Installing the VANOS exhaust central valve on the left

• Check camshaft positions of cylinder bank 2.

  The cams (1) must be in the position shown.

  The increment wheels (2) must form a line to the exhaust camshaft bearing cap and to the intake camshaft bearing cap.

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  NOTE: Description is for right component only. The procedure on the left side is identical.
  NOTE: To provide a better overview: Schematic diagram with partially hidden components.

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• Make sure that the ground surfaces (2) of the camshafts point up.
• Make sure that the rounded surfaces (1) point downwards to the cylinder head.
• Check and evaluate the timing once again.
• Position special tool 2 249 117 (1) on the camshafts of cylinder bank 2.
• Secure the camshafts using special tool 2 249 117 (1).
• Hand-tighten the special tool 2 249 117 (1) with 2 screws (2) of the cylinder head cover until it is against the cylinder head.

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• Replacement: Replace the VANOS central valve at left (1).

  Parts: VANOS central valve

• Make sure that the exhaust camshaft adjuster (2) is not removed from the camshafts.

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• Position VANOS central valves (1).
• Tighten VANOS central valves (1) hand-tight.

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• Position the slide rail (3) of the cylinder bank 2.
• Tighten down screw (2).
  TIGHTENING TORQUES SPECIFICATION
  
  

  Flat-head screw to the slide rail
  Flat-head screw M6x67	Tightening torque	10 Nm

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• Tighten down screw (1).
  TIGHTENING TORQUES SPECIFICATION
  
  

  Collar screw to the slide rail
  Collar screw M6x48	Tightening torque	10 Nm

  NOTE: RISK OF DAMAGE
  Damage to timing chain or timing chain drive.
  Turning the engine without chain tensioner or special tool can result in damage to the timing chain and timing chain drive.

  • Always turn the engine with the chain tensioner or the special tool.

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• Position the special tool 2 249 162 on the cylinder head and hand-tighten the screws (1).
• Exchange the screw (2) on the special tool 2 249 162 with an (M8x15) hexagon screw.
• Pretension special tool 2 249 162 using special tool 0 496 778 (00 9 460) at 0.6 Nm.

  The flexible shaft on the special tool 0 496 778 (00 9 460) must not come in contact with other components, otherwise the torque value is falsified.

  TIGHTENING TORQUES SPECIFICATION
  
  

  Preload timing chain
  	Tightening torque	0.6 Nm

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• Make straight marks on the VANOS central valves (1) and the VANOS adjusters (2) in the area of the hexagon head.

  The angle must be 60°.

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• Release the VANOS central valves (1) in the area of the hexagon head in a counterclockwise direction until the upper mark of the VANOS central valve matches with the lower mark.

  The rotational angle must be 60°.

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• Turn the engine counter-clockwise by 90° at central bolt.

  Make sure that the special tools 0 493 882 (11 9 190) (1) and 0 496 366 (11 8 570) (2) do not collide with other components.

• Remove the special tool 0 496 366 (11 8 570) (2).

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• Position the special tool 0 493 882 (11 9 190) (1) in the recess on the engine block.
• Turn the engine on the central bolt clockwise until the special tool 0 493 882 (11 9 190) (1) lies against special tool 0 496 366 (11 8 570) (2).
• Hand-tighten the special tool 0 496 366 (11 8 570) (2) with a screw (3) of the belt pulley on the vibration absorber.
• Remove the special tool 0 493 882 (11 9 190) (1).

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• Check the preload on the special tool 2 249 162 with the special tool 0 496 778 (00 9 460) with 0.6 Nm.

  The flexible shaft on the special tool 0 496 778 (00 9 460) must not come in contact with other components, otherwise the torque value is falsified.

  TIGHTENING TORQUES SPECIFICATION
  
  

  Preload timing chain
  	Tightening torque	0.6 Nm

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• Tighten VANOS central valves (1).
  TIGHTENING TORQUES SPECIFICATION
  
  

  VANOS central valve initial torque
  VANOS central valve	Joining torque	5 Nm

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• Turn engine on the central bolt until the special tool is aligned with the struts on the engine block.

  The special tool 0 496 366 (11 8 570) (3) must be secured to the vibration absorber by means of a screw of the belt pulley (2).

• Slide the crankshaft in the installation position with the special tool 0 493 882 (11 9 190) (1) on the bars and fix it.

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• Tighten VANOS central valves (1).
  TIGHTENING TORQUES SPECIFICATION
  
  

  VANOS central valve second tightening
  VANOS central valve	Joining torque	30 Nm
  	Joining torque	50 Nm

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• Position the special tool 0 490 504 (00 9 120) (1) on the VANOS exhaust central valve.

  The magnetic foot of the special tool 0 490 504 (00 9 120) (1) must be attached to a magnetic component in the engine compartment.

  The flexible element of the special tool 0 490 504 (00 9 120) (1) may not collide with other components.

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• Set the display of angle of rotation on the special tool 0 490 504 (00 9 120) to zero (arrow).

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• Tighten the VANOS intake central valve until the needle on the special tool 0 490 504 (00 9 120) is at 30°.
  TIGHTENING TORQUES SPECIFICATION
  
  

  VANOS central valve third tightening
  VANOS central valve	Angle of rotation	30°

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• Position the special tool 0 490 504 (00 9 120) (1) on the VANOS intake central valve.

  The magnetic foot of the special tool 0 490 504 (00 9 120) must be attached to a magnetic component in the engine compartment.

  The flexible element of the special tool 0 490 504 (00 9 120) (1) may not collide with other components.

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• Set the display of angle of rotation on the special tool 0 490 504 (00 9 120) to zero (arrow).

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• Tighten the VANOS central valve until the needle on the special tool 0 490 504 (00 9 120) is at 30° (arrow).
  TIGHTENING TORQUES SPECIFICATION
  
  

  VANOS central valve third tightening
  VANOS central valve	Angle of rotation	30°

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• Check camshaft positions of cylinder bank 2.

  The cams (1) must be in the position shown.

  The increment wheels (2) must form a line to the exhaust camshaft bearing cap and to the intake camshaft bearing cap.

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: Description is for right component only. The procedure on the left side is identical.
  NOTE: To provide a better overview: Schematic diagram with partially hidden components.
• Make sure that the ground surfaces (1) of the camshafts point up.
• Make sure that the rounded surfaces (2) point downwards to the cylinder head.

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• Check and evaluate the timing once again.
• Loosen screws (2).
• Remove the special tool 2 249 117 (1).

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• Remove special tool 0 493 882 (11 9 190) (1).
• Release the screw (2) of the belt pulley.
• Remove special tool 0 496 366 (11 8 570) (3).

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• Crank the engine on the central bolt twice in a clockwise direction until the installation position (MP) (1) of the vibration absorber aligns with the marks of the engine block.

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• Position special tool 0 496 366 (11 8 570) (3) on the vibration absorber.
• Position the special tool 0 493 882 (11 9 190) (1) in the special tool 0 496 366 (11 8 570) (3).

  The special tool 0 493 882 (11 9 190) (1) must not be inserted very far as collisions with other components may occur when turning the crankshaft.

• Rotate the engine on the central bolt in direction of engine rotation until the special tool aligns with the engine block marks.

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• Hand-tighten the special tool 0 496 366 (11 8 570) (3) onto the vibration absorber with a screw (2) of the belt pulley.
• Slide the crankshaft in the installation position with the special tool 0 493 882 (11 9 190) (1) at the marks and fix it.

Check

• Position special tool 2 249 117 (1) on the camshafts of cylinder bank 2.
• Check whether the camshafts can be fixed with the special tool 2 249 117 (1).
• Check whether the special tool 2 249 117 (1) can be brought in contact with the cylinder head using 2 screws (2) of the cylinder head cover.

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Result

» The camshafts can be fastened.

Measure

• Valve timings are OK.

Loosen screws (2).

Remove the special tool 2 249 117 (1).

Continue the repair in the next step.

Result

» The camshafts cannot be fastened.

Measure

• Adjust the timings of cylinder bank 2.
• Remove special tool 0 493 882 (11 9 190) (1).
• Release the screw (2) of the belt pulley.
• Remove special tool 0 496 366 (11 8 570) (3).

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• Loosen screws (2).
• Remove special tool 2 249 117 (1).

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