64 52 521 Replacing air conditioning compressor (N20)
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Special tools required:
WARNING:
Danger of injury!
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant oil.
Read and comply with safety instructions:
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant oil.
Read and comply with safety instructions:
- Observe SAFETY INFORMATION for handling refrigerant and refrigerant oil.
IMPORTANT:
Risk of damage!
Restart engine only when A/C system has been correctly filled.
Read and comply with notes on compressor replacement. See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR KNOWN) .
Follow notes for OPENING AND REPLACING PARTS in refrigerant circuit.
If Air conditioning is opened for more than 24 h:
Replace DESICCANT INSERT for air conditioning system.
Restart engine only when A/C system has been correctly filled.
Read and comply with notes on compressor replacement. See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR KNOWN) .
Follow notes for OPENING AND REPLACING PARTS in refrigerant circuit.
If Air conditioning is opened for more than 24 h:
Replace DESICCANT INSERT for air conditioning system.
Necessary preliminary work:
- DRAWING OFF, EVACUATING AND FILLING THE AIR CONDITIONING are not included in the time value given for this job item
- Remove DRIVE BELT FOR ALTERNATOR
- REMOVE front left suspension cross-brace
IMPORTANT:
Seal openings or lines on compressor with special tool 32 1 270
to prevent escape of media and dirt contamination.
Open spacer (4) and remove from refrigerant lines (3).
Release screws (1) and remove refrigerant lines (3).
Tightening torque 64 52 1AZ .
Unfasten plug connection (2) 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 (2) upwards to the front.
Replacement:
- Adjust the amount of refrigerant oil in the new compressor. See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW 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!
The notes on refrigerant oil must be observed! See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW 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!
The notes on refrigerant oil must be observed! See NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR NOT KNOWN) -or- NOTES (AMOUNT OF REFRIGERANT OIL OF NEW COMPRESSOR KNOWN) .
After installation: