3.7L/4.7L Engines
Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system. Refer to OIL, REFRIGERANT, STANDARD PROCEDURE . 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.
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. Refer to OIL, REFRIGERANT, STANDARD PROCEDURE .
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.
4.7L engine shown in illustration. 3.7L engine similar.
- If removed, install the A/C pressure transducer (2) onto the A/C discharge line (4). Refer to TRANSDUCER, A/C PRESSURE, INSTALLATION .
- Remove the tape or plugs from the opened discharge line fitting and the compressor and condenser jumper line ports.
- 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.
- Connect the A/C discharge line to the condenser jumper line tapping block (3) and install the nut (1). Tighten the nut to 23 N.m (17 ft. lbs.).
- Connect the A/C discharge line to the A/C compressor (5) and install the nut (6). Tighten the nut to 23 N.m (17 ft. lbs.).
- Connect the wire harness connector to the A/C pressure transducer.
- Reconnect the negative battery cable.
- Evacuate the refrigerant system. Refer to PLUMBING, STANDARD PROCEDURE .
- Adjust the refrigerant oil level. Refer to OIL, REFRIGERANT, STANDARD PROCEDURE .
- Charge the refrigerant system. Refer to PLUMBING, STANDARD PROCEDURE .