64 52 523 Replacing A/C system compressor (S85)
Follow instructions for compressor replacement without fail. See 64 52... Instructions For Compressor Replacement .
Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R 134a refrigerant .
Follow safety instructions for handling refrigerant oil .
Avoid contact with refrigerant and refrigerant oil.
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:
Replacing drier insert for A/C system
Necessary preliminary tasks:
All models:
- Draw off refrigerant from A/C system. See 64 50 009 Drawing Off, Evacuating And Filling A/C System (R 134a) .
- Remove RIGHT INTAKE FILTER HOUSING (S85)
- Remove A/C compressor drive belt. See 11 28 050 REPLACING DRIVE BELT FOR A/C COMPRESSOR (S85) .
- Remove front underbody protection. See 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT UNDERBODY PROTECTION
- Remove stabilizer from front axle carrier. See 31 35 000 REMOVING AND INSTALLING/REPLACING FRONT STABILIZER
- Remove right tension strut from front axle carrier. See 31 12 080 REMOVING AND INSTALLING/REPLACING BOTH TENSION STRUTS
Release screws (1).
Tightening torque 64 52 1AZ .
Disconnect pressure and suction lines.
Installation:
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.
Disconnect plug connection (2).
Release screw (1).
Tightening torque 64 52 3AZ .
Release screws (2, 3).
Tightening torque 64 52 3AZ .
Feed out compressor (1).
After installation: