Notices for opening and part exchange in refrigerant circuit (M5 2018-2022)
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Required Special Tools:
- 00 9 030
- 32 1 270
WARNING:
- Avoid contact with refrigerant and refrigerant oil
- Observe Safety Instructions for HANDLING REFRIGERANT !
- Observe Safety Instructions for HANDLING REFRIGERANT OIL! !
Attention!
- Always use new O-rings each time A/C connections are opened (refer to applicable BMW parts catalogue)
They must not be coated.
Use special tool 00 9 030 to mount sealing rings without damaging them.
- Open the refrigerant circuit for as short of a period as possible.
- Close all components and lines in the refrigerant circuit and return parts immediately following the removals at openings with special tool 32 1 270 to prevent penetration of moisture or foreign objects.
- If the refrigerant circuit has been sealed at openings with special tool 32 1 270 but remains open for longer than 48 hours, the desiccant insert for the air conditioning system must be replaced.
- Part exchange as preliminary work for further work and part exchange due to creeping leakage
(minor leak, e.g. hairline crack)
Procedure:
- Suction heating and air conditioning system, then determine suctioned coolant oil level
- Carry out part replacement
- Replace removed refrigerant oil and additionally top up with new refrigerant oil according to components replaced:
- Air conditioning compressor: refer to NOTES ON COMPRESSOR EXCHANGE .
- Evaporator: 10 ml
- Capacitor: 20 ml
- Desiccant insert/dryer flask: 20 ml
- Each replaced refrigerant line: 10 ml
- Condenser with integrated dryer flask: 40 ml
- Safety pressure switch and gasket: No additional refrigerant oil
- Only I01: Radiator, high-voltage battery unit: 20 ml
- Evacuate and charge conditioning
- Part replacement due to sudden leakage
(major leak, e.g. line disconnection due to accident)
Procedure:
- Suction heating and air conditioning system, then determine suctioned coolant oil level
- Carry out part replacement
- Replace removed refrigerant oil and additionally top up with new refrigerant oil according to components replaced:
- Air conditioning compressor: refer to NOTES ON COMPRESSOR EXCHANGE .
- Evaporator: 35 ml
- Capacitor: 35 ml
- Desiccant insert/dryer flask: 55 ml
- Each replaced refrigerant line: 35 ml
- Condenser with integrated dryer flask: 55 ml
- Safety pressure switch and gasket: No additional refrigerant oil
- Only I01: Radiator, high-voltage battery unit: 35 ml
- Evacuate and charge conditioning