64 52 520 Removing and Installing / Replacing Complete A/C Compressor

64 52 520 Removing and installing/replacing complete A/C compressor (N12)

Special tools required:







WARNING:
Risk of injury
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling R 134a refrigerant.
Follow safety instructions for handling refrigerant oil.

Scalding hazard
Work on the exhaust system may only be carried out when it has cooled down.







IMPORTANT
Risk of damage
Restart engine only when air conditioning system has been correctly filled.
Read and comply with notes on replacing compressor.

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 upper exhaust manifold heat shield
- Remove A/C compressor drive belt







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







IMPORTANT: Secure compressor against falling out.

Disconnect plug connection (1).
Release nuts (2) and disconnect refrigerant lines.

Tightening torque 64 52 2AZ.


Installation:
Replace sealing rings.

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

Release bolts (3) and feed out compressor.
Tightening torque 64 52 1AZ.







Installation:
- If the A/C system has been opened for more than 24 hours, the desiccant insert must be replaced
- Evacuate and fill A/C system