64 51 522 Removing and installing or replacing expansion valve

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2006 BMW 330Ci, 2005 BMW 330xi, 2005 BMW 330i, 2005 BMW 330Ci, and 2004 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Draw off A/C system.
Remove heater bulkhead. See 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD

Unfasten nut.

Fig 1: Removing Heater Bulkhead

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tightening torque. Refer to TIGHTENING TORQUES .

Unfasten screws.

Detach refrigerant lines in direction of arrow.

Installation:

Replace sealing rings.
Tightening torque. Refer to TIGHTENING TORQUES .

Fig 2: Removing Refrigerant Lines In Direction Of Arrow
Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, pull lock (1) in direction of arrow and feed out flap (2).

Fig 3: Pulling Lock In Direction Of Arrow

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Unscrew nut (1).

Installation:

Replace sealing rings.
Tightening torque. Refer to TIGHTENING TORQUES .

Detach double pipe (2) in direction of arrow and lay to one side.

Fig 4: Removing Double Pipe In Direction Of Arrow

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws.

Installation:

Replace sealing rings.
Tightening torque. Refer to TIGHTENING TORQUES .

Pull out expansion valve in direction of arrow.

Fig 5: Removing Expansion Valve In Direction Of Arrow

Courtesy of BMW OF NORTH AMERICA, INC.