Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car

Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ 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
   + 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 the GRM drive
      Replacement of a chain of the GRM drive
      Check of phases of gas distribution
      The GRM drive - the general information, service of components
      Removal and installation of the regulator of phases of gas distribution
      Removal and installation of camshafts
      Check and adjustment of control position of camshafts
      Removal and installation of valves
      Replacement of the 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 bent shaft
   + 12-cylinder petrol engines (M120.980/982)
   + 6-cylinder diesel engines (OM603.971)
   + 6-cylinder diesel engines (OM606.961)
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
+ Automatic 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 direction of an arrow (26).


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 direction of an arrow (26).
2. Establish a basic rack (2) with a support (7) in not the central situation.
3. Tighten a basic rack (2) two bolts of M7x35 (bolts of fastening of covers of bearings).
4. Remove hydrocompensators (3) from each cylinder.
5. Press attach the lever (9) with a persistent detail (5) to a support.
6. Attach a persistent detail (5) vertically to a clamp of a spring (15).
7. Fix a support (7) by a bolt (8).
8. Squeeze a spring (17).
9. Remove crackers of the valve (14).
10. Remove a spring of the valve (17) together with a clamp (15).
11. Replace an epiploon of the valve (19).
12. Remove the lower 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.