Removing and installing/replacing expansion valve (S55 engine)

Special tools required: 

• 00 9 030

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant fluid.

Read and comply with safety instructions:

• HANDLING R134A TETRAFLUORETHANE REFRIGERANT 
• HANDLING REFRIGERANT FLUID .

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

Follow NOTES FOR OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .

• Replace CONDENSER ASSY .

Necessary preliminary tasks: 

• Drain off AIR CONDITIONING SYSTEM .

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 64 53 1AZ .

Disconnect refrigerant lines (2) and lay to one side.

Installation note: 

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 64 53 2AZ .

Remove expansion valve (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

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

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

After installation: 

• Evacuate and fill AIR CONDITIONING SYSTEM .