6451520 Removing and installing or replacing expansion valve

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for HANDLING R 134A REFRIGERANT See 6450... SAFETY INSTRUCTIONS FOR HANDLING R134A REFRIGERANT or 6450... INSTRUCTIONS FOR HANDLING REFRIGERANT R 134A .
Avoid contact with refrigerant and refrigerant oil.
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.

Tightening torque 64 53 2AZ .

Installation:

Replace sealing rings.

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

Fig 1: Identifying Refrigerant Lines Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque 64 53 13AZ .

Fig 2: Identifying 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: Identifying Expansion Valve, Retainer And Refrigerant Lines

Courtesy of BMW OF NORTH AMERICA, INC.

After installation

EVACUATE AND FILL A/C SYSTEM