Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car

+ Mercedes-Benz cars of class C (W-203)
+ Operation manual
+ Routine maintenance
- Engine
   Check of a compression in engine cylinders
   Check of the engine by means of the vacuum gage
   Removal and installation of a cover of a motive compartment from the bottom
   + 4-cylinder petrol engines
   - 6-cylinder petrol engines
      Removal and installation of a head of cylinders
      Replacement of chains of the GRM drive and installation of phases of gas distribution
      Removal and installation of a maple belt
   + Diesel engines
   + Engine lubrication system
+ Cooling system and heating
+ 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 a head of cylinders



1. Uncover the engine or the air filter vertically up covers of heads of cylinders.
2. To sort system of an admission of air it is not allowed.
3. Fix the tension device of a maple belt by means of a drift or a pin with a diameter of 5 mm.
4. Turn a bent shaft in the direction of rotation and stop the piston of the first cylinder in situation 40 ° after VMT. Grooves on camshafts have to show the direction inside.
5. For removal of a natyazhitel of a chain cast away the generator. For this purpose turn out the top bolt, and lower weaken.
6. Fix a chain by a cable connector to the right asterisk of the camshaft. Mark the left asterisk of the camshaft in relation to a chain. Jumping of a chain on a bent and balancing shaft is impossible.
7. Pay attention to the different length of bolts of fastening of covers of bearings of the camshaft. Mark the provision of bolts.

8. Turn off 4 bolts of fastening (and / b) gas distribution mechanism case covers.

9. Turn out bolts of fastening of a head of cylinders in the sequence of numbering, i.e. with 1 on 8. Torx head is for this purpose necessary. Z1 on Z6 – designation of cylinders with 1 on 6. The arrow specifies the direction of the movement of the car.



1. Tighten bolts of fastening of a head of cylinders in the sequence with 1 on 8 in four receptions, the efforts specified in Specifications.

If the moment of an inhaling of a bolt was incidentally exceeded, turn out a bolt. Check length of a bolt and if necessary replace it new. Length of a bolt cannot be more than 144.5 mm. Again tighten a bolt, since reception 1.

2. Fix a head of cylinders by four bolts (and / b) to a gas distribution mechanism case cover. The arrow specifies in the direction of the movement.

3. The sequence of an inhaling of bolts of fastening пермыек cases of poshipnik of camshafts is presented in Specifications.