64 52 521 Replacing A/C Compressor

64 52 521 Removing And Installing/replacing Air Conditioning System Compressor (N62)

Special tools required:







WARNING:
Danger of injury.
Refrigerant circuit is under high pressure.
Follow safety information for handling R 134a tetrafluorethane refrigerant.
Avoid contact with refrigerant and refrigerant fluid.
Follow safety information for handling refrigerant fluid.







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 air conditioning system.







Necessary preliminary work:
- Drawing off, evacuating and filling the A/C system are not included in the time value given for this job item
- Remove A/C compressor drive belt
- Remove front underbody protection
- Remove steering box cover at top right







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 both refrigerant lines.
Tightening torque 64 52 1AZ.

Installation note:
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.

Disconnect plug connection (2).
Release screws (3).
Tightening torque 64 52 3AZ .







Slacken bolt (1).
Tightening torque 64 52 3AZ .
Lower vehicle.

NOTE: Secure compressor (2) against falling out.

Release screw (1) from above and feed out compressor (2) in upward direction.







After installation:
- Evacuate and fill A/C system

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