BMW 7 Series: Removing And Installing/Replacing A/C System Compressor (N63)
Notes
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 information for HANDLING REFRIGERANT FLUID.
IMPORTANT: Risk of damage! Restart engine only when air conditioning system has been correctly filled.
Read and comply with NOTES on compressor replacement.
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 air conditioning system.
Necessary preliminary work
- DRAIN OFF AIR CONDITIONING SYSTEM
- Remove air conditioning COMPRESSOR DRIVE BELT
- Remove FRONT RIGHT WHEEL ARCH COVER
- Remove STEERING ASSEMBLY COVER
Unfasten screws (2).
Tightening torque 64 53 3AZ.
Remove lines (3) from capacitor (1).
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Fig. 203: Identifying Capacitor, Lines And Screws
Cover cooling fins with aluminium sheet (2) or similar material.
NOTE: This prevents the cooling fins from being damaged when the compressor is removed later.
ARS expandable hose (1) is only tied up in the case of the equipment specification with Dynamic Drive.
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Fig. 204: Identifying ARS Expandable Hose
Release screws (1).
Remove both retaining brackets of anti-roll bar (2).
Carefully lower anti-roll bar.
Tightening torque 31 35 1AZ.
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Fig. 205: Identifying Anti-Roll Bar And Screws
Release screws (1).
Tightening torque 64 52 03AZ.
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Fig. 206: Identifying Compressor Screws
IMPORTANT: Seal openings or lines on compressor with special tool 32 1 270 to prevent escape of media and dirt contamination.
NOTE: Secure compressor (5) against falling.
Release screw (1).
Tightening torque 64 52 03AZ.
Disconnect plug connection (2).
Lower compressor (5).
Release screws (3) and (4) and remove refrigerant lines.
Tightening torque 64 52 01AZ.
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Fig. 207: Identifying Refrigerant Lines, Compressor And Screws
Installation note: Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.
Have another person pull the radiator forward.
Carefully feed out compressor upwards.
After installation
- EVACUATE AND FILL AIR CONDITIONING SYSTEM.
READ NEXT:
Removing And Installing/Replacing Heating And Air Conditioning
System Compressor (N63, With Dynamic Drive)
Notes
WARNING: Danger of injury! Refrigerant circuit is under high
pressure! Follow safety information for handling R134a tetrafluorethane refrigerant.
Avoid contact with refrigerant and refrigerant
Instructions For Desiccant Insert Replacement
A desiccant insert that is in a correctly functioning, sealed A/C system does
not have to be changed at regular
service-inspection intervals.
The desiccant bottle or desiccant insert must be replaced
SEE MORE:
Repairing Airbag Cables
IMPORTANT: Only repair those cables which show visible signs of damage. In
the event of
visible damage, make sure there is only one cable repair in effect after the
repair work. If no visible damage can be identified, the entire cable must be
replaced. When carrying out repairs to the airbag wiring
Removing And Installing/Replacing Right Charge Air Cooler (N63)
WARNING: Risk of scalding! Only perform this repair work after engine
has cooled down!
Necessary preliminary work
Remove ACOUSTIC COVER
Remove front UNDERBODY PROTECTION.
Remove FAN COWL.
Drain coolant for charge air cooler.
Release clamp (1).
Tightening torque 13 71 8AZ.
Release clamp (2).
