Removal and installation the engine (Mercedes-Benz S-Class W140)

Removal

1 - Pressure pump; 2 - Inlet pipe; 3, 7 - Decorative panels; 4 - Air cleaner cover; 5 - Air intake pipe; 6 - Engine wiring; 9 - Oil radiator; 10 - Power steering pump 11 - Twin pump; 12 - Air conditioning compressor; 13 - Generator drive belt; 14 - Fan; 15 - Fan clutch; 16 - Radiator; 120 - Battery

1. Remove the lower engine guard.

2. Disconnect the exhaust system.

3. Disconnect the negative battery cable (120).

4. Disconnect the air inlet pipe (5).

5. Remove the air cleaner cover (4).

6. Remove the decorative panels (3) and (7).

7. Disconnect the pipe (2) from the turbocharger.

8. Unscrew the AT tubes from the clamps.

9. Disconnect the longitudinal pillar and bridge.

10. Disconnect the hood cable.

11. Remove the radiator (16).

12. Loosen the cooling system hoses between the engine and the body and disconnect them.

13. Remove the fan (14).

14. Remove the fan clutch (15).

15. Remove the generator drive belt (13).

16. Remove the air conditioning compressor (12).

17. Disconnect the electrical wiring between the engine and the body.

18. Disconnect the wiring connectors from the oil pressure and level sensors.

Text republished from the website [mercedesman.ru]

19. Disconnect the starter wiring.

20. Remove the engine wiring.

21. Remove the fluid from the power steering pump reservoir (10).

22. Disconnect the injection pump (1) or dual pump (11) and the pipes between the engine and the body.

23. Unscrew the oil radiator (9).

17 - Gearbox radiator; 18 - Clutch position sensor; 19 - Speedometer shaft; 20 - Gear shift lever; 21 - Gear shift rod; 22 - Heat shield; 23 - Bracket; 24 - Engine shock absorber; 25 - Engine limiting bracket; 492 - Cardan shaft; 495 - Intermediate bearing of the propeller shaft; 500 - Nut; L2 - Inductive speed sensor; L3 - Speed sensor; S16/1 - Starter interlock switch; Y31/1y1 - AT

1. Disconnect the pipe from the clutch position sensor (18).

2. Unscrew the speedometer shaft (19) and the inductive speedometer sensor (L2).

3. Unscrew the speed sensor (L3).

4. Unscrew the bracket (23).

5. Disconnect the heat shield (22).

6. Unscrew the cardan shaft (492).

7. Disconnect the intermediate bearing (495) of the propeller shaft.

8. Loosen the nut (500) of the intermediate bearing.

26 - Rear engine mount; 28 - Front engine mount; 50 - Crossbar

Design of the rear support of the powertrain suspension (bottom view)
1 - Support; 2 - Crossbar; 3 - Engine bracket; 6 - Bolt M10x105; 7 - Bolt M8x15; 9 - Bolt M8x25; 10 - Bolt M10x25; 11 - Transmission

Design of the rear support of the powertrain suspension (side view)
1 - Support; 2 - Crossbar; 3 - Bracket; 6 - Bolt M10x105; 7 - Bolt M8x15; 8 - Bolt M8x32; 9 - Bolt M8x25

When installing the rear support, make sure it is positioned correctly

1. Unscrew the crossbar (50).

2. Attach the lift to the engine.

3. Unscrew the rear engine support bracket (26). The design of the rear support is shown in the accompanying illustrations.

4. Unscrew the bolts securing the front engine mounts (28) from below.

5. Raise the engine using a lift.