64 52 ... Instructions for opening and replacing parts in refrigerant circuit
WARNING: This page is about a different car, the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, and 2007 BMW X3. 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 R134a refrigerant, see 64 50 ... Safety instructions for handling refrigerant R134a .
- Follow safety instructions for handling refrigerant oil, see 64 50 ... Instructions for handling refrigerant oil (for refrigerant R 134a) .
CAUTION:
- Always use new O-rings each time A/C connections are opened
- Moisten O-rings with refrigerant oil prior to fitting
- Seal all parts to be returned at openings to prevent ingress of moisture or foreign bodies
- Opening refrigerant circuit without part replacement, as preliminary work to further work
(e.g. engine removal):
Work sequence:
- Draw off A/C system, then determine drawn-off refrigerant oil quantity, see 64 50 009 Drawing off, evacuating and filling A/C system (R 134a) .
- Carry out main work
- Replace removed refrigerant oil with new refrigerant oil
- Evacuate and fill A/C system, see 64 50 009 Drawing off, evacuating and filling A/C system (R 134a) .
- Part replacement and part replacement on account of insidious leak
(minor leak, e.g. hairline crack)
Work sequence:
- Draw off A/C system, then determine drawn-off refrigerant oil quantity, see 64 50 009 Drawing off, evacuating and filling A/C system (R 134a) .
- Carry out part replacement
- Replace removed refrigerant oil with new refrigerant oil
- Additionally
replenish new refrigerant oil in accordance with replaced parts:
- Compressor: refer to 64 52 ... Instructions for compressor replacement .
- Evaporator: 10 ml
- Condenser: 10 ml
- Desiccant insert / desiccant bottle: 30 ml
- Each replaced refrigerant line: 10 ml
- Condenser with integrated dryer: 30 ml
- Safety pressure switch and seals: no additional refrigerant oil
- Evacuate and fill A/C system, see 64 50 009 Drawing off, evacuating and filling A/C system (R 134a) .
- Part replacement on account of sudden leak
(major leak, e.g. pipe break due to accident)
Work sequence:
- Draw off A/C system, then determine drawn-off refrigerant oil quantity, see 64 50 009 Drawing off, evacuating and filling A/C system (R 134a) .
- Carry out part replacement
- Replace removed refrigerant oil with new refrigerant oil
- Additionally
replenish new refrigerant oil in accordance with replaced parts:
- Compressor: refer to 64 52 ... Instructions for compressor replacement .
- Evaporator: 10 ml
- Condenser: 10 ml
- Desiccant insert / desiccant bottle: 30 ml
- Each replaced refrigerant line: 10 ml
- Condenser with integrated dryer: 30 ml
- Safety pressure switch and seals: no additional refrigerant oil
- Evacuate and fill A/C system, see 64 50 009 Drawing off, evacuating and filling A/C system (R 134a) .