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)
   - 12-cylinder petrol engines (M120.980/982)
      Air purifier - installation details
      Covers of heads of the block of cylinders
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
      The valve of a retsirkulyatsiya of the fulfilled gases - installation details
      Pump of supply of air
      Removal and installation of the top forward covers
      Heads of the block of cylinders
      Removal and installation of a cover of a chain of a drive of GRM
      Replacement of a chain of a drive of GRM
      GRM drive - the general information, service of components
      Natyazhitel of a chain of a drive of GRM
      Camshaft regulator
      Removal and installation of camshafts
      Check of phases of a gazoraspredeleniye
      Check and adjustment of provision of camshafts
      Replacement of directing plugs of valves
      Measurement of diameters of cylinders
      Removal and installation of pistons
      Check of rods
      Removal and installation of a cranked shaft
      Removal and installation of the pallet of a case of the engine
      The sensor switch of level of oil - installation details
      The oil pump - a design and installation details
   + 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



12-cylinder petrol engines (M120.980/982)

Removal

Removal and installation of M120.980 engines


 PERFORMANCE ORDER

1. Lift a cowl.
2. Disconnect a negative wire from the battery.
3. Remove the air filter together with a measuring instrument of an air stream.
4. Remove the bottom protective guard of the engine.
5. Remove a radiator.
6. Unscrew AT transmission liquid oil pipelines.
7. Attach a protective plate on the conditioner condenser.
8. Disconnect a driving cable from the cowl lock at the left.
9. Disconnect branch pipes of system of cooling in a back part of a head of the block of cylinders.
10. Remove the fan coupling together with the fan.
11. Remove a belt of a drive of the generator.
12. Disconnect топливопроводы (60).
13. Uncover (6) wires.
14. Disconnect engine conducting (all sockets).
15. Remove a driving cable (98) (managements of a butterfly valve).
16. Unscrew vacuum tubes from the vacuum amplifier on the inlet pipeline.
17. Take liquid from the tank of the pump of the amplifier of a steering.


Removal and installation of M120.980 engines


 PERFORMANCE ORDER

1. Disconnect pipelines from the pump of the amplifier of a steering (26), (27), (28) and (29).
2. Unscrew an arm of fastening of pipelines.
3. Unscrew pipelines (13) and (14) from an oil radiator and the right tube of cooling (13) from a cross-section beam of a radiator.
4. Remove the sensor of pressure of oil (В5).
5. Disconnect the conditioner (11) compressor with the attached tube.
6. Remove an exhaust pipe (7) assembled.
7. Merge cooling liquid.


Removal and installation of M120.980 engines


 PERFORMANCE ORDER

1. Unscrew a guard (32) conductings of a starter.
2. Disconnect a wire of a chain (30) from a starter.
3. Remove the flexible hinge of the driveshaft.
4. Unscrew a connection wire on "mass" of a transmission.


Design of a back support of a suspension bracket of the power unit

1 Elastic element
2 Limiter of torsion
3 Arm


 PERFORMANCE ORDER

1. Remove a back arm (10) without an engine support.
2. Disconnect the lever of gear shifting (9) from a transmission.
3. Disconnect electroconducting from a transmission.


Removal and installation of M120.980 engines


Design of a forward support of a suspension bracket of the power unit

1 — the Arm
2 — Bolt М10ґ55
3 — Termozashchitny the screen
4 — the Support
5 — the Holder
6 — Bolt М8ґ42
7 — the twisting Limiter


 PERFORMANCE ORDER

1. Unscrew a forward support of the engine (12) from both parties. The design of a forward support is shown on сопр. illustrations.
2. Attach the lift to the engine.
3. Lift the engine and a transmission until the compressor (11) cannot a life is removed from an arm on the engine with the attached tubes.
4. Lift the engine and remove it.

Installation

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