellent oil. Check ease of a course of pushers.
2. Establish camshafts of inlet and final valves and expose them on the axial bearing. Thus pay attention to an arrangement of shaft. Marking of shaft is put in a point of contact to the persistent bearing.

01 Camshaft of inlet valves
00 Camshaft of final valves.

3. Establish camshafts so that openings (3) were in asterisks of camshafts against each other and markings of a camshaft and a bearing cover coincided.

Camshafts are very sensitive to retension and can collapse. Therefore watch that installation did not lead to any overloads of shaft.

4. Turn a cranked shaft in the opposite direction before position of the piston of the first cylinder 30 ° before VMT.

5. Establish covers of bearings according to their marking.

Covers of bearings are dissymetric. Watch that they were not displaced.

6. Engine 611: Fix covers of bearings of camshafts as follows:

· Tighten bolts of fastening of covers Е2, Е4; and А2, А4 in stages, each time on one turn. Tighten covers the moment 9Нм. Watch that at an inhaling of bolts camshafts did not warp.
· Wrap covers of bearings E1, Е2, Е5, and also А1, А3, А5 the moment 9Нм.
7. Engine 612: Fix covers of bearings of camshafts as follows:
· Tighten bolts of fastening of covers Е2, Е5; and А2, А5 in stages, each time on one turn. Tighten covers the moment 9Нм. Watch that at an inhaling of bolts camshafts did not warp.
· Wrap covers of bearings E1, Е3, Е4, Е6 and also А1, А3, А4, А6 the moment 9Нм.
8. Establish the piston of the first cylinder in situation VMT.
9. Fix a camshaft of inlet valves. For this purpose insert a lock finger through a cover of the first bearing into an opening in an asterisk of a shaft of inlet valves.
10. Establish an asterisk with a chain on a camshaft of inlet valves, thus pay attention to directing pin.
11. Fix an asterisk new bolts the moment 18Нм. If necessary cut off and remove a cable connector.
12. Establish top directing, address to appropriate section.
13. Establish a natyazhitel of a chain with a new sealing ring, address to appropriate section.
17. Establish the top covers of the engine, address to appropriate section.