Mercedes S-Class W-220

since 1998 release

Repair and operation of the car



Mercedes W220
+ Mercedes-Benz cars of the class S (W220)
+ Operation manual
+ Routine maintenance
- Engine
   Check of a compression in engine cylinders
   Check of the engine by means of the vacuum gage
   Belt of the streaming drive of auxiliary units
   Gas-distributing mechanism and elements of the engine
   Replacement of chains of the GRM drive and installation of phases of gas distribution
   Location of the main sensors of the petrol engine
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
+ Automatic transmission
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of 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. V6 engines


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)


V6 engine

Special tools:

Cover for fixing of the camshaft - No. 112589054000.
Key for fixing of the camshaft - No. 112589000100.
Key under a camshaft asterisk bolt - No. 112589010300.
The device for fixing of the left camshaft - No. 112589013200.
The device for fixing of the right camshaft - No. 112589003200.
The device for fixing of a pulley of a bent shaft - No. 112589004000.
The device for blocking of a flywheel - No. 112589034000.
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. 602589056300.
Divider of links of a gas-distributing chain (element 3) - No. 602589056301.
The device for joining of links of a chain - No. 602589003900.
A set of dies for joining of links of a chain - No. 103589016300.
Toolbox - No. 602589009800.
Devices for fixing of a chain on asterisks of camshafts - No. 112589044000.
The holder of a pulley of the viscous coupling - No. 113589004000.
Key for fixing of the viscous coupling - No. 113589000100.

General measures of precaution

 PERFORMANCE ORDER

1. Disconnect a negative wire from the battery.
2. Turn out spark 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.


Procedures of installation of phases of gas distribution

 PERFORMANCE ORDER

1. Bring the piston of the first cylinder [1] into situation 40 ° after VMT.
2. Make sure of correctness of combination of parallel flutes of both camshafts with a cut of a head of cylinders [2].
3. Install the blocking devices [3] on camshafts.
4. On engines 112 check correctness of an arrangement of adjusting tags of a balancing shaft [4].
5. Before starting implementation of repair procedures, remove assembly of a natyazhitel [5].

At installation of the piston of the first cylinder in situation 40 ° after VMT camshafts can be turned without risk of contact of valves with the bottoms of pistons.

6. At assembly bring the piston of the first cylinder into situation 40 ° after VMT and achieve combination of copperplated links of a chain with:

  • Adjusting tags of asterisks of both camshafts [6];
  • For engines 112: with an adjusting tag on an asterisk of a balancing shaft [7];
  • With a spline and an adjusting tag of a bent shaft [8].

Upon completion of installation combination of copperplated links of a chain has to happen on every fourteenth turn.


Replacement of a gas-distributing chain

 PERFORMANCE ORDER

1. Remove assembly of an axis of yokes of the right camshaft assembled with covers of bearings.
2. Without tightening fixture, establish a cover of fixing of the camshaft [9] (the special tool No. 112589054000).
3. Install devices for fixing of a chain on asterisks of camshafts (the special tool No. 112589044000).
4. By means of devices from the list given above connect a new chain to old on the right number of cylinders, - for putting on of a chain on asterisks turn a bent shaft.

Bolts of fastening of assemblies of axes of yokes (mm M7x84) are not subject to reuse and have to be replaced.

Removal of a balancing shaft on engines 112 is made in the following order:

  • Pass a suitable blocking core throughout a counterbalance on a back pin of a shaft [11];
  • Turn out a fixing bolt and remove a counterbalance;
  • From the forward party take a balancing shaft;
  • In the course of assembly do not forget to grease the central bolt of a pulley of a bent shaft.

Do not block a flywheel / a driving disk at removal/installation of a bolt of a pulley of a bent shaft.


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 (a transmission dome) - mm M6x90.
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.
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: 80 N · m.

Effort of tightening of a bolt of a pulley of a bent shaft [7]:

  • Bolt of classification of 8.8 200 N · m + 90 °;
  • Bolt of classification of 10.9 325 N · m + 90 °.