BMW X3 Service & Repair Manual: Removing and installing/replacing expansion valve (N55, N47)

BMW X3 Service & Repair Manual / HVAC / Ac housing/evaporator, switching elements / Removing and installing/replacing expansion valve (N55, N47)

Special tools required:

  • 00 9 030

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 tetrafluorethane refrigerant .
  • HANDLING REFRIGERANT FLUID

IMPORTANT: Risk of damage! Restart engine only when A/C system has been correctly filled.

Follow NOTES for opening and replacing parts in refrigerant circuit.

NOTE: If air conditioning system is opened for more than 24 hours:

  • Replace DESICCANT INSERT FOR AIR CONDITIONING.

Necessary preliminary tasks:

  • DRAIN OFF AIR CONDITIONING SYSTEM
  • Remove intake silencer housing .

Release screws (1).

Detach refrigerant lines (2) from expansion valve (3).

Installation note:

Replace sealing rings.

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

HVAC

Release screws (1).

Remove expansion valve (2) from retaining clip.

HVAC

Installation note:

Place expansion valve (1) exactly on refrigerant lines (2) and (3).

Fit screws of expansion valve (1) and make sure retaining clip (4) is correctly positioned.

HVAC

After installation:

  • EVACUATE AND FILL AIR CONDITIONING SYSTEM
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    Special tools required: 00 9 030 WARNING: Danger of injury! Refrigerant circuit is under high pressure! Avoid contact with refrigerant and re ...

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