18 40 010 Remove/install/replace exhaust manifold at left (S63)

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

Special tools required:

2 249 161

WARNING: Risk of burning!
Only perform this repair work on an engine that has cooled down.

Necessary preliminary tasks:

Release screws (1).

Tightening torque 11 65 6AZ .

Graphic N63.

Fig 1: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 11 65 6AZ .

Remove heat shield (2).

Fig 2: Identifying Heat Shield And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 11 65 5AZ .

Remove heat shield (2) on left and right.

Illustration: N63

Fig 3: Identifying Heat Shield Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws with spacer sleeves (1 to 8).

Remove exhaust manifold, bank 2.

Installation note:

Replace gasket.

Fig 4: Left Exhaust Manifold Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws with spacer sleeves (1 to 8).

Remove exhaust manifold, bank 1.

Installation note:

Replace gasket.

Fig 5: Right Exhaust Manifold Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace gasket (1) for banks 1 and 2.

Seal beads faces the exhaust manifold.

Fig 6: Identifying Gasket For Banks 1 And 2

Courtesy of BMW OF NORTH AMERICA, INC.

Position universal bank exhaust manifold, bank 1.

Screw in special tool 2 249 161 into position (3 and 4).

Tightening torque: 11 62 1AZ .

Join screws with spacer sleeves (1 to 2) to 10 Nm.

Remove special tool 2 249 161 and insert screws with spacer sleeves into position (3 and 4) and join to 10 Nm.

Fig 7: Right Exhaust Manifold Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Insert screws with spacer sleeves at position (5 to 8).

Secure all screws with spacer sleeves (1 to 8).

Tightening torque: 11 62 2AZ .

Position universal bank exhaust manifold, bank 2.

Screw in special tool 2 249 161 at position (3 and 4).

Tightening torque: 11 62 1AZ .

Join screws with spacer sleeves (1 to 2) to 10 Nm.

Remove special tool 2 249 161 and insert screws with spacer sleeves into position (3 and 4) and join to 10 Nm.

Insert screws with spacer sleeves at position (5 to 8).

Fig 8: Left Exhaust Manifold Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Secure all screws with spacer sleeves (1 to 8).

Tightening torque: 11 62 2AZ .

Replace gaskets (1).

Fig 9: Identifying Gaskets

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.