BMW X3 Service & Repair Manual: Replacing air conditioning system compressor (N55) (version 2)

BMW X3 Service & Repair Manual / HVAC / Compressor / Replacing air conditioning system compressor (N55) (version 2)

Special tools required:

  • 00 9 030
  • 32 1 270

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 .
  • 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.

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).

HVAC

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).

HVAC

Release screw (1).

HVAC

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).

HVAC

Replacement:

  • Adjust the amount of refrigerant oil in the new compressor .

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 .

Installation:

Position compressor (3) correctly.

Tighten down screw (2).

Connect the connector (1).

HVAC

Tighten down screw (1).

HVAC

Position refrigerant lines (2) correctly.

Tighten down the screws (1).

NOTE: Renew sealing rings.

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

HVAC

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!

HVAC

Required reworking:

  • Install DRIVE BELT FOR COMPRESSOR
  • EVACUATE AND FILL AIR CONDITIONING SYSTEM
    Replacing air conditioning system compressor (N55) (version 1)
    Special tools required: 00 9 030 32 1 270 WARNING: Danger of injury! Refrigerant circuit is under high pressure! Avoid contact with refrige ...

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