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

Removal

Removal and installation of engines M120.980

1. Raise the hood.

2. Disconnect the negative cable from the battery.

3. Remove the air filter together with the air flow meter.

4. Remove the lower engine guard.

5. Remove the radiator.

6. Unscrew the transmission fluid oil lines.

7. Attach the protective plate to the air conditioner condenser.

8. Disconnect the drive cable from the hood lock on the left.

9. Disconnect the cooling system pipes at the rear of the cylinder head.

10. Remove the fan clutch together with the fan.

11. Remove the generator drive belt.

12. Disconnect the fuel lines (60).

13. Remove the wire cover (6).

14. Disconnect the engine wiring (all connectors).

15. Remove the drive cable (98) (throttle control).

16. Disconnect the vacuum tubes from the vacuum booster on the intake manifold.

17. Remove the fluid from the power steering pump reservoir.

Removal and installation of engines M120.980

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1. Disconnect the pipes from the power steering pump (26), (27), (28) and (29).

2. Unscrew the pipeline mounting bracket.

3. Unscrew the pipes (13) and (14) from the oil radiator and the right cooling pipe (13) from the radiator cross member.

4. Remove the oil pressure sensor (B5).

5. Disconnect the air conditioning compressor (11) with the attached tube.

6. Remove the exhaust pipe (7) as an assembly.

7. Drain the coolant.

Removal and installation of engines M120.980

1. Unscrew the starter wiring shield (32).

2. Disconnect the chain wire (30) from the starter.

3. Remove the cardan shaft flexible joint.

4. Unscrew the ground wire from the gearbox.

Design of the rear support of the powertrain suspension
1 - Elastic element
2 - Torsion limiter
3 - Bracket

1. Remove the rear bracket (10) without the engine support.

2. Disconnect the gear shift lever (9) from the gearbox.

3. Disconnect the electrical wiring from the gearbox.

Removal and installation of engines M120.980

Design of the front support of the powertrain suspension
1 - Bracket; 2 - Bolt M10ґ55; 3 - Heat shield; 4 - Support; 5 - Holder; 6 - Bolt M8ґ42; 7 - Twist limiter

1. Unscrew the front engine support (12) on both sides. The design of the front support is shown in the accompanying illustration.

2. Attach the lift to the engine.

3. Raise the engine and gearbox until the compressor (11) can be removed from the bracket on the engine with the pipes attached.

4. Raise the engine and remove it.