11 74 509 Replacing both pressure converters for turbocharger (N63O1)

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

Necessary preliminary work:

Pressure converter, cylinders 1-4:

Disconnect plug connection (1) on pressure converter.

Pressure converter, cylinders 5-8:

Disconnect plug connection (2) on pressure converter.

Fig 1: Identifying Pressure Converter Plug Connections

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Pressure converter, cylinders 1-4:

Disconnect vacuum hose at connection (VAC = vacuum reservoir).

Disconnect vacuum hose at connection (OUT= turbocharger vacuum unit).

Unscrew nuts (1).

Tightening torque 11 65 9AZ .

Remove pressure converter (EDPDW).

Fig 2: Identifying Vacuum Hose Connections

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Installation note:

Cylinder 1-4 is equipped with a fabric hose (OUT).

Pressure converter, cylinders 5-8:

Disconnect vacuum hose at connection (VAC = vacuum reservoir).

Disconnect vacuum hose at connection (OUT= turbocharger vacuum unit).

Unscrew nuts (1).

Tightening torque 11 65 9AZ .

Remove pressure converter (EDPDW).

Installation note:

Cylinder 5-8 is equipped with a molded hose (OUT).

Fig 3: Identifying Vacuum Hoses And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

All plug connections must audibly snap into place.

Check activation via diagnosis system.