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


8-cylinder petrol engines (M119.970/981 and M119.971/981)

Removal and engine installation


Removal and engine installation

1 — the Radiator of system of cooling
2 — the Fan
3 — the Belt of a drive of the compressor
4 — the Air filter
5 — the Basic rack
6 — the Lambda probe

7 — release System
8 — a transmission Flange
10 — the Back support of the engine
11 — the conditioner Compressor
12 — the Forward support of the engine
13, 14 — Oil pipelines


1. Disconnect a negative wire from the battery.
2. Merge cooling liquid.
3. Disconnect the left driving cable of opening of a cowl.
4. Disconnect heater pipelines in a back part of the inlet pipeline and the block of cylinders.
5. Remove the fan coupling together with the fan (2).
6. On models with the conditioner remove a belt of a drive (3).
7. Disconnect топливопроводы and engine electroconducting.
8. Disconnect vacuum tubes.
9. Disconnect a cable of management of a butterfly valve
10. Disconnect a vacuum tube from the vacuum amplifier of brakes.
11. Remove liquid from the tank of the pump of the amplifier of a steering.
12. Disconnect pipelines from the pump of the amplifier of a steering.
13. On models with the air pump disconnect the conducting socket from the pump.
14. Unscrew oil pipelines (13) and (14) from an oil radiator.
15. Remove the compressor (11) together with the attached pipelines.
16. Disconnect the weeding socket from a lambda probe (6).
17. Remove system of release (7) assembled.
18. Disconnect the driveshaft from a transmission flange (8).
19. Having disconnected a connection wire on "mass" of a transmission.
20. Remove a back support of the engine (10).
21. Disconnect the gear shifting lever.
22. Disconnect conducting sockets from a transmission.
23. Unscrew bolts of fastening (12) engines in front.
24. Attach eyes to the engine.
25. Establish the engine at an angle and take it.


Adjust a gear shifting cable. Check idling turns. Check and fill in oil and cooling liquid. Start the engine and be convinced of absence of leaks.