64 52 523 Replacing air conditioning compressor (N57)
Special tools required:
Follow notes for OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .
Risk of damage:
Restart engine only when air conditioning has been correctly filled.
Read and comply with notes on compressor replacement: see NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL NOT KNOWN) or NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL KNOWN) .
If air conditioning system is opened for more than 24 hours: Replace DESICCANT INSERT for A/C system
Necessary preliminary tasks:
- DRAIN OFF air conditioning system
- Remove DRIVE BELT FOR ALTERNATOR
Release screws (1).
Tightening torque 64 52 1AZ .
Remove pressure and intake pipes (2) and set aside.
Unfasten plug connection (3) and disconnect.
Installation note:
Renew sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.
Release screws (2) on compressor (1).
Tightening torque 64 52 3AZ .
Feed out compressor (1) in direction of arrow.
Replacement:
- Adjust the amount of refrigerant oil in the new compressor: see NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL NOT KNOWN) or NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL KNOWN) .
Danger of compressor damage.
Possibility of reduced cooling power of the Air conditioning.
Before the installation of the new compressor, it is absolutely necessary to adjust the amount of refrigerant oil in the new compressor. See NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL NOT KNOWN) or NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL KNOWN) .
After installation:
- EVACUATE AND FILL air conditioning system