11 31 038 Removing and installing/replacing right exhaust camshaft (S65)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks:

Release screws (1).

Tightening torque: 11 12 2AZ .

E Intake camshaft

A Exhaust camshaft.

IMPORTANT: Risk of mix-up with cylinder bank 5-8.
Arrow must point in direction of travel to chain drive.

Remove bearing caps.

Installation:

Lubricate all bearing points with engine oil.

Fig 1: Identifying Camshaft Screws

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Release screws (1) from outside inwards in 1/2 turns.

Tightening torque: 11 12 2AZ .

Remove exhaust camshaft for cylinders 1 to 4.

Fig 2: Identifying Camshaft Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Check plain compression rings for damage and replace if necessary.

The plain compression rings have catches at the joint.

Press plain compression rings apart upwards and downwards and remove towards front.

IMPORTANT: Plain compression rings can break easily.

Fig 3: Removing Plain Compression Rings

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Insert exhaust camshaft for cylinders 1 to 4.

Designation (A1) on dihedron points upwards.

Cams on cylinder no. 4 point upwards.

Installation:

Lubricate all bearing points with engine oil.

Fig 4: Positioning Exhaust Camshaft Lobs

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

All bearing shells are assigned to one cylinder.

E and A from (1 to 8), e.g. A 1= exhaust side on 1st cylinder.

Arrow (1) must point in direction of travel to chain drive.

Fig 5: Positioning Travel Direction To Chain Drive

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) from inside outwards in 1/2 turns.

Tightening torque: 11 12 2AZ .

Fig 6: Identifying Camshaft Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust valve timing.

Assemble engine.