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Home >> BMW >> 2017 >> 440i 2D Convertible >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating And Air Conditioning - Repair (F32, F33 & F36) >> 64 52 Compressor >> Replacing air conditioning compressor (B46/B48 4-Cyl. Engine) (4' Series Coupe/Convertible, 4' Series Gran Coupe Sedan)

Replacing air conditioning compressor (B46/B48 4-Cyl. Engine) (4' Series Coupe/Convertible, 4' Series Gran Coupe Sedan)

Special tools required: 

WARNING: Danger of injury! 
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant oil.
Read and comply with the following safety information:
IMPORTANT: Risk of damage! 

Restart engine only when air conditioning has been correctly filled.

Read and comply with NOTES  on replace compressor.

Follow NOTES  for opening and replacing parts in refrigerant circuit.

If air conditioning is opened for more than 24 hours: 

Replace condenser for air conditioning.

Necessary preliminary work: 

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

Release screws (1).

Tightening torque 64 52 3AZ .

Place compressor (2) slightly to one side.

G12847479Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Secure compressor against falling out.

Unlock and disconnect the connector (1).

Release screws (2) and remove refrigerant lines (3).

Tightening torque 64 52 1AZ .

Feed out compressor upwards to the front.

Installation note: 

Replace sealing rings.

Use special tool 00 9 030  to mount sealing rings without damaging them.

G12712116Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

After installation: