64 53... Replacing valve insert for refrigerant line
Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R 134a refrigerant .
Follow safety instructions for handling refrigerant oil .
Avoid contact with refrigerant and refrigerant oil.
Risk of damage!
Restart engine only when air conditioning system has been correctly filled.
Read and comply with notes on replacing compressor .
Follow instructions for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours:
Replacing drier insert for A/C system
Necessary preliminary tasks:
All models:
- Draw off refrigerant from A/C system. See 64 50 009 Drawing Off, Evacuating And Filling A/C System (R 134a) .
Twist valve insert out of filler neck (2) with remover (1).
Installation: Screw in valve insert hand-tight only.
After installation:
Evacuate and fill A/C system
Check leak-tightness of valve insert with soapy solution In event of leakage:
- Evacuate A/C system.
- Check sealing faces on line and valve insert for damage, replace line or valve insert if necessary.
- If necessary, carry out leak detection .