Refrigerant Pressure Sensor / Switch: Service and Repair

64 53 520 Replacing Safety Pressure Switch







WARNING:
Risk of injury.
Refrigerant circuit is under high pressure.
Follow safety instructions for handling R 134a refrigerant.
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant oil.







IMPORTANT:
Risk of damage.
Restart engine only when air conditioning system has been correctly filled.
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:
- Drawing off, evacuating and filling the A/C system are not included in the time value given for this work operation







Release screws (1) and bent heat insulation (2) to one side slightly.







Disconnect plug connection (1) and release safety pressure switch (2).
Tightening torque 64 53 14AZ.







After installation:
- Evacuate and fill air conditioning system

`Q4: