Adjusting the timing at cylinders 5-8

• Press back the chain tensioner (2)  using the tensioning rail.
• Lock the piston on the chain tensioner (2)  using the special tool 0 491 012 (11 4 120)  .
• Loosen the screws (1)  and remove the chain tensioner (2)  .

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• Adjust special tool 0 496 778 (00 9 460)  to 0.6 Nm.
• Pretension timing chain with special tool 2 249 162  .

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• Loosen screws in the order (4)  to (1)  . Remove the belt pulley.

• Note the identification MP (= installation position).

  The identification MP (= installation position) is important for the installation of the special tool 0 496 366 (11 8 570). 

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• Crank the engine further on the central bolt until special tool 0 493 882 (11 9 190)  can be positioned in the timing case cover.

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  NOTE: Special tools can only be mounted if the ground surfaces point upward (see arrow).

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• Position special tool 2 249 144  on the intake camshaft of bank 5-8 in the direction of the arrow and secure with one screw (1)  each.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Special tool, gauge to cylinder head
  M6x35	Tightening torque	10 Nm

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• Position special tool 2 249 159  on the exhaust camshaft and screw to special tool 2 249 144  .

Special tool to special tool, gauges
M6x20	Tightening torque	10 Nm

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• Align the intake and exhaust camshafts so that the ground surfaces of the camshaft point upwards.

  All special tools 2 249 117  must be mounted for the screw connection.

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• Crank the engine backwards by 10° using the central bolt.

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• Insert special tool 0 493 882 (11 9 190)  at the timing case.
• Crank the crankshaft on the central bolt using a reversible ratchet (2)  in the direction of engine rotation until it is in contact with special tool 0 493 882 (11 9 190)  , see figure. 

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• Insert the VANOS central valve (1)  of the intake side.

1. VANOS central valve of variable camshaft timing control to camshaft
M22x1	Joining torque	5 Nm

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• Insert the VANOS central valve (1)  of the exhaust side.

1. VANOS central valve of variable camshaft timing control to camshaft
M22x1	Joining torque	5 Nm

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• Crank the engine further on the central bolt until special tool 0 493 882 (11 9 190)  can be positioned in the timing case cover.

  The engine is now in the crankshaft position of 150 degrees before the TDC firing position of cylinder 1.

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• Insert the VANOS central valve (1)  of the intake side.

VANOS central valve variable camshaft timing control to camshaft
M22x1	2. Joining torque	30 Nm
	3. Joining torque	50 Nm
	4. Angle of rotation	30°

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• Insert the VANOS central valve (1)  of the exhaust side.

VANOS central valve variable camshaft timing control to camshaft
M22x1	2. Joining torque	30 Nm
	3. Joining torque	50 Nm
	4. Angle of rotation	30°

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• Install the chain tensioner (2)  .
• Secure screws (1)  .

Chain tensioner to cylinder head
M7	Joining torque	13 Nm

• Remove special tool 0 491 012 (11 4 120)  .
• Position the timing case cover (2)  .

Secure screws (1)  .

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End cover (oil) to cylinder head
M6x20	Tightening torque	10 Nm

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