11 12 006 Removing and installing/sealing right cylinder head cover (S63)

Special tools required: 

• 11 4 470 .

Necessary preliminary tasks: 

• Disconnect NEGATIVE BATTERY TERMINAL .
• Remove ACOUSTIC COVER .
• REMOVE right intake silencer housing
• Remove right INTERCOOLER .
• Disconnect FUEL DELIVERY LINE .
• Detach engine wiring harness and wiring harness for injectors and lay to one side
• Remove IGNITION COILS , cylinders 1-4
• Remove HIGH PRESSURE PUMP .
• Remove INJECTORS , cylinders 1-4
• Remove CATALYTIC CONVERTER for cylinders 1-4.
• Remove TURBOCHARGER , cylinders 1-4.
• Remove VACUUM PUMP .
• Remove washing water filler neck.

Remove retaining clips (1).

Fig 1: Identifying Retaining Clips

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Release screws (1).

Remove holder (2).

Tightening torque: 11 12 4AZ .

Fig 2: Identifying Holder And Screws

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Release screws (1).

Remove heat shield (2).

Fig 3: Identifying Heat Shield And Screws

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Release screw connections in the sequence (16 to 1).

Remove cylinder head cover.

Fig 4: Right Cylinder Head Cover Bolts Tightening/Loosening Sequence (S63)

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Clean sealing surface (1 and 2) with special tool 11 4 470 .

Fig 5: Identifying Sealing Surface And Seal

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Installation note: 

Replace profile seals (1 and 2).

Fig 6: Identifying Profile Seals Of Cylinder Head Cover

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Installation note: 

Replace sealing ring (1) for lubrication of vacuum pump.

Fig 7: Identifying Sealing Ring

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Installation note: 

It is important to insert screws (15 and 16) for exact positioning of the camshaft sensors.

Fit cylinder head cover.

Position screws (15 and 16).

Release screws again by a 90° turn.

Secure cylinder head cover in sequence (1 to 16) in two work steps.

Tightening torque 11 12 3AZ .

Fig 8: Right Cylinder Head Cover Bolts Tightening/Loosening Sequence (S63)

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Assemble engine.