11 74 509 Replacing both pressure converters for turbocharger (S63)

WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Partially release AUXILIARY COOLANT PUMP for turbocharger.
Disconnect plug connection on COOLANT THERMOSTAT .

Pressure converter, cylinders 1-4

Disconnect plug connection (1) on pressure converter.

Installation note:

plug connection (1) must snap audibly into place!

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

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

Unscrew nuts (2).

Tightening torque 11 65 8AZ .

Remove pressure converter.

Fig 1: Identifying Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Pressure converter, cylinders 5-8