64 52 521 Replacing A/C Compressor

64 52 521 Removing And Installing/replacing A/C System Compressor (M57T2)

Special tools required:







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







IMPORTANT:
Risk of damage.
Restart engine only when A/C 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 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 A/C compressor drive belt
- Remove clean air pipe
- Remove right pressure pipe
- Remove steering gear cover at bottom right







Release screw (1).
Tightening torque 64 52 3AZ.







Release screw (1).
Tightening torque 64 52 3AZ.







IMPORTANT: Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and fouling.







NOTE: Secure compressor (5) against falling out.

First release screw (1) and remove refrigerant line.
Release screw (2) and remove refrigerant line.
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 (3).
Release screw (4) and feed out compressor (5) towards top.
Tightening torque 64 52 3AZ.







After Installation note:
- Evacuate and fill A/C system

�;: