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)
   - 6-cylinder diesel engines (OM603.971)
      The air cleaner - installation details
      Replacement of a belt of the drive of the generator
      Removal and installation of a natyazhitel of a belt of the drive of the generator
      Final collector - installation details
      GRM drive chain cover
      Camshaft
      Removal and installation of a head of the block of cylinders
      Verification of the control provision of the camshaft
      Replacement of a chain of the GRM drive
      The GRM drive - the general information, service of components
      Natyazhitel of a GRM drive chain - an installation detail
      Removal and installation of pistons
      Check of a state and replacement of rods
      Measurement of diameters of cylinders
      Removal and installation of sleeves of cylinders
      Check of a condition of a bent shaft
      Removal and installation of an asterisk of a bent shaft
      Removal and installation of the pallet of a case of the engine
      The oil level sensor switch - installation details
      Replacement of a chain of the drive of the oil pump
      Removal and installation of the oil pump
      Removal and installation of the case of an oil filter
   + 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






6-cylinder diesel engines (OM603.971)

Removal

Removal and installation of the engine

1 — the Forcing pump
2 — the Inlet pipe
3, 7 — Decorative panels
4 — an air cleaner Cover
5 — the Air inlet pipe
6 — Conducting of the engine
9 — the Oil heater
10 — the Pump of the amplifier of steering
11 — the Dual pump
12 — the conditioner Compressor
13 — a generator drive Belt
14 — the Fan
15 — the fan Coupling
16 — the Radiator
120 — the Battery

 PERFORMANCE ORDER

1. Remove the lower protective guard of the engine.
2. Disconnect system of release.
3. Disconnect a negative wire from the battery (120).
4. Disconnect an air inlet pipe (5).
5. Uncover the air cleaner (4).
6. Remove decorative panels (3) and (7).
7. Disconnect a branch pipe (2) from a turbocompressor.
8. Turn off AT tubes from clamps.
9. Disconnect a longitudinal rack and the bridge.
10. Disconnect a cowl cable.
11. Remove a radiator (16).
12. Weaken cooling system branch pipes between the engine and a body and disconnect them.
13. Remove the fan (14).
14. Remove the coupling of the fan (15).
15. Take off a belt of the drive of the generator (13).
16. Remove the compressor of the conditioner (12).
17. Disconnect an electrical wiring between the engine and a body.
18. Disconnect conducting sockets from sensors of pressure and level of oil.
19. Disconnect a starter electrical wiring.
20. Remove conducting of the engine.
21. Remove liquid from the tank of the pump (10) of the amplifier of steering.
22. Disconnect the forcing pump (1) or the dual pump (11) and branch pipes between the engine and a body.
23. Unscrew the oil heater (9).

Removal and installation of the engine

17 — a transmission Radiator
18 — the Sensor of provision of coupling
19 — a speedometer Shaft
20 — the gear shifting Lever
21 — Draft of gear shifting
22 — the Heat-shielding guard
23 — the Arm
24 — the engine Shock-absorber
25 — the Restrictive arm of the engine

492 — the Driveshaft
495 — the Intermediate bearing of the driveshaft
500 — the Nut
L2 — the Inductive sensor of speed
L3 — the speed Sensor
S16/1 — the Switch of blocking of a starter
Y31/1y1 — AT


 PERFORMANCE ORDER

1. Disconnect the pipeline of an otdatchik of provision of coupling (18).
2. Turn off a shaft of a speedometer (19) and the inductive sensor of a speedometer (L2).
3. Unscrew the sensor of the speed (L3).
4. Turn off an arm (23).
5. Disconnect a heat-shielding guard (22).
6. Unscrew the driveshaft (492).
7. Disconnect the intermediate bearing (495) of the driveshaft.
8. Weaken a nut (500) of the intermediate bearing.


Removal and installation of the engine

26 — the Back support of the engine
28 — the Forward support of the engine
50 — the Cross-piece


Design of a back support of a suspension bracket of the power unit (bottom view)

1 — the Support
2 — the Cross-piece
3 — an engine Arm
6 — M10x105 Bolt

7 — M8x15 Bolt
9 — M8x25 Bolt
10 — M10x25 Bolt
11 — Transmission


Design of a back support of a suspension bracket of the power unit (side view)

1 — the Support
2 — the Cross-piece
3 — the Arm
6 — M10x105 Bolt

7 — M8x15 Bolt
8 — M8x32 Bolt
9 — M8x25 Bolt


At installation of a back support track correctness of its arrangement


 PERFORMANCE ORDER

1. Turn off a cross-piece (50).
2. Attach the elevator to the engine.
3. Turn off a back basic arm of the engine (26). The design of a back support is shown on сопр. illustrations.
4. Turn off bolts of fastening of forward support of the engine (28) from below.
5. Lift the engine by means of the elevator.

Installation

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