A/C Discharge Line - Installation

3.7L/4.7L ENGINES

CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system [1][2]Capacity Specifications . Failure to properly adjust the refrigerant oil level will prevent the A/C system from operating as designed and can cause serious A/C compressor damage.

NOTE: When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system[1][2]Capacity Specifications .

NOTE: Replacement of the refrigerant line O-ring seals and gaskets is required anytime a refrigerant line is disconnected. Failure to replace the rubber O-ring seals and metal gaskets could result in a refrigerant system leak.






NOTE: 4.7L engine shown. 3.7L engine similar.

1. If removed, install the A/C pressure transducer (2) onto the A/C discharge line (4) A/C Pressure Transducer - Installation.
2. Remove the tape or plugs from the opened discharge line fitting and the compressor and condenser jumper line ports.
3. Lubricate new O-ring seals with clean refrigerant oil and install them and new gaskets onto the discharge line fitting. Use only the specified O-ring seals as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
4. Connect the A/C discharge line to the condenser jumper line tapping block (3) and install the nut (1). Tighten the nut to 23 Nm (17 ft. lbs.).
5. Connect the A/C discharge line to the A/C compressor (5) and install the nut (6). Tighten the nut to 23 Nm (17 ft. lbs.).
6. Connect the wire harness connector to the A/C pressure transducer.
7. Reconnect the negative battery cable.
8. Evacuate the refrigerant system Refrigerant System Evacuate.
9. Adjust the refrigerant oil level [1][2]Capacity Specifications.
10. Charge the refrigerant system Refrigerant System Charge.