Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car

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.