Refrigerant Pressure Sensor / Switch: Service and Repair

64 53 520 - Replacing safety pressure switch





Warning!
Avoid contact with refrigerant and refrigerant oil.
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.





Important!
Risk of damage!
Restart engine only when A/C system has been correctly filled.
If A/C system is opened for more than 24 hours:Replacing drier insert for A/C system 64 53 515 Replacing Desiccant Insert For Air Conditioning System





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





Disconnect plug connection (1).
Unscrew safety pressure switch (2).
Tightening torque 64 53 4AZ [1][2]64 53 Capacitor and Dryer With Lines.





After installation:
- Evacuate and fill A/C system 64 50 009 Drawing Off, Evacuating and Filling A/C System (R 134a)