Removing the exhaust camshaft for cylinders 1 to 6

Preliminary work 

• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
• Refer to REMOVING FRONT ORNAMENTAL GRILLE .
• Refer to PARTIALLY REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER .
• Refer to REMOVING FRONT BUMPER COVER .
• Refer to REMOVING BOTH HEADLIGHTS .
• Refer to REMOVING THE CENTER TOP CROSS CONNECTION .
• Refer to REMOVING THE FANFARE HORN ON THE LEFT .
• Refer to REMOVING THE FANFARE HORN TOWARDS THE RIGHT .
• Refer to REMOVING RIGHT INTAKE SILENCER HOUSING .
• Refer to REMOVING RIGHT AIR DUCT .
• Refer to REMOVING LEFT INTAKE SILENCER HOUSING .
• Refer to REMOVING THE LEFT-HAND AIR DUCT .
• Refer to REMOVING LEFT INTAKE PORT .
• Refer to REMOVING THE REAR TOP CROSS CONNECTION .
• Refer to REMOVING FAN COWL .
• Refer to REMOVING LEFT AND RIGHT WIPER ARM .
• Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
• Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
• Refer to REMOVING THE SEAL FOR THE HOOD REAR .
• Refer to REMOVING THE COWL COVER .
• Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
• Refer to REMOVING TRAILING LINK AT SPRING BOLT .
• Refer to REMOVING LEFT THROTTLE VALVE ASSEMBLY .
• Refer to PARTIALLY LOOSENING THE LEFT-HAND CHARGE AIR COOLER .
• Refer to REMOVING THE RIGHT THROTTLE BODY .
• Refer to PARTIALLY LOOSENING THE RIGHT-HAND CHARGE AIR COOLER .
• Refer to REMOVING THE ENGINE VENTILATION LINE FROM THE INTAKE SYSTEM .
• Refer to REMOVING THE TANK VENT LINE .
• Refer to REMOVING THE INTAKE PLENUM .
• Refer to REMOVING THE RIGHT-HAND VENTILATION LINE .
• Refer to REMOVING IGNITION COILS .
• Refer to REMOVING COVER FOR THE RIGHT DME CONTROL UNIT .
• Refer to DISCONNECTING ALL CONNECTORS FROM THE DME CONTROL UNIT FOR CYLINDERS 1 TO 6 AND FROM THE INTEGRATED POWER SUPPLY MODULE (PDM) .
• Refer to PARTIALLY RELEASING THE WIRING HARNESS FROM RIGHT CYLINDER HEAD COVER .
• Refer to REMOVING TOP RIGHT CLEAN AIR PIPE .
• Refer to REMOVING RIGHT CHARGE AIR PIPE .
• Refer to REMOVING THE RIGHT HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE PUMP AND THE HIGH-PRESSURE RAIL .
• Refer to REMOVING FUEL DELIVERY LINE .
• Refer to REMOVING ALL HIGH PRESSURE LINES BETWEEN RAIL AND INJECTORS .
• Refer to REMOVING RIGHT RAIL .
• Refer to REMOVING RIGHT HIGH-PRESSURE PUMP .
• Refer to REMOVING INJECTORS .
• 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 DRAINING COOLANT .
• Refer to RELEASING COOLANT FEED LINE FOR THE RIGHT EXHAUST TURBOCHARGER .
• Refer to REMOVING RIGHT CYLINDER HEAD COVER .
• Refer to REMOVING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
• Refer to REMOVING BOTH SOLENOID VALVES ON RIGHT SIDE .
• Refer to REMOVING THE TOP TIMING CASE COVER FOR CYLINDERS 1 TO 6 .
• Refer to INSTALLING THE PROTECTIVE SHIELD ON THE RADIATOR .
• Refer to REMOVING THE DRIVE BELT FOR ALTERNATOR 2 AND THE AIR CONDITIONING COMPRESSOR .
• Refer to REMOVING THE DRIVE BELT FOR ALTERNATOR .
• Refer to REMOVING THE BELT PULLEY .
• Refer to PLACE THE 1ST AND 7TH CYLINDER INTO THE TDC SETTING .
• Refer to REMOVING THE SPECIAL TOOLS TO DISCONNECTING THE CRANKSHAFT .
• Refer to RELEASING THE CHAIN TENSIONER .
• Refer to REMOVING THE HYDRAULIC CHAIN TENSIONER .
• Refer to INSTALLING SPECIAL TOOL TO PRE-TENSIONING TIMING CHAIN .
• Refer to CHECKING TIMING .
• Refer to INSTALLING SPECIAL TOOL FOR FASTENING CAMSHAFTS .
• Refer to SCREW IN SPECIAL TOOLS 11 9 895 1 TO 6 AND 7 TO 12 .
• Refer to FASTENING THE CAMSHAFTS WITH THE SPECIAL TOOL .
• Refer to REMOVING THE UPPER SLIDE RAIL .
• Refer to LOOSENING BOTH CENTRAL BOLTS OF VANOS GEAR .
• Refer to REMOVING SPECIAL TOOL TO PRETENSION TIMING CHAIN .
• Refer to REMOVING THE EXHAUST CAMSHAFT ADJUSTER FOR CYLINDER 1 TO 6 .
• Refer to REMOVING THE SPECIAL TOOLS TO FIX THE CAMSHAFTS .

Exhaust camshaft, right 

Fig 1: Exhaust Camshaft Screws Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

1-14 Screws (graphic N74) 

• Release all screws step-by-step in the right sequence (1)  to (14)  in a semi circle pattern.
  Fig 2: Exhaust Camshaft Screws Loosening Sequence

  Courtesy of BMW OF NORTH AMERICA, INC.
• Remove the thrust bearing (1)  and all the exhaust camshaft bearing caps (2)  and place neatly in a special tool 0 495 105 (11 4 480) .
• Remove the exhaust camshaft and place in the special tool 0 495 105 (11 4 480) .

  Courtesy of BMW OF NORTH AMERICA, INC.