Adjust the timing of the camshaft

Preliminary work 

• Refer to BLOCKING THE CRANKSHAFT IN THE TDC FIRING POSITION OF CYLINDER 1 .
• Refer to REMOVING COWL LOWER PART .
• Refer to REMOVING THE CENTER STRUT BRACE .
• Refer to REMOVING THE HOLDER OF THE POSITIVE BATTERY CABLE .
• Refer to REMOVING CHAIN TENSIONER .

Precondition 

Crankshaft is disconnected and blocked.

The engine is in the TDC firing position of cylinder 1.

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

  Number	Description
  1	Basic carrier
  2	0.7° setting gauge to adjust the intake camshaft
  3	0.5° setting gauge to adjust 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 set of special tools 2 456 372 to adjust the intake camshaft.
• Use the setting gauge 0.5° (2) from the set of special tools 2 456 372 to adjust the exhaust camshaft.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Have the special tool 0 496 855 ready.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Have the special tool 2 450 487 ready.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Have the special tool 2 469 138 ready.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Prepare all special tools and commercially available tools.

  Number	Description
  1	Standard torque wrench
  2	Wrench socket set 2 450 487
  3	Reversible ratchet 0 496 855
  4	Commercially available reduction
  5	adapter 2 469 138

  Courtesy of BMW OF NORTH AMERICA, INC.

• Assemble all the special tools and commercially available tools as shown.

  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 the set of special tools  2 456 372  on the basic carrier (2)  .

Courtesy of BMW OF NORTH AMERICA, INC.

• Position setting gauge 0.7° (1) from the set of special tools 2 456 372 between basic carrier (2) from the set of special tools 2 456 372 and 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 the set of special tools  2 456 372  .

Courtesy of BMW OF NORTH AMERICA, INC.

• Release the VANOS central valve (5) of the intake adjuster.
• Position setting gauge 0.5° (1) from the set of special tools 2 456 372 between basic carrier (2) from the set of special tools 2 456 372 and 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 the set of special tools  2 456 372  .

Courtesy of BMW OF NORTH AMERICA, INC.

• Release the VANOS central valve (5) of the exhaust camshaft adjuster.
• Ensure that the flattened areas (1) on the intake camshaft and the exhaust camshaft point upwards.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Turn the intake camshaft (E) and the exhaust camshaft (A) such that the marks (1) can be read from the top.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Ensure that the cam (1) on the exhaust camshaft on cylinder 1  points to the inside right at a slight angle.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Ensure that the cam (1) on the intake camshaft on cylinder 1  points to the inside left at an angle.

Courtesy of BMW OF NORTH AMERICA, INC.