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)
   - 12-cylinder petrol engines (M120.980/982)
      The air cleaner - 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 recirculation of the fulfilled gases - installation details
      Air supply pump
      Removal and installation of the top forward covers
      Heads of the block of cylinders
      Removal and installation of a cover of a chain of the GRM drive
      Replacement of a chain of the GRM drive
      The GRM drive - the general information, service of components
      Natyazhitel of a GRM drive chain
      Camshaft regulator
      Removal and installation of camshafts
      Check of phases of gas distribution
      Check and adjustment of position of camshafts
      Replacement of the directing plugs of valves
      Measurement of diameters of cylinders
      Removal and installation of pistons
      Check of rods
      Removal and installation of a bent shaft
      Removal and installation of the pallet of a case of the engine
      The oil level sensor switch - installation details
      The oil pump - a design and details of installation
   + 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 the top forward covers

Removal

Details of installation of the top forward covers

1a — the Clamp
3 — a distributor Rotor (engines 120.980)
4 — the Runner (engine 120.980)
5 — the Protective cover (engines 120.980)
5a — Consolidation (engine 120.980)
6 — Rubber laying
7 — the Sealing ring
8 — the Tank of the pump of the amplifier of steering

9a — a cooling system Branch pipe
11 — the Arm
12 — the Pump of the amplifier of steering
12a — the Adapter of the pump of the amplifier of steering
12b — Consolidation
13 — the Directing bridge
30 — the Right forward cover
30a — the Left forward cover


Details of installation of a basic arm

11 — the Arm
13, 14 — M8x85 Bolts


 PERFORMANCE ORDER

1. Uncover heads of the block of cylinders.
2. Remove a radiator.
3. Take off a generator drive belt.
4. Remove the thermostat case.
5. Shoot the directing video.
6. Remove a branch pipe (9a) of the cooling system.

7. Remove a rotor and the runner (4) distributors (series 120.980 engines).
8. Remove a protective cover and consolidation.
9. Lift the tank of the pump of the amplifier of steering up and remove it together with tubes.
10. Turn off an arm (11) and remove it.
11. Turn off an adapter (12a) of the pump of the amplifier of steering (12).
12. Turn off bolts (shooters) and remove forward covers.
13. Replace rubber laying and a sealing ring under a cooling system branch pipe.
14. Wipe sealing surfaces of a forward cover and a head of the block of cylinders.
15. Check laying of the directing bridge of a chain of the GRM drive for lack of traces of damages and if it is necessary, replace it.

Installation

At installation of the top covers be convinced that rubber laying is not displaced (shooters) down

1 — the Plug
2 — the Sealing edge of an epiploon
31 — the Finger of the directing lever


Bolts of fastening of the left top cover (the right top cover is established specularly)

1, 2 — M8x65 Bolts
3 — Bolts the left top M8x50 the right top M8x65


 PERFORMANCE ORDER

1. Apply sealant 002 989 7320 10 in a groove of a cover of a chain of the GRM drive of the left and right heads of cylinders. Insert new laying (without sealant) into a dry groove. Oil laying top motive. Grease with the same sealant contact surfaces of a head of the block of cylinders.

2. On engines 120.980 install the plug (1) on the final camshaft. Grease a sealing edge of a radial epiploon (2) with motive oil.
3. Establish forward covers. At their installation be convinced that rubber laying is not displaced down, chamfer the lower part of laying. On the left cover remove a stopper (31), a finger of the directing lever and reinstall them after installation of a cover.
4. Establish bolts of fastening of covers. Tighten the lower bolts the first.
5. Further installation is made as it should be, the return to removal. The cut on the runner (4) has to be combined with a finger on the camshaft.
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