11 12 106 Removing and installing right cylinder head (N62 to 9 / 03): Removal

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Removal of cylinder head is described separately from installation.

Remove inlet and exhaust adjustment unit on right side. Refer to 11 36 048 Removing and installing/replacing inlet and exhaust adjustment units on right side (N62) .

Slacken off chain tensioning piston (1) by approx. one turn.

Fig 1: Locating Chain Tensioning Piston

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Rotate eccentric shaft at dihedral head as illustrated in order to reduce tension on torsion spring (1).

Fig 2: Reducing Tension On Torsion Spring

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Pretension torsion spring (1) with a cable strap (2), feed out from roller (3) and carefully relieve tension.

Rotate eccentric shaft at dihedral head as shown in illustration back to minimum stroke position.

Fig 3: Rotating Eccentric Shaft Back To Minimum Stroke Position

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NOTE: Spring mount (1) has a locating pin opposite screw.

Fig 4: Locating Spring Mount

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Release screw.

Feed spring mount (1) upwards out of locating pin.

NOTE: Illustration with engine removed.

Remove eccentric shaft sensor (2).

Fig 5: Removing Eccentric Shaft Sensor

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Detach guide rail from cylinder head.

Fig 6: Detaching Guide Rail From Cylinder Head

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Release screws between cylinder head and timing case cover.

Fig 7: Releasing Screws Between Cylinder Head And Timing Case Cover

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NOTE: At narrow points, use a socket with 3/8" drive and a short extension.

Slacken off cylinder head bolts by one turn in sequence 10 ... 1.

Fig 8: Slackening Cylinder Head Bolts In Sequence

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Rotate eccentric shaft at dihedral head as shown in illustration and hold in this position.

Fig 9: Rotating Eccentric Shaft

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Remove cylinder head bolt (7).

Rotate eccentric shaft at dihedral head as shown in illustration back to minimum stroke position.

Fig 10: Rotating Eccentric Shaft Back To Minimum Stroke Position

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Remove remaining cylinder head bolts.

Lift off cylinder head.

Lift off cylinder head gasket.

Remove chain tensioning piston (1).

Fig 11: Removing Chain Tensioning Piston

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Place chain tensioning piston (1) on a level surface and compress slowly and carefully.

Fig 12: Compressing Chain Tensioning Piston

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Repeat this procedure twice.