Q: How to remove and replace a condenser in an air conditioning system on Mercury Grand Marquis?
A: First of all, releasing connectors on the refrigerant lines requires special tools. Disconnect the battery cable and have the system discharged. To disconnect the hose and fittings use this special tool. Take out all screws and bolts that are holding the condenser. Tilt up the Radiator and lift out the condenser. Transfer brackets to the new condenser and add refrigerant oil. If there is wear or damage, replace it. Reinstall by reversing the removal steps. Use new O-rings and lubricate with refrigerant oil. The system should be evacuated, recharged, and leak tested in that order.