64 52 523 Replacing air conditioning system compressor (N55)

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:

Handling R 134a refrigerant . See 64 50... INSTRUCTIONS FOR HANDLING R 134A REFRIGERANT or 64 50... SAFETY INFORMATIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A .
HANDLING REFRIGERANT FLUID .

IMPORTANT: Risk of damage!
Restart engine only when A/C system has been correctly filled.
Read and comply with NOTES ON REPLACING COMPRESSOR .
Follow NOTES for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours:
REPLACE desiccant insert for heating and air conditioning 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 drive belt for alternator . See 11 28 010 REPLACING ALTERNATOR DRIVE BELT (N55)
Remove LEFT CHARGE AIR DUCT .

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

Unfasten plug connection (1) and disconnect.

Release screws (2) and remove refrigerant lines (3).

Tightening torque 64 52 1AZ .

Installation note:

Replace sealing rings.

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

Fig 1: Identifying Plug Connection, Refrigerant Lines And Screws

G08422918

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) at holder for refrigerant lines (2) and pull out, including spacer sleeve.

Fig 2: Identifying Refrigerant Lines And Screws

G08422919

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 64 52 3AZ .

Fig 3: Identifying Air Conditioning System Compressor Mounting Screws

G08422920

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Shown with clearance for better clarity.

Release screw (1).

Tightening torque 64 52 3AZ .

Fig 4: Identifying Air Conditioning System Compressor Mounting Screws

G08422921

Courtesy 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 (2) against falling off/down.

Release screw (1).

Tightening torque 64 52 3AZ .

Lift out compressor (2).

Fig 5: Identifying Compressor And Screw

G08422922

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

EVACUATE AND FILL AIR CONDITIONING SYSTEM .