Q: How to remove and install a Compressor or Refrigerant Line Mounted Switch for Buick Century,Regal?
A: To replace the compressor-mounted switch, disconnect the negative battery cable and discharge the A/C system. Remove the coupled hose at the compressor rear and unplug the electrical connector. Using snap-ring pliers, remove the switch retaining ring. Remove the switch, discard the O-ring. Lubricate a new O-ring with refrigerant oil and insert it into the switch cavity. Lubricate and insert the switch. Secure with the retaining snap-ring. Reconnect the electrical connector and coupled hose with new O-rings. Reconnect the battery, tighten it to 11 ft. lbs., then evacuate, recharge, and test the system. Reset electronic devices like radio and clock. To replace the refrigerant line-mounted switch, disconnect the battery and unplug the electrical connector.
Q: What is the Function of the Switch in an Air Conditioning System for Buick Century,Regal?
A: To remove and install the switch, disconnect the negative battery cable, properly discharge the air conditioning system into a recovery/recycling machine, unplug the electrical connector(s), remove the switch from its mounting position, install the switch, lubricate new O-rings with refrigerant oil, install new O-rings on the coupled hose assembly, engage the electrical connector(s), connect the negative battery cable, tighten the cable bolt to 11 ft. lbs. (15 Nm), evacuate, charge and leak test the system, and reset the radio, clock and any other applicable electronic devices.