Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car



Mercedes-Benz
+ 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
   - Diesel engines
      Removal and installation of the top cover of the engine
      Installation of the piston of the first cylinder in the provision of 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 guide of a chain
      Replacement of chains of the GRM drive and installation of phases of gas distribution
      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
   + 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












Replacement of chains of the GRM drive and installation of phases of gas distribution

Scheme of the chain drive of the gas-distributing mechanism (GRM) and stages of the procedure of installation of phases of gas distribution (Diesel engine of 3.2 l)




Special tools:

Core for fixing of the camshaft - No. 111589031500.
The device for fixing of a flywheel / a driving disk (a transmission dome) - No. 601589024000.
Bolts of fastening of device for fixing of a flywheel / a driving disk (on a transmission dome) - M6 x 90 mm.
The device for fixing of a flywheel / a driving disk (an opening under installation of a starter) - No. 602589004000.
Set for division of links of a gas-distributing chain - No. 602589024000.
Divider of links of a gas-distributing chain (element 1) - No. 602589023300.
Divider of links of a gas-distributing chain (element 2) - No. 602589046300.
Divider of links of a gas-distributing chain (element 3) - No. 602589046301.
The device for joining of links of a chain - No. 602589003900.
A set of 1 dies for joining of links of a chain - No. 103589026300.
A set of 2 dies for joining of links of a chain - No. 103589036300.
A set of 3 dies for joining of links of a chain - No. 103589096300.
Toolbox - No. 602589009800.

General measures of precaution

 PERFORMANCE ORDER

1. Disconnect a negative wire from the battery.
2. Turn out glow plugs for the purpose of simplification of a provorachivaniye of the engine.
3. If the return is not stipulated especially, turn the engine in the normal direction.
4. Study requirements imposed to efforts of tightening of threaded connections.
5. At the corresponding complete set mark position of the CKP sensor before its removal.
6. Do not turn a bent shaft by means of driving asterisks of the camshaft or devices.
7. Do not turn cranked and distributive shaft at the removed GRM drive chain.
8. After installation of phases of gas distribution make check of TNVD.


Procedures of installation of phases of gas distribution

 PERFORMANCE ORDER

Replacement of a gas-distributing chain can be made without dismantle of the engine. Use special tools from the list given above. The new chain can be connected to old, is thrown an asterisk and then joined.

1. Bring the piston of the first cylinder [1] into the provision of VMT.
2. Pass a blocking core throughout an asterisk of the inlet camshaft [2].
3. Make sure of correctness of combination of adjusting tags of camshafts [3] and [4].
4. Before starting implementation of repair procedures, remove assembly of a natyazhitel [5].

Bolts of fastening of asterisks of camshafts [6] are not subject to reuse and have to be replaced by new.

5. Upon completion of repair work establish a natyazhitel [5].

Effort of tightening of fixture of a natyazhitel of 80 Nanometers.
Effort of tightening of a bolt of a pulley of a bent shaft [7]:
Bolt of classification of 8.8 — 200 Nanometers + 90 °;
Bolt of classification of 10.9 — 325 Nanometers + 90 °.