64 52 523 Replacing air conditioning compressor (N20)
Special tools required:
Risk of damage. Restart engine only when A/C system has been correctly filled.
Read and comply with notes on OPENING AND PART REPLACEMENT IN REFRIGERANT CIRCUIT
If air conditioning system is opened for more than 24 hours: Replace CONDENSER (includes dessicant insert).
Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.
Necessary preliminary work:
- DRAW OFF heating and air conditioning system
- Remove DRIVE BELT FOR ALTERNATOR
- Remove left CHARGE AIR DUCT
Open the holder (1) with suitable tools.
Clip refrigerant line (2) out of holder (1).
Installation note:
Check that the refrigerant line (2) is correctly seated in the holder (1)!
Release screws (1) and remove refrigerant lines (2).
Tightening torque 64 52 1AZ .
Unfasten plug connection (3) and disconnect.
Installation note:
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.
Release screws (1).
Tightening torque 64 52 4AZ .
Feed out compressor (2) upwards to the front.
Replacement:
Danger of compressor damage!
Danger of customer complaints due to 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:
After installation: