Refrigerant Pressure Sensor / Switch: Service and Repair

64 53 520 Replacing Safety Pressure Switch







WARNING:
Avoid contact with refrigerant and refrigerant fluid.
Follow safety instructions for handling R 134a (tetrafluorethane) refrigerant.
Follow safety instructions for handling refrigerant fluid.







IMPORTANT:
Risk of damage.
Restart engine only when air conditioning system has been correctly filled.

If air conditioning system is opened for more than 24 hours: Replace desiccant insert for A/C system







Necessary preliminary work:
- Drawing off, evacuating and filling the A/C system are not included in the time value given for this work operation







Unfasten plug connection (1) and disconnect.
Unscrew safety pressure switch (2).
Tightening torque 64 53 4AZ.







After installation:
- Evacuate and fill air conditioning system