11 12 106 Removing And Installing Right Cylinder Head (N62 To 9/03): Removal

Removal of cylinder head is described separately from installation.

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

Fig 1: Identifying 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 2: Identifying 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 3: Rotating Eccentric Shaft

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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 4: Identifying Spring Mount

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NOTE: Illustration with engine removed.

Remove eccentric shaft sensor (2).

Fig 5: Identifying Eccentric Shaft Sensor

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Detach guide rail from cylinder head.

Fig 6: Identifying Guide Rail Screw

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Release screws between cylinder head and timing case cover.

Fig 7: Identifying 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: Right Cylinder Head Bolts Tightening/Loosening Sequence

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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 9: Identifying Cylinder Head Bolt

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

Fig 10: Rotating Eccentric Shaft

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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: Identifying 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 12: Placing Chain Tensioning Piston On Level Surface

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