64 52 521 Replacing air conditioning compressor
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Special tools required:
- 00 9 030
- 32 1 270
WARNING:
Risk of injury!
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for HANDLING R 134a REFRIGERANT .
Refrigerant circuit is under high pressure!
Follow safety instructions for HANDLING REFRIGERANT OIL .
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for HANDLING R 134a REFRIGERANT .
Refrigerant circuit is under high pressure!
Follow safety instructions for HANDLING REFRIGERANT OIL .
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 A/C system is opened for more than 24 hours:
Replacing drier insert for A/C system. See REPLACING DESICCANT INSERT FOR A/C SYSTEM or REPLACING DESICCANT INSERT FOR A/C SYSTEM (CONDENSER REMOVED) .
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 A/C system is opened for more than 24 hours:
Replacing drier insert for A/C system. See REPLACING DESICCANT INSERT FOR A/C SYSTEM or REPLACING DESICCANT INSERT FOR A/C SYSTEM (CONDENSER REMOVED) .
Necessary preliminary tasks:
All:
- DRAWING OFF REFRIGERANT FROM A/C SYSTEM is not included in the time value of this operation
- Remove air conditioning compressor drive belt
- Remove left charge air duct
Release screws (1) and (2). Remove refrigerant line. Tightening torque 64 52 1AZ, see 64 52 A/C COMPRESSOR . Installation note: Replace sealing rings. Use special tool 00 9 030 to mount sealing rings without damaging them.
IMPORTANT:
Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.
IMPORTANT:
Secure compressor against falling.
Disconnect plug connection (1). Unfasten screws (2). Release screw (3) and feed out compressor in upward direction. Tightening torque 64 52 3AZ, see 64 52 A/C COMPRESSOR .
Replacement: Read and comply with notes on compressor replacement . If necessary, release screws (1) and modify holder (2).
After installation: Evacuate and fill air conditioning system . Assemble engine.