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

WARNING: This page is about a different variant/trim than selected.

Fig 1: Removing Check Valve, Tube And Spacer Bushing

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Removal of cylinder head is described separately from installation.

Remove inlet and exhaust adjustment unit on right side.

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

Fig 2: Slackening Off Chain Tensioning Piston

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

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

Fig 3: Removing Pretension Torsion Spring With Cable Strap

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

Fig 4: Rotating Eccentric Shaft At Dihedral Head

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

Release screw.

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

Fig 5: Feeding Spring Mount Upwards Out Of Locating Pin

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NOTE: Illustration with engine removed.

Remove eccentric shaft sensor (2).

Fig 6: Removing Eccentric Shaft Sensor

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Detach guide rail from cylinder head.

Fig 7: Detaching Guide Rail From Cylinder Head

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Release screws between cylinder head and timing case cover.

Fig 8: 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 9: Slackening Off Cylinder Head Bolts

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

Remove cylinder head bolt (7).

Fig 10: Removing Cylinder Head Bolt

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

Replacement:

Reinstall screw plug of inlet VANOS pressure oil duct.

Fig 11: Rotating Eccentric Shaft At Dihedral Head

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Remove remaining cylinder head bolts.

Lift off cylinder head.

Lift off cylinder head gasket.

Remove chain tensioning piston (1).

Fig 12: Removing Chain Tensioning Piston

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

Repeat this procedure twice.

Fig 13: Placing Chain Tensioning Piston On Level Surface

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