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Home >> BMW >> 2012 >> 740i >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine - Repair (N54, 2011-2012) >> Turbocharger And Control >> 11 65... Removing and installing vacuum unit (wastegate valve) for cylinders 4-6 (N54)

11 65... Removing and installing vacuum unit (wastegate valve) for cylinders 4-6 (N54)

NOTE:

These repair instructions serve only as preliminary work for other repair instructions.

The following information only describes how to remove and install the vacuum unit (wastegate valve).

The setting on the vacuum unit (wastegate valve) must not  be altered.

IMPORTANT: Do not  adjust and do not  release lock nut (1).

Vacuum unit (wastegate valve) is adjusted to factory specifications.

ADJUSTMENT/INSPECTION/TESTING  will be required if lock nut (1) is adjusted or released.

Fig 1: Identifying Lock Nut
G06210534Courtesy of BMW OF NORTH AMERICA, INC.

Detach vacuum hose (1) from vacuum unit (wastegate valve).

IMPORTANT: Locking clip (2) cannot be replaced if it is lost.
Bear this in mind and store the locking clip in a safe place.

Release locking clip (2).

Fig 2: Identifying Vacuum Hose And Locking Clip
G11164652Courtesy of BMW OF NORTH AMERICA, INC.

Disengage linkage of vacuum unit (wastegate valve).

Unscrew nuts (1).

Tightening torque 11 65 9AZ .

Remove vacuum unit (wastegate valve).

Fig 3: Identifying Nuts
G11164653Courtesy of BMW OF NORTH AMERICA, INC.