Mercedes S-Class W-140

1991-1999 of release

Repair and car operation



Mercedes S-Class
+ Mercedes-Benz Cars of a class S (W-140)
+ Operation manual
+ Routine maintenance
- Engine
   Compression check in engine cylinders
   Engine check by means of the vacuum gage
   Belt of a streaming drive of auxiliary units
   + 6-cylinder petrol engines (M104.944 and M104.990/994)
   - 8-cylinder petrol engines (M119.970/981 and M119.971/981)
      Covers of heads of the block of cylinders - installation details
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
      Removal and installation of heads of the block of cylinders
      Removal and installation of covers of a chain of a drive of GRM
      Replacement of a chain of a drive of GRM
      Check of phases of a gazoraspredeleniye
      GRM drive - the general information, service of components
      Removal and installation of a regulator of phases of a gazoraspredeleniye
      Removal and installation of camshafts
      Check and adjustment of control provision of camshafts
      Removal and installation of valves
      Replacement of directing plugs of valves
      Replacement of rings of saddles of valves
      Removal and installation of pistons
      Designation and sizes of pistons
      Check of a condition of rods
      Check of a condition of a cranked shaft
   + 12-cylinder petrol engines (M120.980/982)
   + 6-cylinder diesel engines (OM603.971)
   + 6-cylinder diesel engines (OM606.961)
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ gear shifting Box
+ Avtomaticheckaya transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



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Replacement of a chain of a drive of GRM

See also Section GRM Drive - the general information, service of components.


Removal of a chain of a drive of GRM

01 — Cores
04, 05 — Wedges
2 — the Top directing lever

4 — the Chain of a drive of GRM
8 — the Plate


 PERFORMANCE ORDER

1. Bring the engine into situation 45 ° before VMT of the piston of the first cylinder in situation.
2. Block cores (01) camshafts of the right head of the block of cylinders.
3. Remove a natyazhitel of a chain of a drive of GRM and the right tension lever (2) from above.
4. Block a chain on asterisks of camshafts by means of wedges (04) and (05).
5. Vypressuyte a finger of a chain (4) between inlet and final asterisks.
6. By means of a screw-driver remove a plate (8) chains (4).
7. Take a dual link of a chain (4).
8. Attach a new chain (5) to old (4) by means of a link (6) and an intermediate plate (7) (thickness of 1.6 mm) and an external plate (8).
9. Take fingers (01).


Replacement of a chain of a drive of GRM

01 — Cores
04, 05 — Wedges
4 — the Old chain
5 — the New chain

6 — the Connecting link
7 — the Intermediate case
8 — the External plate
10 — the Key


 PERFORMANCE ORDER

1. Remove a wedge (05), pressing a hand a chain to asterisks of camshafts at this stage.
2. Weaken the provision of a wedge (04) on an asterisk of a final shaft.
3. Rotate a cranked shaft by means of a key (10), pressing a hand a chain to asterisks of camshafts. Be convinced that the chain did not move at rotation. Thus the new chain should be established in GRM cover.
4. The end of an old chain (4) disconnect from a new chain (5).
5. Rotate a cranked shaft until will be possibilities to connect the ends of a new chain by means of a connecting link.
6. Establish wedges (04) and (05) on asterisks.
7. Connect a new chain (5) link (6) and a plate (7).


Assembly of a chain of a drive of GRM

1 — Capture
2 — the Mobile persistent plate

8 — the External plate
06 — the Bolt


 PERFORMANCE ORDER

1. Establish capture (1) press and insert a chain into it. Screw a bolt (28).
2. Establish a mobile persistent plate (2).
3. Insert an external plate (8) (thickness of 1.2 mm) into a mobile persistent plate.
4. Chain a press.
5. Screw a bolt (06) and press a chain. Be convinced that fingers of a connecting link are pressed in an external plate (8).
6. Remove a press.


Assembly of a chain of a drive of GRM


 PERFORMANCE ORDER

1. Move back a persistent plate (arrow) (2).
2. Establish a press over the central finger.
3. Tighten a bolt (06) moment of 30 Nanometers.
4. Fingers of a connecting link (6) are pressed separately.
5. Check a press fitting (arrows) and, if necessary, repeat it.
6. Establish camshafts in control situation.
7. Establish a natyazhitel of a chain.
8. Check the control provision of camshafts.