64 51 525 Removing and installing or replacing expansion valve

WARNING: This page is about a different car, the 2010 BMW 535xi, 2009 BMW 535xi, and 2008 BMW 535xi. 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 .

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.

Read and comply with notes on replacing compressor.

Follow INSTRUCTIONS for opening and replacing parts in refrigerant circuit.

If A/C system is opened for more than 24 hours:

Replacing DRIER 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 FRESH AIR DUCT

Feed out rubber grommet (1).

Installation note:

Make sure rubber grommet (1) is correctly seated.

Slacken nut (2).

Installation note:

Tightening torque, 64 53 7AZ .

Detach refrigerant lines (3) and (4) in direction of arrow.

Installation note:

Replace sealing rings and moisten with refrigerant oil.

Fig 1: Identifying Rubber Grommet, Refrigerant Lines And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Installation note:

Tightening torque, 64 53 9AZ .

Detach expansion valve (2) in direction of arrow.

Installation note:

Replace sealing rings and moisten with refrigerant oil.

Make sure soundproofing (3) is correctly seated.

Fig 2: Detaching Expansion Valve

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

EVACUATE AND FILL A/C SYSTEM