64 51 525 Removing and installing or replacing expansion valve: Notes

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 030

WARNING: Danger of injury!
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant oil.
Read and comply with safety instructions:

IMPORTANT: Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow NOTES for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours: Replacing DESICCANT INSERT for air conditioning system

Necessary preliminary tasks:

DRAWING OFF, EVACUATING AND FILLING THE HEATING AND AIR CONDITIONING SYSTEM are not included in the time value given for this job item
Remove SOUND INSULATION FROM BULKHEAD UPPER SECTION

Feed out line feed-through (1) towards top.

Fig 1: Identifying Line Feed-Through

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Release screws (1) and remove refrigerant lines (2) with associated gasket.

Tightening torque 64 53 1AZ .

Installation note:

Replace sealing rings.

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

Fig 2: Identifying Refrigerant Lines And Screws

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F02/F03 Automatic rear air-conditioning system only:

Release screw (1).

Tightening torque 64 53 7AZ .

Remove refrigerant line (2) with associated gasket.

Installation note:

Replace sealing rings.

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

Fig 3: Identifying Refrigerant Line And Screw

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Unscrew nuts (1).

Tightening torque 64 53 9AZ .

Remove sealing plate (2) by maneuvering upwards.

Fig 4: Identifying Sealing Plate And Nuts

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Feed out foam material (1).

Unfasten screws (2).

Tightening torque 64 53 2AZ .

Carefully remove flange (3) with expansion valve behind.

Installation note:

Replace sealing rings.

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

Flange (3) must be correctly seated on expansion valve.

Fig 5: Identifying Foam Applying Area On Expansion Valve

Courtesy of BMW OF NORTH AMERICA, INC.