64 52... Notes/instructions on working on air-conditioning systems
WARNING: This page is about a different car, the 2010 BMW M5, 2009 BMW M5, and 2008 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Avoid contact with refrigerant and refrigerant oil. Follow safety instructions for handling refrigerant R 134a. See 64 50... Safety Instructions For Handling Refrigerant R 134a . Follow safety instructions for handling refrigerant oil. See 64 50... Safety precautions when handling refrigerant oil (for refrigerant R 134a) . Scalding hazard! Work on the cooling system may only be carried out when it has cooled down.
IMPORTANT:
Risk of damage! Restart engine only when A/C system has been correctly filled. Read and comply with notes on replacing compressor. See 64 52... Instructions For Compressor Replacement .
NOTE:
If A/C system is opened for more than 24 hours: Replace desiccant insert for A/C system. See 64 53 517 Replacing Desiccant Insert For A/C System .
IMPORTANT:
N52 engine only: Aluminium-magnesium materials. No steel screws/bolts may be used due to the threat of electrochemical corrosion. A magnesium crankcase requires aluminum screws/bolts exclusively. Aluminum screws/bolts must be replaced each time they are released. The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification. Jointing torque and angle of rotation must be observed without fail (risk of damage).