64 52 521 Replacing A/C Compressor

64 52 521 Replacing Air Conditioning Compressor (N54)

Special tools required:

WARNING:
Risk of injury.
Refrigerant circuit is under high pressure.
Follow safety instructions for handling refrigerant.
Follow safety instructions for handling refrigerant oil.
Avoid contact with refrigerant and refrigerant oil.

IMPORTANT:
Risk of damage.
Restart engine only when A/C system has been correctly filled.
Read and comply with notes on replacing compressor.
Follow instructions for opening and replacing parts in refrigerant circuit.

If A/C 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 air conditioning compressor drive belt
- Remove suction filter housing.
- Remove left charge-air duct

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 2AZ.

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 2AZ

Installation:
Adapter sleeves (1) must not be damaged.
Replace damaged adapter sleeves.

After installation:
- Evacuate and fill A/C system