11 31 01 Replacing left camshaft (M62 up to 9/98): Removal

The removal of the camshaft is described separately from the installation. Assembly sequence for removal and installation is different.

Remove all oil lines to left and right cylinder head.

Fig 1: Removing All Oil Lines To Left And Right Cylinder Head

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Crank engine at central bolt in direction of rotation until the first cylinder is in TDC position.

Fig 2: Cranking Engine At Central Bolt In Direction Of Rotation

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Unfasten the accessible three screws on exhaust and inlet camshafts on cylinder bank 1 to 4 approx. 1/2 a turn.

Fig 3: Unfastening Accessible Three Screws On Exhaust And Inlet Camshafts On Cylinder Bank 1 To 4

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Crank engine once enginewise up to TDC position of first cylinder.

Fig 4: Cranking Engine To TDC Position Of First Cylinder

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Fig 5: Bracing Camshaft On Hex Head

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Unfasten remaining three screws on exhaust and inlet camshafts on cylinder bank 1 to 4 approx. 1/2 a turn.

Fig 6: Unfastening Remaining Three Screws On Exhaust And Inlet Camshafts On Cylinder Bank 1 To 4

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Remove piston for chain tensioner, refer to 11 31 090 INSTALLING AND REMOVING / REPLACING PISTON FOR CHAIN TENSIONER (M62) .

Remove timing case cover, top left, refer to 11 14 080 REMOVING AND INSTALLING TIMING CASE COVER, TOP LEFT (M62 VANOS FROM 9/98) .

Remove sprocket on left inlet camshaft (cylinder bank 5 to 8). Secure chain to prevent it from dropping.

Fig 7: Removing Sprocket On Left Inlet Camshaft

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Crank engine counter-enginewise on central screw into 45° before TDC position.

Note markings!

Fig 8: Cranking Engine Counter-Enginewise On Central Screw

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Unfasten sprocket wheel screw connection.

Fig 9: Unfastening Sprocket Wheel Screw Connection

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To relieve load on chain, compress chain tensioner.

Fig 10: Compressing Chain Tensioner

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Lock chain tensioner with special tool 11 3 310.

Fig 11: Locking Chain Tensioner With Special Tool 11 3 310

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Lift off both sprockets completely with chain.

Fig 12: Lifting Off Both Sprockets Completely With Chain

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Move camshafts on cylinder bank 5 to 8 into installation position.

Rotate exhaust and intake camshafts with special tool 11 3 430.

Fig 13: Rotating Exhaust And Intake Camshafts With Special Tool 11 3 430

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In insertion position (removal position), recesses in camshafts point approx. 30... 40° downwards from the surface of the cylinder head.

Fig 14: Identifying Camshaft Position 30 And 40 ° Downwards From Surface Of Cylinder Head While Removing Camshaft

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Evenly tighten down bearing covers on camshafts for cylinder bank 5 to 8 in 1/2 turn steps from outside to inside.

Remove bearing covers and place to one side in orderly fashion.

Lift out camshafts.

Fig 15: Removing Camshaft Bearing Cap Bolts

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