11 12 106 Removing and installing right cylinder head (S63)

Special tools required: 

• 11 4 470 .
• 81 22 2 184 136.

Necessary preliminary tasks: 

• Remove front axle with engine and transmission. See COMPLETELY REMOVING FRONT AXLE WITH ENGINE AND TRANSMISSION (DOUBLE-CLUTCH GEARBOX)or COMPLETELY REMOVING FRONT AXLE WITH ENGINE AND TRANSMISSION (MANUAL GEARBOX) .

Removed engine on table lift special tool 81 22 2 184 136.

Graphic E72.

Fig 1: Identifying Engine On Lifting Table Special Tool (81 22 2 184 136)

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Necessary preliminary tasks: 

• Check TIMING .
• Remove INTAKE AND EXHAUST ADJUSTMENT UNIT on right side.
• Remove both exhaust manifolds. See LEFT EXHAUST MANIFOLD and RIGHT EXHAUST MANIFOLD .

Pull off vacuum hose to vacuum pump and to pressure converters (EPDW).

Release screws (1).

Vacuum pipe (2) can remain in vehicle.

Fig 2: Identifying Vacuum Pipe And Screws

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Remove screw (1) of guide rail.

Fig 3: Identifying Screw Of Guide Rail

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Release hose clamp (1) on bank 1.

Detach coolant hose (2).

Fig 4: Identifying Hose Clamp And Coolant Hose

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Release bolts (1) at front from cylinder head.

Fig 5: Identifying Bolts At Front Cylinder Head

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Twist camshaft (1) on hexagon head (2) by 180°.

All cylinder head bolts on the intake side are accessible in this position.

Fig 6: Identifying Camshaft, Hexagon Head, And Cylinder Head Bolts On Intake Side

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Release cylinder head bolts in sequence (10 to 1).

Remove all cylinder head bolts with washers.

Fig 7: Right Cylinder Head Bolts Tightening/Loosening Sequence (S63)

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Clean sealing faces of cylinder head and engine block; if necessary, remove gasket debris compound with special tool 11 4 470 . Make sure no gasket debris drops into the oil and coolant ducts.

Threaded holes in engine block must be free of dirt and oil. (risk of cracking)  .

Check CYLINDER HEAD FOR LEAKS .

Check CYLINDER HEAD SEALING FACE  for surface evenness.

Coat joint between engine block and gear case cover with DREI BOND 1209  2.1.

Fig 8: Locating Joint Between Engine Block And Timing Case Cover

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Check fitting sleeves (1) for damage and correct installation position.

Fit new cylinder head gasket (2).

Fig 9: Identifying Fitting Sleeves And Cylinder Head Gasket

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Installation note: 

Fit new cylinder head screws  .

Put the cylinder head on.

Do not wash off bolt coating.

Insert cylinder head bolts and initially tighten so that they are free of play.

Apply cylinder head bolts in the sequence 1 - 10 and fit with 30 Nm.

Fig 10: Right Cylinder Head Bolts Tightening/Loosening Sequence (S63)

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Installation note: 

Mark cylinder head bolt (1) with a colored mark for a better check of angle tightening.

Fig 11: Marking Cylinder Head Bolt

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Tighten cylinder head bolts in sequence (1 to 10).

Tightening torque: 11 12 1AZ .

Fig 12: Right Cylinder Head Bolts Tightening/Loosening Sequence (S63)

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Twist back camshaft (1) on hexagon head (2) by 180°.

Fig 13: Identifying Camshaft, Hexagon Head, And Cylinder Head Bolts On Intake Side

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Install and tighten down bolts (1) between cylinder head and timing case cover.

Tightening torque: 11 12 2AZ .

Fig 14: Identifying Bolts At Front Cylinder Head

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Insert screw (1) of guide rail and tighten down.

Tightening torque: 11 31 3AZ .

Fig 15: Identifying Screw Of Guide Rail

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If necessary, install camshafts. See RIGHT EXHAUST CAMSHAFT and RIGHT INTAKE CAMSHAFT .

Install INTAKE AND EXHAUST CAMSHAFT ADJUSTERS on right side.

Assemble engine.