64 52 523 Replacing A/C system compressor (N20, N26)
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Special tools required:
WARNING:
Danger of injury!
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant fluid.
Read and comply with safety instructions:
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant fluid.
Read and comply with safety instructions:
- Handling R 134a refrigerant . See 6450... NOTE FOR HANDLING R134A REFRIGERANT or 6450... SAFETY INFORMATIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A
- HANDLING REFRIGERANT FLUID
IMPORTANT:
Risk of damage!
Restart engine only when A/C system has been correctly filled.
Read and comply with notes on compressor replacement . See 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN) .
FOLLOW NOTES FOR OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .
If Air conditioning is opened for more than 24 h:
REPLACE CONDENSER FOR AIR CONDITIONING .
Restart engine only when A/C system has been correctly filled.
Read and comply with notes on compressor replacement . See 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN) .
FOLLOW NOTES FOR OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .
If Air conditioning is opened for more than 24 h:
REPLACE CONDENSER FOR AIR CONDITIONING .
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 DRIVE BELT FOR ALTERNATOR
- Remove left CHARGE AIR DUCT
IMPORTANT:
Seal openings or lines on compressor with special tool 32 1 270
to prevent escape of media and dirt contamination.
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.
NOTE:
Secure compressor (2) against falling out.
Release screws (1).
Tightening torque 64 52 3AZ .
Feed out compressor (1) upwards to the front.
Replacement:
- Adjust amount of refrigerant oil in the new compressor . See 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN)
IMPORTANT:
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!
Be sure to read and comply with safety information . See 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN) .
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!
Be sure to read and comply with safety information . See 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR NOT KNOWN) or 6452... NOTES FOR CHANGING THE AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL OF NEW AIR CONDITIONING COMPRESSOR KNOWN) .
After installation: