64 51 520 Removing and installing or replacing expansion valve

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 335xi, 2012 BMW 328xi, and 2012 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Avoid contact with refrigerant and refrigerant oil.

Follow safety instructions for handling refrigerant R 134a.

Follow safety instructions for handling refrigerant oil.

IMPORTANT: Risk of damage!

Restart engine only when A/C system has been correctly filled.

Follow instructions for opening and replacing parts in refrigerant circuit!

NOTE: If A/C system is opened for more than 24 hours: Replace desiccant insert for A/C system

Necessary preliminary tasks:

Drawing off, evacuating and filling the A/C system are not included in the time value given for this work operation
Remove lower section of microfilter housing

Release screws (1, 2), disconnect refrigerant lines and lay to one side.

Installation:

Replace all sealing rings and moisten with refrigerant oil.

For tightening torque refer to 64 53 2AZ in 64 53 REFRIGERANT LINES AND EXPANSION VALVE .

Fig 1: Refrigerant Lines Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and remove expansion valve (2).

For tightening torque refer to 64 53 13AZ in 64 53 REFRIGERANT LINES AND EXPANSION VALVE .

Fig 2: Expansion Valve And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Place expansion valve (1) exactly on refrigerant lines (2) and (3).

Fit screws of expansion valve (1) and make sure retainer (4) is correctly positioned.

Fig 3: Expansion Valve, Refrigerant Lines And Retainer

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Evacuate and fill A/C system