Checking camshaft timing (AT)

Preliminary work 

• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING INTAKE SILENCER HOUSING .
• Refer to REMOVING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
• Refer to REMOVING THE COVER ON LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
• Refer to REMOVING THE LEFT AND RIGHT FRONT-END STRUT .
• Refer to REMOVING FRONT CROSS CONNECTION .
• Refer to REMOVING THE REAR TOP CROSS CONNECTION .
• Refer to REMOVING THE FAN COWL .
• Refer to REMOVING THE SEAL FOR THE HOOD REAR .
• Refer to REMOVING ACOUSTIC COVER AT REAR .
• Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
• Refer to REMOVING LEFT AND RIGHT WIPER ARM .
• Refer to REMOVING THE COWL COVER .
• Refer to REMOVING TRAILING LINK AT SPRING BOLT .
• Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
• Refer to REMOVING THE SEALING FRAME ON LEFT AND RIGHT .
• Refer to REMOVING THE CENTER BULKHEAD LOWER PART .
• Refer to REMOVING BOTH ACTUATORS .
• Refer to REMOVING FRONT ENGINE ENCAPSULATION .
• Refer to REMOVING IGNITION COILS .
• Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE RAIL AND THE HIGH PRESSURE PUMP .
• Refer to REMOVING HIGH PRESSURE PUMP .
• Refer to REMOVING THE INJECTORS FOR CYLINDERS 1 TO 3 .
• Refer to REMOVING THE INJECTORS FOR CYLINDERS 4 TO 6 .
• Refer to REMOVING THE CYLINDER HEAD COVER .
• Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
• Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
• Refer to REMOVING THE STIFFENING PLATE .
• Refer to REMOVING STARTER MOTOR .

Courtesy of BMW OF NORTH AMERICA, INC.

• With the special tool, turn the engine 0 493 380 (11 6 480)  to the TDC firing position of cylinder 1.

  Blocking the crankshaft in the TDC firing position of the first cylinder (automatic transmission) 

• Version with automatic transmission: 
• Position the special tool 2 365 488  and secure with the corresponding screws.

  Block the crankshaft with the special tool 2 288 380  in the TDC firing position of the first cylinder.

Courtesy of BMW OF NORTH AMERICA, INC.

Check 

• Check whether the mark (1) of the exhaust camshaft and the mark (2) of the intake camshaft can be read from above.

Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» Marks (1) and (2) cannot be read from the top.

Measure

• Turn the camshafts to the correct position or readjust the valve timing.

Check 

• Check whether the center of the three flattened areas (1) on both camshafts points upwards. The special tool 2 358 122  can also be mounted if the camshafts are twisted by 180° (central flattened area points downwards).

Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» The center of the three flattened areas (1) does not point upwards.

Measure

• Turn the camshafts to the correct position such that the center of the three flattened areas (1) on both camshafts points upwards.

• Check whether the cam of the exhaust camshaft (1) and the intake camshaft (2) are positioned on cylinder 1 as shown.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Keep set of special tools 2 358 122  at hand:

  Number	Description
  1	Basic carrier
  2	Basic carrier screws on cylinder head
  3	Gauge to fix exhaust camshaft
  4	Gauge to fix intake camshaft
  5	Screw gauge on basic carrier

  Courtesy of BMW OF NORTH AMERICA, INC.

• Secure the basic carrier (1) of the special tool 2 358 122  with the screws (2) the cylinder head.
• Position gauge (3) with the recess on the exhaust camshaft and fix with the screws (5) on the basic carrier (1).
• Position gauge (4) with the recess on the intake camshaft and fix with the screws (5) on the basic carrier (1).
  NOTE: If the special tool 2 358 122  cannot be mounted, the valve timing must readjusted.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to DISASSEMBLING THE SPECIAL TOOL 2 358 122 .
• Refer to DISASSEMBLING THE SPECIAL TOOL 2 288 380 .
• Refer to INSTALLING STARTER MOTOR .
• Refer to INSTALLING CYLINDER HEAD COVER .
• Refer to PREPARING THE INJECTORS FOR INSTALLATION .
• Refer to INSTALLING THE INJECTORS FOR THE CYLINDERS 4 TO 6 .
• Refer to INSTALLING THE INJECTORS FOR THE CYLINDERS 1 TO 3 .
• Refer to PREPARING FOR THE INSTALLATION OF THE HIGH PRESSURE PUMP .
• Refer to INSTALLING HIGH PRESSURE PUMP .
• Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE RAIL AND THE HIGH-PRESSURE PUMP .
• Refer to INSTALLING THE IGNITION COILS .
• Refer to INSTALLING FRONT ENGINE ENCAPSULATION .
• Refer to INSTALLING BOTH ACTUATORS .
• Refer to INSTALLING CENTER BULKHEAD LOWER PART .
• Refer to INSTALLING THE SEALING FRAME ON LEFT AND RIGHT .
• Refer to INSTALLING THE CENTER COWL UPPER PART .
• Refer to INSTALLING TENSION STRUT ON SHOCK TOWER .
• Refer to INSTALLING WINDSHIELD PANEL COVER .
• Refer to INSTALLING LEFT AND RIGHT WIPER ARM .
• Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
• Refer to INSTALLING ACOUSTIC COVER AT REAR .
• Refer to INSTALLING THE FRONT HOOD SEAL AT THE REAR .
• Refer to INSTALLING FAN COWL .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING FRONT CROSS CONNECTION .
• Refer to INSTALLING FRONT-END STRUT ON LEFT AND RIGHT .
• Refer to INSTALLING THE COVER ON THE LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
• Refer to INSTALLING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
• Refer to INSTALLING INTAKE SILENCER HOUSING .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING THE THRUST FIELD .
• Refer to INSTALLING THE UNDERBODY PROTECTION OF THE STEERING GEAR OR THE FRONT THRUST FIELD .
• Refer to INSTALLING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
• Refer to CONNECTING NEGATIVE BATTERY CABLE .