11 31 038 Removing and Installing/Replacing Right Exhaust Camshaft (N63O1)

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Special Tools Required:

11 4 480 .

Cylinders 1-4

IMPORTANT: Risk of Damage!
Exhaust Camshaft Must First Be Rotated In Such A Way That Camshaft Is Free From Tension When Bearing Caps Are Released.

Necessary Preliminary Tasks:

Remove Right HIGH-PRESSURE PUMP .
Remove Right CYLINDER HEAD COVER .
Remove Right EXHAUST CAMSHAFT ADJUSTER .

IMPORTANT: No Cam On The Exhaust Camshaft Is Permitted To Press Directly Onto A Roller Cam Follower.
with Cylinder No. 1 At 150° Before TDC Firing Position There Is No Piston In The TDC Position.

Rotate Exhaust Camshaft (2) At Dihedron with A Fork Wrench Into A Suitable Position.

Fig 1: Rotating Exhaust Camshaft Carefully Against Direction of Rotation

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Release Screws In Sequence (10 To 1) In 1/2 Turns.

Fig 2: Right Exhaust Camshaft Bearing Cap Bolts Tightening/Loosening Sequence (N63 O1)

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Set All Bearing Caps Down In Special Tool 11 4 480 In A Neat and Orderly Fashion.

Remove Roller Tappet From Bearing Caps (2 and 3) of High Pressure Pump and Lay Down In Special Tool 11 4 480 .

Fig 3: Identifying Right Exhaust Camshaft

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Graphic Shows Engine N63.

Remove Right Exhaust Camshaft Right and Place In Special Tool 11 4 480 .

Plastic Rings (1) Are Maintenance-Free and Must Not Be Replaced.

Check Plastic Rings for Damage.

Fig 4: Identifying Plastic Rings

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Plastic Plain Rectangular Compression Ring:

Plastic Plain Rectangular Compression Rings Are Already Pre-Installed On A New Camshaft.

Plastic Plain Rectangular Compression Rings (1) Are Maintenance-Free and Must Be Replaced If Damaged.

Insert Plastic Rectangular Compression Ring (1) Into Groove of Exhaust Camshaft (2) (See Arrow In Illustration).

Lightly Oil Plastic Rectangular Compression Ring (1) and Rotate In Direction of Arrow Until Compression Ring (1) Is Positioned On The Exhaust Camshaft.

Fig 5: Inserting Plastic Rectangular Compression Ring Into Exhaust Camshaft Groove and Rotating Into Position

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IMPORTANT: Rocker Arms (1) Can Slip Slightly When Inlet Camshaft Is Fitted.
Make Sure Rocker Arms (1) Are Secured As Illustrated On Hydraulic Valve Clearance Compensating Elements and On Valves.

Align All Rocker Arms (1) Straight.

Fig 6: Identifying Rocker Arm Secured On Valve and Hydraulic Valve Clearance Compensating Element

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Coat All Bearing Positions with Engine Oil.

Insert Exhaust Camshaft (1) with Identification (2) A 14 Towards Top.

Fig 7: Identifying Right Exhaust Camshaft

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Position All Bearing Caps By Number.

Tighten Down Bolts In Sequence (1 To 10) In 1/2 Turns.

Tightening torque 11 31 6AZ .

Tightening torque 11 31 7AZ .

Fig 8: Right Exhaust Camshaft Bearing Cap Bolts Tightening/Loosening Sequence (N63 O1)

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Use An Open-End Spanner (1) At Hexagon Head with To Twist Camshaft (2) Into Position.

Fig 9: Rotating Exhaust Camshaft Carefully Against Direction of Rotation

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Exhaust Cams At Cylinder 4 of Exhaust Camshaft Must Point Inwards Crosswise (See Fig 10).

Fig 10: Identifying Proper Intake and Exhaust Camshaft Positions On Cylinder Number 4

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Install Right INLET AND EXHAUST CAMSHAFT ADJUSTERS .

Adjust VALVE TIMING .

Assemble Engine.