Install all roller cam followers

• Observe the classification of roller cam followers.

  The classification in digits from 1 to 5 has been printed on the roller cam follower.

  Classification	Idle speed
  1	Repair case - slow engine speed when idling
  2	Installed as standard/Initial installation
  3	Installed as standard/Initial installation
  4	Installed as standard/Initial installation
  5	Repair case - high engine speed when idling

  Courtesy of BMW OF NORTH AMERICA, INC.

• Install the roller cam follower (1) on the intake side.
• Make sure that the roller cam follower (1) is correctly positioned on the hydraulic valve clearance compensating element (arrows) and the intake valves.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Install the roller cam follower (1) on the exhaust side.

• Make sure that the roller cam follower (1) is positioned correctly on the hydraulic valve clearance compensating elements (arrows) and the exhaust valves.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING EXHAUST CAMSHAFT .
• Refer to INSTALLING INTAKE CAMSHAFT .
• Refer to ADJUSTING THE CAMSHAFTS WITH THE SPECIAL TOOL .
• Refer to INSTALLING THE INTAKE ADJUSTER .
• Refer to INSTALLING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
• Refer to INSTALLING EXHAUST CAMSHAFT ADJUSTER .
• Refer to INSTALLING THE VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to PRE-TENSIONING THE TIMING CHAIN WITH THE SPECIAL TOOL .
• Refer to TIGHTENING THE VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to TIGHTENING THE VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to DISASSEMBLING ALL SPECIAL TOOLS .
• Refer to INSTALLING CHAIN TENSIONER .
• Refer to CHECKING THE TIMINGS OF THE CAMSHAFT .
• Refer to CHECKING THE INTERMEDIATE LEVER CLASSIFICATION .
• Refer to INSTALLING ALL INTERMEDIATE LEVERS .
• Refer to INSTALLING ALL GATES .
• Refer to CHECKING THE POSITION OF THE INTAKE CAMSHAFT .
• Refer to CHECKING THE POSITION OF THE INTAKE CAMSHAFT AT CYLINDER 3 AND 4 .
• Refer to INSTALLING THE TORSION SPRINGS .
• Refer to INSTALLING THE INTAKE PLENUM .
• Refer to INSTALLING THE TANK VENT VALVE .
• Refer to INSTALLING CONTROL UNIT BRACKET (540i 2017-2020) , or INSTALLING THE CONTROL UNIT HOLDER (540i 2021-2022) .
• Refer to INSTALLING THE INTEGRATED POWER SUPPLY MODULE (PDM) (540i 2017-2020) , or INSTALLING THE INTEGRATED POWER SUPPLY MODULE (PDM) (540i 2021-2022) .
• Refer to INSTALLING THE DME CONTROL UNIT (540i 2017-2020) , or INSTALLING THE DME CONTROL UNIT (540i 2021-2022) .
• Refer to INSTALLING CYLINDER HEAD COVER .
• Refer to INSTALLING BOTH ACTUATORS .
• Refer to PREPARING THE INJECTORS FOR INSTALLATION .
• Refer to INSTALLING THE HIGH-PRESSURE RAIL WITH INJECTORS OF THE CYLINDERS 4 TO 6 .
• Refer to INSTALLING RAIL WITH INJECTORS OF CYLINDERS 1 TO 3 .
• Refer to INSTALLING HIGH PRESSURE PUMP .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE PUMP AND THE HIGH-PRESSURE RAIL .
• Refer to INSTALLING ALL SPARK PLUGS .
• Refer to INSTALLING ALL IGNITION COILS .
• Refer to INSTALLING ACOUSTIC COVER AT REAR .
• 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 REAR RIGHT ENGINE COMPARTMENT COVER .
• Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
• 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 THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
• Refer to INSTALLING THE INTAKE FILTER HOUSING (TENSION STRUT REMOVED ON SHOCK TOWER) .
• Refer to INSTALLING BOTH FRONT-END STRUTS .
• Refer to INSTALLING THE COVER ON THE LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
• Refer to FILLING THE LOW-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLING EQUIPMENT .
• Refer to CONNECTING NEGATIVE BATTERY CABLE .
• Refer to VENTING THE LOW-TEMPERATURE COOLING SYSTEM .
• Refer to INSTALLING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
• Refer to INSTALLING THE UNDERBODY PROTECTION OF THE STEERING GEAR OR THE FRONT THRUST FIELD .
• Refer to INSTALLING THE CENTER UNDERBODY PROTECTION .
• Refer to INSTALLING REAR UNDERBODY PROTECTION .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to TAKING HOOD OUT OF THE SERVICE POSITION .