11 74 509 Replacing both pressure converters for turbocharger (N63)

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Necessary preliminary work:

Partially release charge air cooler EXPANSION TANK .
Partially release AUXILIARY WATER PUMP for exhaust turbocharger (not F04).
Disconnect plug connection at 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).

Fig 1: Identifying Plug Connections

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

Unscrew nuts (2).

Tightening torque 11 65 8AZ .

Remove pressure converter.

Pressure converter, cylinders 5-8