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Home >> BMW >> 2014 >> M6 2D Convertible, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 807 (Heating And Air Conditioning - Repair) >> Compressor >> 64 52 523 Removing and installing/replacing A/C system compressor (N63)

64 52 523 Removing and installing/replacing A/C system compressor (N63)

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Special tools required: 

WARNING: Danger of injury!
Refrigerant circuit is under high pressure!
Follow SAFETY INFORMATION  for handling refrigerant and refrigerant oil.
IMPORTANT: Risk of damage! 
Restart engine only when A/C system has been correctly filled.

Read and comply with notes on compressor replacement.  See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR KNOWN) .

Observe the INSTRUCTIONS FOR OPENING AND THE PART EXCHANGE IN THE REFRIGERANT CIRCUIT .

If Air conditioning is opened for more than 24 h:

Replace DESICCANT INSERT  for air conditioning.

Necessary preliminary work: 

Unfasten screws (2).

Tightening torque 64 53 3AZ .

Remove lines (3) from capacitor (1).

Fig 1: Identifying Capacitor, Lines And Screws
G06886345Courtesy of BMW OF NORTH AMERICA, INC.

Cover cooling fins with aluminum sheet (2) or similar material.

NOTE: This prevents the cooling fins from being damaged when the compressor is removed later.
ARS expandable hose (1) is only tied up in the case of the equipment specification with Dynamic Drive.
Fig 2: Identifying ARS Expandable Hose
G06886346Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove both retaining brackets of anti-roll bar (2).

Carefully lower anti-roll bar.

Tightening torque 31 35 1AZ .

Fig 3: Identifying Retaining Brackets Of Anti-Roll Bar And Screws
G06889610Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 64 52 03AZ .

Fig 4: Identifying Screws
G06886348Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.
NOTE: Secure compressor (5) against falling out.
Release screw (1).

Tightening torque 64 52 03AZ .

Disconnect plug connection (2).

Lower compressor (5).

Release screws (3) and (4) and remove refrigerant lines.

Tightening torque 64 52 01AZ .

Installation note: 

Replace sealing rings.

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

Fig 5: Identifying Plug Connection, Compressor And Screws
G06886349Courtesy of BMW OF NORTH AMERICA, INC.

Have another person pull the radiator forward.

Carefully feed out compressor upwards.

Replacement: 

IMPORTANT: Danger of compressor damage!
Danger of customer complaints due to reduced cooling power of the Air conditioning!
Before the installation of the new compressor, it is absolutely necessary to adjust the amount of refrigerant oil in the new compressor!
The notes on refrigerant oil must be observed! See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR KNOWN) .

After installation: