Service Port HVAC: Service and Repair

64 53 ... - Replacing valve insert for refrigerant line





Warning!
Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R 134a refrigerant 64 50 ... Instructions For Handling Refrigerant R 134a.
Follow safety instructions for handling refrigerant oil 64 50 ... Instructions For Handling Refrigerant R 134a.
Avoid contact with refrigerant and refrigerant oil.





Important!
Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow 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 64 53 515 Replacing Desiccant Insert For Air Conditioning System





Note:
The special tool is available under BMW order number: 81 34 0 427 679.





Necessary preliminary tasks:
- Drawing off, evacuating and filling the A/C system 64 50 009 Drawing Off, Evacuating and Filling A/C System (R 134a) are not included in the time value given for this work operation





Twist valve insert out of filler neck (2) with remover (1).

Installation Note:
Screw in valve insert hand-tight only.





After installation:
- Evacuate and fill A/C system 64 50 009 Drawing Off, Evacuating and Filling A/C System (R 134a)
- Check leak-tightness of valve insert with soapy solution
In event of leakage:
- Evacuate 64 50 009 Drawing Off, Evacuating and Filling A/C System (R 134a) 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 64 50 ... Leak Testing With Ultraviolet Additives (UV Additives) (BMW Leak-Testing Case)