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Home >> BMW >> 2014 >> M6 2D Convertible, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1127 (Engine - Repair (2 Of 3)) >> Variable Valve Timing Control System (VANOS) >> 11 36 048 Removing and Installing/Replacing Inlet and Exhaust Adjustment Units On Right Side (N63)

11 36 048 Removing and Installing/Replacing Inlet and Exhaust Adjustment Units On Right Side (N63)

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Special Tools Required: 

IMPORTANT: When The Engine Is Shut Down, The Inlet and Exhaust Camshaft Adjuster Is Normally Locked In Its Initial Position.
The Situation May Arise In Some Individual Cases Where This Initial Position Is Not Reached and The Camshaft Can Continue To Be Rotated In The Adjustment Range of The Camshaft Adjuster.
Where Central Bolts Are Not Greased At The Bolt Contact Points Up To Engine Number 20024295  , The Adjustment Gear Must Be Replaced for Safety Reasons.
The Central Bolts Is Greased From Engine Number 20024296  .

(Cylinder Bank 1 To 4) 

Necessary Preliminary Tasks: 

To Release Central Bolts, Use Special Tool 11 9 890 or Grip At Hexagon Head of Camshaft.

Fig 1: Positioning Special Tool 11 9 892 On Special Tool 11 9 893 and Securing with Special Tool 11 9 891
G09874666Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: If Special Tool 11 9 890 Can Not Be Fitted, It Is Necessary When Releasing The Central Bolt To Grip The Hexagon Head of The Respective Camshafts.

Release Central Bolts (1 and 2) of Intake and Exhaust Camshaft Adjusters.

Installation Note: 

Replace Central Bolts After Releasing.

Fig 2: Identifying Central Bolts of Intake and Exhaust Camshaft Adjusters
G09874667Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Check Whether Head of Central Bolt (1) Is Greased (See Arrow In Illustration).
If No Grease Can Be Seen On The Bolt Head of Central Bolt (1), The Inlet and Exhaust Adjustment Unit Must Be Replaced for Safety Reasons.

Installation Note: 

Coat Contact Face of Central Bolt (1) with Copper Paste.

Fig 3: Checking Central Bolt Head To See If Required Grease Is Present
G09874668Courtesy of BMW OF NORTH AMERICA, INC.

Release Hexagon Socket Screw.

Release Special Tool 11 9 900 At Knurled Screws and Remove.

Fig 4: Mounting Special Tool 11 9 900 At Position of Chain Tensioner and Pre-Loading Hex Socket Screw To 0.6 Nm Using Special Tool 00 9 250
G09874669Courtesy of BMW OF NORTH AMERICA, INC.

Release Screws (1).

Remove Upper Tensioning Rail (2).

Fig 5: Identifying Sliding Rail and Screws
G09874670Courtesy of BMW OF NORTH AMERICA, INC.

Remove Central Bolt (1) of Exhaust Adjustment Unit.

Installation Note: 

Replace Central Bolts After Releasing.

Fig 6: Identifying Central Bolt of Exhaust Camshaft Adjustment Unit
G09874671Courtesy of BMW OF NORTH AMERICA, INC.

Detach Exhaust Adjustment Unit (1) In Direction of Arrow From Exhaust Camshaft.

Fig 7: Detaching Exhaust Camshaft Adjustment Unit
G09874672Courtesy of BMW OF NORTH AMERICA, INC.

Feed Out Exhaust Adjustment Unit (2) From Timing Chain (1).

Lift Out Exhaust Adjustment Unit (2).

Fig 8: Identifying Exhaust Camshaft Adjustment Unit and Timing Chain
G09874673Courtesy of BMW OF NORTH AMERICA, INC.

Remove Central Bolt (1) of Inlet Adjustment Unit.

Installation Note: 

Replace Central Bolts After Releasing.

Fig 9: Identifying Central Bolt of Intake Camshaft Adjustment Unit
G09874674Courtesy of BMW OF NORTH AMERICA, INC.

Detach Inlet Adjustment Unit (1) In Direction of Arrow From Inlet Camshaft.

Fig 10: Detaching Intake Camshaft Adjustment Unit
G09874675Courtesy of BMW OF NORTH AMERICA, INC.

Feed Out Inlet Adjustment Unit (2) From Timing Chain (1).

Lift Out Inlet Adjustment Unit (2).

Fig 11: Identifying Exhaust Camshaft Adjustment Unit and Timing Chain
G09874676Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Danger of Mix-Up:
Intake and Exhaust Camshaft Adjusters Are Different.
Mixing Up The Inlet and Exhaust Adjustment Units Will Cause Damage To The Engine.
  1. Intake Camshaft Adjuster (1) Is Marked "EIN" 
  2. Exhaust Camshaft Adjuster (2) Is Marked "AUS" 
    Fig 12: Identifying Markings On Intake and Exhaust Camshaft Adjusters
    G09874677Courtesy of BMW OF NORTH AMERICA, INC.

Installation Note: 

Coat Contact Face of Central Bolt (1) with Copper Paste.

Fig 13: Checking Central Bolt Head To See If Required Grease Is Present
G09874678Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Position of Adjustment Units In Relation To Timing Chain Can Be Freely Selected.

Feed Adjuster Into Timing Chain and Position On Camshafts.

Insert Central Bolts (1 and 2) On Adjustment Units Without Gaps.

Release Central Bolts (1 and 2) By 90°  .

Fig 14: Installing Pre-Tension Belt Tensioner
G09874679Courtesy of BMW OF NORTH AMERICA, INC.

Fit Sliding Rail (2) and Secure with Screws (1).

Tightening torque: 11 31 4AZ .

Fig 15: Identifying Sliding Rail and Screws
G09874680Courtesy of BMW OF NORTH AMERICA, INC.

Get Set of Special Tools 11 9 890 Ready for Securing Camshafts.

Fig 16: Identifying Set of Special Tools 11 9 890
G09874681Courtesy of BMW OF NORTH AMERICA, INC.

Place Special Tool 11 9 893 On Exhaust Camshaft.

Fig 17: Placing Special Tool 11 9 893 On Exhaust Camshaft and Checking Timing Adjustment
G09874682Courtesy of BMW OF NORTH AMERICA, INC.

Fit Special Tool 11 9 893 On Intake Camshaft.

Installation Note: 

Align Exhaust and Intake Camshafts So That Special Tools 11 9 893 Lie On The Cylinder Head Without Any Gap.

Fig 18: Fitting Special Tool 11 9 893 On Intake Camshaft and Checking Timing Adjustment
G09874683Courtesy of BMW OF NORTH AMERICA, INC.

Screw Special Tool 11 9 894 Into Cylinder Head.

Fig 19: Screwing Special Tool 11 9 894 Into Cylinder Head
G09874684Courtesy of BMW OF NORTH AMERICA, INC.

Press Special Tool 11 9 892 Down with Special Tool 11 9 891 .

Fig 20: Positioning Special Tool 11 9 892 On Special Tool 11 9 893 and Securing with Special Tool 11 9 891
G09874685Courtesy of BMW OF NORTH AMERICA, INC.

Screw In Special Tool 11 9 900 .

Pretension Timing Chain with Special Tool 11 9 900 .

Preload Hexagon Socket Screw with Special Tool 00 9 250 To 0.6 Nm  .

Fig 21: Mounting Special Tool 11 9 900 At Position of Chain Tensioner and Pre-Loading Hex Socket Screw To 0.6 Nm Using Special Tool 00 9 250
G09874686Courtesy of BMW OF NORTH AMERICA, INC.

Check Special Tools 11 9 190 for Correct Seating.

Fig 22: Securing Vibration Damper Using Special Tool 11 9 190
G09874687Courtesy of BMW OF NORTH AMERICA, INC.

Tighten Down Central Screw (1 and 2) of The Adjustment Units with Special Tool 00 9 120 .

Tightening torque 11 36 1AZ .

Fig 23: Identifying Central Bolts of Intake and Exhaust Camshaft Adjusters
G09874688Courtesy of BMW OF NORTH AMERICA, INC.

Remove Special Tools 11 9 190 and 11 8 570 .

Crank Engine At Central Bolt Twice In Direction of Rotation Until Engine Is In The 150° Firing TDC Position Cylinder 1  Again.

Mount Special Tool 11 8 570 On Vibration Damper with A Bolt.

Secure Special Tool 11 9 190 At 150° Before Cylinder No. 1 Firing TDC Position  .

Fig 24: Securing Vibration Damper Using Special Tool 11 9 190
G09874689Courtesy of BMW OF NORTH AMERICA, INC.

Check TIMING  Again.

Remove All Special Tools.

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