11 12 000 Removing and installing/sealing cylinder head cover (N57 Diesel)

IMPORTANT: When working on the oil, coolant or fuel circuit, you must protect the alternator against contamination.

Cover alternator with suitable materials.

Necessary preliminary work:

Remove intake PLENUM .
Remove all INJECTORS .
Remove PRESSURE ACCUMULATOR .
Release engine wiring harness in area of cylinder head cover.

Release screws (1).

Lay cable clip (2) to one side.

Fig 1: Identifying Cable Clip And Screws

G09919465

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Turn oil filler neck (2) in direction of arrow to stop.

Lift out oil filler neck (2).

Fig 2: Turning Oil Filler Neck

G09919466

Courtesy of BMW OF NORTH AMERICA, INC.

Press locking hooks (1) down.

Remove hose (2) for engine ventilation.

Fig 3: Identifying Engine Ventilation Hose And Locking Hooks

G09919467

Courtesy of BMW OF NORTH AMERICA, INC.

Undo cylinder head cover bolts in the sequence 23 to 1.

Fig 4: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N57)

G09919468

Courtesy of BMW OF NORTH AMERICA, INC.

Replace profile seals (1 and 2).

Fig 5: Identifying Profile Seals

G09919469

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 6: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N57)

G09919470

Courtesy of BMW OF NORTH AMERICA, INC.

Install cylinder head cover with new profile seal.

Secure cylinder head cover bolts in the sequence 1 to 23.

Tightening torque: 11 12 4AZ .

Assemble engine.

Check engine for leak tightness.