BMW X5: Instructions For Opening And Replacing Parts In Refrigerant Circuit
BMW X5 (G05) 2019-2025 Service & Repair Manual / Heating And Air Conditioning / Air Conditioning Systems / Instructions For Opening And Replacing Parts In Refrigerant Circuit
WARNING:
- Avoid contact with refrigerant and refrigerant oil
- Follow safety instructions for handling R 134a refrigerant.
- Follow safety instructions for handling refrigerant oil.
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.
I. 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.
- Carry out main work.
- Replace removed refrigerant oil with new refrigerant oil.
- Evacuate and fill A/C system.
II. 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.
- 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 NOTES ON REPLACING COMPRESSOR
- 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.
III. 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.
- Carry out part replacement.
- Replace removed refrigerant oil with new refrigerant oil.
- Additionally replenish 25 ml new refrigerant oil and new refrigerant oil
in accordance with
replaced parts:
- Compressor: refer to NOTES ON REPLACING COMPRESSOR
- 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.
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Cleaning Evaporator
Special tools required:
64 1 300
WARNING: When handling cleaning agent, observe following protection
measures:
Wear protective rubber gloves and protective goggles.
If cleaning agent comes into c
Replacing Evaporator
Necessary preliminary tasks:
Remove heater
Release screws (1).
Fig. 84: Identifying Screws
Release screws (1) and remove expansion valve (2).
Installation:
Ensure that seals are correctly seated.
SEE MORE:
Mufflers, Petrol
REPLACING REAR MUFFLER (N52K)
Special tools required:
00 2 210
31 2 220
WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.
Support exhaust system with special tool 31 2 220.
Fig. 8: Identifying Special Tool (31 2 220)
NOTE: If the cutting lines are not id
Smooth Running Measurement
The DISplus/GT-1 are helpful in pinpointing the cause of an engine misfire.
Once the short test is completed,
the fault memory of the ECM can be read out to determine which cylinder or
cylinders have set misfire faults.
There may or may not be any faults present. The engine could be running rough
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