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 . See 64 50... Instructions For Handling Refrigerant R134a and/or 64 50... Safety Instructions For Handling Refrigerant R134A .
Follow safety instructions for handling refrigerant oil . Refer to 64 50... Instructions For Handling Refrigerant Oil (For Refrigerant R134a) .
Avoid contact with refrigerant and refrigerant oil.
Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow instructions for opening and replacing parts in refrigerant circuit! Refer to 64 52... Instructions For Opening And Replacing Parts In Refrigerant Circuit .
If A/C system is opened for more than 24 hours:Replace desiccant insert for A/C system . Refer to 64 53 515 Replacing Desiccant Insert For A/C System .
Necessary preliminary tasks:
- Drawing off, evacuating and filling the A/C system are not included in the time value given for this work operation. Refer to 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A) .
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 . Refer to 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A) .
- Check leak-tightness of valve insert with soapy solution.
In event of leakage:
- Evacuate A/C system. Refer to 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A) .
- Check sealing faces on line and valve insert for damage, replace line or valve insert if necessary.
- If necessary, carry out leak detection . See 64 50... Leak Testing With Ultraviolet Additives (UV Additives) (BMW Leak-Testing Case) .