11 31 036 Removing and installing/replacing left 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 1-4.
Arrow must point in direction of travel to chain drive.

Remove bearing cap (2).

Installation:

Lubricate all bearing points with engine oil.

Fig 1: Identifying Camshaft Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque: 11 12 2AZ .

Installation:

Lubricate all bearing points with engine oil.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Insert exhaust camshaft for cylinders 5 to 8.

Designation (A 2) on dihedron points upwards.

Cams (1) on cylinder no. 5 point upwards.

Installation:

Lubricate all bearing points with engine oil.

NOTE: Picture shows S85.

Fig 4: Identifying Exhaust Camshaft Designation

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. E 5= inlet side on cylinder no. 5.

Arrow 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 .

Installation:

Lubricate all bearing points with engine oil.

Fig 6: Identifying Camshaft Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.