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


Removal and installation of valves


Details of installation of valves

2 — the Basic rack
3 — Gidrokompensator
5 — the Persistent detail
6 — Nippers

7 — the Support
8, 23 — the Bolt
9 — Press the lever
14 — Crackers
15 — the Top clamp of a spring

Establish a head of the block of cylinders (87) on the basis (24). Establish an insert (25) on the basis (24) in the arrow (26) direction.


1. Tighten a head of the block of cylinders (87) to the basis (24) by means of bolts of fastening of a head of the block of cylinders in front and behind in the arrow (26) direction.
2. Establish a basic rack (2) with a support (7) in not the central situation.
3. Tighten a basic rack (2) two bolts М7х35 (bolts of fastening of covers of bearings).
4. Remove hydrojacks (3) from each cylinder.
5. Press the lever (9) with a persistent detail (5) attach to a support.
6. Attach a persistent detail (5) vertically to a clamp of a spring (15).
7. Fix a support (7) bolt (8).
8. Compress a spring (17).
9. Remove valve (14) crackers.
10. Remove a valve (17) spring together with a clamp (15).
11. Replace a valve (19) epiploon.
12. Remove the bottom clamp of a spring (20).
13. Remove a head of the block of cylinders (87) from the basis and remove valves (21).


Installation is made as it should be, the return to removal.