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



56822268



Removal and installation of camshafts

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


Arrangement of camshafts

1, 1a, 2, 2a — the Top sliding levers
5, 6, 7, 8 — Camshafts
10, 12 — Covers
13 — Natyazhitel of a chain
14 — the Cover of the bearing of a camshaft


The sizes of camshafts are specified in Specifications.

Covers of camshafts have sequential numbering, since a forward cover of the right final camshaft. Numbers are beaten out on heads of the block of cylinders. Covers of bearings should be established in the same situation.

Removal

 PERFORMANCE ORDER

1. Establish the piston of the first cylinder in situation 45 ° before VMT.
2. Remove the top forward cover.
3. Mark the mutual provision of a chain of a drive of GRM concerning asterisks of camshafts.
4. Remove a natyazhitel of a chain of a drive of GRM.
5. Remove the top sliding levers.
6. Remove a chain of a drive of GRM from asterisks of camshafts. Turn camshafts by means of a key (1) so that cams did not press hydrojacks (see сопр. illustration). Turn right final and right inlet asterisks approximately on 6 teeths in the direction of rotation of the engine. The left inlet asterisk turn approximately on 10 teeths in the direction opposite to the direction of rotation of the engine. The left final asterisk turn approximately on 14 teeths in the direction of rotation of the engine.
7. Weaken covers of bearings of camshafts consistently so that to prevent any unilateral tension of a camshaft.
8. Remove covers of bearings and camshafts together with asterisks and regulators.

Installation

Deployment in the control provision of the right camshaft

1 — Fixing cores
3 — the Key


 PERFORMANCE ORDER

1. Grease hydrojacks and necks of bearings of camshafts.
2. Establish the left inlet and final camshafts with a chain of a drive of GRM on asterisks, but without a tension.
3. Oil covers of bearings, establish and tighten bolts of their fastening to 10 Nanometers.
4. Turn a camshaft by means of a key (3) and check ease of rotation.
5. Turn the left final camshaft by means of a key (3) in control situation. Establish a chain of a drive of GRM in earlier noted situation, previously having blocked a camshaft a core (1).
6. Turn the left inlet camshaft by means of a key (3) in control situation. Establish a chain of a drive of GRM in the early noted situation, previously having blocked a camshaft a core (1). The camshaft is in the situation "backlogs".
7. Establish the right inlet and final camshafts with a chain of a drive of GRM on asterisks, but without a tension.
8. Oil covers of bearings, establish and tighten bolts of their fastening to 12 Nanometers.
9. Turn camshafts and check ease of rotation.
10. Establish the right inlet camshaft in control situation. Establish a chain of a drive of GRM in earlier noted situation, previously having blocked a camshaft a core (1). The camshaft is in the situation "backlogs".
11. Establish the right final camshaft in control situation. Establish a chain of a drive of GRM in earlier noted situation, previously having blocked a camshaft a core (1).
12. Further installation is made as it should be, the return to removal.
13. Check the control provision of camshafts.