64 52 523 Removing and Installing/Replacing A/C System Compressor

64 52 523 Replacing Air Conditioning Compressor (N54)

Special tools required:

WARNING:
Risk of injury.
Refrigerant circuit is under high pressure.
Avoid contact with refrigerant and refrigerant oil.
Read and comply with safety regulations:
- Handling R 134a refrigerant
- Handling refrigerant oil

IMPORTANT:
Risk of damage.
Restart engine only when air conditioning system has been correctly filled.
Read and comply with notes on replacing compressor.
Follow instructions for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours:
Replace desiccant insert for A/C 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 compressor drive belt
- Remove left charge-air duct

IMPORTANT: Close openings or line to compressor with special tool 32 1 270, to avoid media leak and dirt contamination.

Release screws (1) and remove refrigerant lines.
Tightening torque 64 52 1AZ.

Installation:
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.
Unfasten plug connection (2) and disconnect.

Release screw (1).
Tightening torque 64 52 3AZ.

IMPORTANT: Close openings or line to compressor with special tool 32 1 270, to avoid media leak and dirt contamination.

NOTE: Secure compressor (2) against falling off/down.

Release bolt (1) and lift out compressor (2).
Tightening torque 64 52 3AZ.

Installation:
Fitting sleeves (1) must not be damaged.
Replace damaged fitting sleeves.

After installation:
- Evacuate and fill A/C system