64 52 523 Replacing air conditioning system compressor (N55) (Version 2)

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Special tools required:

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

Handling R 134a refrigerant . See 64 50... NOTE FOR HANDLING R134A 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 compressor replacement. . See 64 52... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 64 52... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN)

FOLLOW NOTES FOR OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .

If Air conditioning is opened for more than 24 h:

REPLACE desiccant insert for heating and air conditioning system.

Necessary preliminary tasks:

DRAWING OFF, EVACUATING AND FILLING THE AIR CONDITIONING are not included in the time value given for this job item
REMOVE COMPRESSOR DRIVE BELT

Removal:

Release screw (1).

Undo latch mechanisms (2) on intake silencer housing.

Feed out intake port (3).

Fig 1: Identifying Intake Port, Latch Mechanisms On Intake Silencer Housing And Screw

G09950060

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.

Release screws (1) and remove refrigerant lines (2).

Fig 2: Identifying Refrigerant Lines With Screws

G09950061

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Fig 3: Identifying Air Conditioning System Compressor Screw (N55)

G09929529

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 (3) against falling off/down!

Disconnect the connector (1).

Release screw (2).

Lift out compressor (3).

Fig 4: Identifying Compressor, Screw And Connector

G09950063

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Adjust the amount of refrigerant oil in the new compressor . See 64 52... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 64 52... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN)

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 safety information must be observed . See 64 52... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 64 52... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN) !

Installation:

Position compressor (3) correctly.

Tighten down screw (2).

Tightening torque 64 52 3AZ .

Connect the connector (1).

Fig 5: Identifying Compressor, Screw And Connector

G09950063

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down screw (1).

Tightening torque 64 52 3AZ .

Fig 6: Identifying Air Conditioning System Compressor Screw (N55)

G09929529

Courtesy of BMW OF NORTH AMERICA, INC.

Position refrigerant lines (2) correctly.

Tighten down the screws (1).

Tightening torque 64 52 1AZ .

NOTE: Renew sealing rings.

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

Fig 7: Identifying Refrigerant Lines With Screws

G09950061

Courtesy of BMW OF NORTH AMERICA, INC.

Feed in intake port (3) correctly.

Engage latch mechanisms (2) on intake silencer housing.

Tighten down screw (1).

NOTE: Make sure intake port (3) is fitted correctly!

Fig 8: Identifying Intake Port, Latch Mechanisms On Intake Silencer Housing And Screw

G09950060

Courtesy of BMW OF NORTH AMERICA, INC.

Required reworking: