11 36 615 Removing and installing/replacing right camshaft adjustment unit (M62 VANOS from 9/98): Removal

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

Remove intake filter housing with air-mass flow sensor.

Remove fan impeller with fan clutch and fan cowl.

Remove both cylinder head covers.

Remove spark plugs.

CAUTION: In firing TDC position, the inlet camshaft 1 to 4 rotates in the teeth of the camshaft adjustment unit. This twisting is caused by the position of the cams and is not an indication for incorrect timing.

Fig 1: Identifying Inlet Camshaft Rotation

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Removal of the right camshaft adjustment unit is described separately from installation. Assembly sequence for removal and installation is different.

Fig 2: Removing Oil Lines On Left And Right Of Cylinder Head

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Remove oil lines on left and right of cylinder head.

Turn engine in direction of rotation as far as TDC firing position of first cylinder.

Fig 3: Rotating Camshaft To TDC (Overlap)

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E53

Secure crankshaft in TDC position with special tool 11 5 180.

Fig 4: Securing Crankshaft In TDC Position With Special Tool 11 5 180

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Remove chain tensioning piston. See 11 31 090 INSTALLING AND REMOVING/REPLACING PISTON FOR CHAIN TENSIONER (M62) .

Remove both timing case covers at top. See 11 14 080 REMOVING AND INSTALLING TIMING CASE COVER, TOP LEFT (M62 VANOS FROM 9/98) and 11 14 085 REMOVING AND INSTALLING TIMING CASE COVER, TOP RIGHT (M62 VANOS FROM 9/98) .

CAUTION: Left-hand threads.

Release nut (1) on sensor gear screw connection on cylinder bank 1 to 4.

Fig 5: Releasing Nut On Sensor Gear Screw Connection (Cylinder Bank 1 To 4)

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Remove sensor gear (2) on cylinder bank 1 to 4.

Fig 6: Removing Sensor Gear (Cylinder Bank 1 To 4)

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CAUTION: Left-hand threads.

Release nut (1) on sensor gear screw connection on cylinder bank 5 to 8.

Fig 7: Releasing Nut On Sensor Gear Screw Connection (Cylinder Bank 5 To 8)

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Remove sensor gear (2) on cylinder bank 5 to 8.

Fig 8: Removing Sensor Gear (Cylinder Bank 5 To 8)

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CAUTION: Do not damage the cylinder head.

If necessary, machine open-end wrench accordingly.

When releasing camshaft screw connection: grip camshaft at hexagon head.

Fig 9: Releasing Camshaft Screw Connection

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CAUTION: Left-hand threads.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 5 to 8 by approx. a half turn.

Fig 10: Slackening Screw Connection Of Exhaust Camshaft (Cylinder Bank 5 To 8)

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CAUTION: Left-hand threads.

When releasing camshaft screw connection: grip camshaft at hexagon head.

Slacken screw connection (1) of exhaust camshaft on cylinder bank 1 to 4 by approx. a half turn.

Fig 11: Slackening Screw Connection Of Exhaust Camshaft (Cylinder Bank 1 To 4)

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CAUTION: Left-hand threads.

When releasing camshaft screw connection: grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 5 to 8 by approx. a half turn.

Fig 12: Slackening Screw Connection Of Inlet Camshaft (Cylinder Bank 5 To 8)

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CAUTION: Left-hand threads.

When releasing camshaft screw connection: grip camshaft at hexagon head.

Slacken screw connection (2) of inlet camshaft on cylinder bank 1 to 4 by approx. a half turn.

Fig 13: Slackening Screw Connection Of Inlet Camshaft (Cylinder Bank 1 To 4)

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Align camshafts.

Attach special tool 11 2 445/11 2 441 to camshafts, cylinder bank 1 to 4.

Fig 14: Connecting Special Tool 11 2 445/11 2 441 To Camshafts

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Attach special tool 11 2 443 to special tool 11 2 445/11 2 441 and secure with special tool 11 2 444 via spark plug thread.

Fig 15: Connecting Special Tool 11 2 443 To Special Tool 11 2 445/11 2 441

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Align camshafts.

Attach special tool 11 2 446/11 2 442 to camshafts, cylinder bank 5 to 8.

Fig 16: Connecting Special Tool 11 2 446/11 2 442 To Camshafts (Cylinder Bank 5 To 8)

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Attach special tool 11 2 443 to special tool 11 2 446/11 2 442 and secure with special tool 11 2 444 via spark plug thread.

Fig 17: Connecting Special Tool 11 2 443 To Special Tool 11 2 445/11 2 441

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Compress chain tensioner on cylinder bank 1 to 4 and lock with special tool 11 3 310.

Fig 18: Compressing Chain Tensioner & Locking With Special Tool 11 3 310

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CAUTION: Left-hand threads.

Remove screws (1 and 2) on cylinder bank 1 to 4.

Fig 19: Removing Camshaft Screws (Cylinder Bank 1 To 4)

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Pull exhaust sprocket wheel (1) and camshaft adjustment unit (2) forwards until they are no longer secured on camshafts.

Fig 20: Releasing Exhaust Sprocket And Camshaft Adjustment Unit From Camshafts (Cylinder Bank 1 To 4)

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Feed out timing chain (1) forwards over sprocket wheel of camshaft adjustment unit (2).

Feed out exhaust sprocket wheel with secondary chain and camshaft adjustment unit (2).

Fig 21: Removing Timing Chain From Sprocket Wheel Of Camshaft Adjustment Unit

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