64 52 524 Removing and installing/replacing heating and air conditioning system compressor (N63, X Drive, Dynamic Drive): 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:

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.
Read and comply with NOTES ON REPLACING COMPRESSOR .
Follow instructions for OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .
If air conditioning system is opened for more than 24 hours:
Replace desiccant insert. See REPLACING DESICCANT INSERT FOR AIR CONDITIONING SYSTEM or REPLACING DESICCANT INSERT FOR A/C SYSTEM (CAPACITOR REMOVED) .

Necessary preliminary tasks:

DRAIN OFF AIR CONDITIONING SYSTEM
Remove air conditioning compressor DRIVE BELT
Lower FRONT AXLE SUPPORT

Release screw (1).

Unfasten screws (2).

Tightening torque 37 11 2AZ .

Carefully lower active stabilizer (3).

Fig 1: Identifying Lower Active Stabilizer And Screws

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Protect cooling fins (1) as shown with suitable material (2) (e.g. aluminium sheet) for the following work operations.

Fig 2: Protecting Cooling Fins Using Suitable Material

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Release screw (2).

Tightening torque 64 53 7AZ .

Take the refrigerant line (1) off the connecting piece (3).

NOTE: Refrigerant line (1) is fed out together with the air conditioning compressor.

Fig 3: Identifying Refrigerant Line, Connecting Piece And Screw

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Release screw (1).

Tightening torque 64 53 3AZ .

Take the refrigerant line (2) of the condenser.

NOTE: Position refrigerant line (2) in direction of arrow.
This work step makes swivelling the compressor to remove the refrigerant lines easier.

Fig 4: Removing Refrigerant Lines

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Unfasten plug connection (1) and disconnect.

Release screw (3) (see next operation).

Unfasten screws (2).

Tightening torque 64 52 3AZ .

Take off holder (4).

Fig 5: Identifying Plug Connection, Holder And Screws

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IMPORTANT: Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.

Secure compressor (1) against falling out.

Take compressor (1) off the crankcase and turn downwards slightly.

Release screw in the marked area at refrigerant line (2).

Tightening torque 64 52 1AZ .

Remove refrigerant line (2).

Installation note:

Replace sealing rings.

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

Fig 6: Removing Refrigerant Line

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Feed out compressor (1) downwards as pictured.

Installation note:

First refrigerant line (2) then compressor (1) feed

Feed in refrigerant line (2) as shown via line (3) to the top.

Secure refrigerant line (2) on compressor.

Tightening torque 64 52 1AZ .

Secure compressor.

Tightening torque 64 52 3AZ .

Fig 7: Identifying Compressor, Refrigerant Line

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