Adjust the timing of the camshaft

Preliminary work 

• Refer to BLOCKING THE CRANKSHAFT IN HE TDC FIRING POSITION OF CYLINDER 1 .
• Refer to REMOVING CHAIN TENSIONER .

Precondition 

Crankshaft is disconnected and blocked.

Engine is in TDC firing position of cylinder 1.

• Get the set of special tools 2 456 372 ready.

  Number	Description
  1	Basic carrier
  2	Setting gauge 0.7° for adjusting the intake camshaft
  3	Setting gauge 0.5° for adjusting the exhaust camshaft
  4	Basic carrier screws on cylinder head
  5	Screw gauge on basic carrier

  Courtesy of BMW OF NORTH AMERICA, INC.

• Use the setting gauge 0.7° (1)  from the special tool kit 2 456 372 to adjust the intake camshaft.
• Use the setting gauge 0.5° (2)  from the special tool kit 2 456 372 to adjust the exhaust camshaft.

  Courtesy of BMW OF NORTH AMERICA, INC.

• To release the VANOS central valve (1)  , use the reversible ratchet (2)  from the special tool 0 496 855 with the special tool 2 450 487 .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Position the basic carrier (1)  from the set of special tools 2 456 372 on the cylinder head.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten the screws (1)  from special tool set 2 456 372 on the basic carrier (2)  .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Basic carrier to cylinder head
  M6	Tightening torque	8 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Position the setting gauge 0.7° (1)  from the special tool kit 2 456 372 between the basic carrier (2)  from the set of special tools 2 456 372 and the intake camshaft (3)  .
• If necessary, crank the engine at the crankshaft using special tool 0 493 380 (11 6 480). 
• Tighten the screws (4)  from special tool set 2 456 372 .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Test gauge to basic carrier
  M6	Tightening torque	8 Nm

• Release the VANOS central valve (5)  of the intake adjuster.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Position the setting gauge 0.5° (1)  from the special tool kit 2 456 372 between the basic carrier (2)  from the set of special tools 2 456 372 and the exhaust camshaft (3)  .
• If necessary, crank the engine at the crankshaft using special tool 0 493 380 (11 6 480). 
• Tighten the screws (4)  from special tool set 2 456 372 .
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Test gauge to basic carrier
  M6	Tightening torque	8 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Release the VANOS central valve (5)  of the exhaust camshaft adjuster.
• Make sure the flattened areas (1)  on the intake camshaft and the exhaust camshaft are pointing upwards at an angle.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Rotate the intake camshaft (E)  and the exhaust camshaft (A)  so that the marks (1)  are legible from above.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Make sure the cam (1)  on the exhaust camshaft on cylinder  1 is pointing slightly to the inside right at an angle.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Make sure the cam (1)  on the intake camshaft on cylinder  1 is pointing leftward at an angle.

  Courtesy of BMW OF NORTH AMERICA, INC.