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3.7L Engine

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system. See Heating and Air Conditioning/Plumbing/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.
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. See Heating and Air Conditioning/Plumbing/OIL, Refrigerant - Standard Procedure .
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.
Fig 1: Suction & Liquid Lines To Expansion Valve
GC0086416Courtesy of CHRYSLER LLC
  1. Remove the tape or plugs from the opened refrigerant line fittings and the compressor and expansion valve ports.
  2. Lubricate new O-ring seals with clean refrigerant oil and install them and a new gasket on the refrigerant line fittings. Use only the specified O-rings 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.
  3. Connect the A/C liquid line (4) to the A/C suction line (1).
  4. Connect the A/C liquid and suction lines to the A/C expansion valve (3) and install the retaining nut (2). Tighten the nut to 23 N.m (17 ft. lbs.).
    Fig 2: Refrigerant Lines To Compressor - 3.7L
    GC0086400Courtesy of CHRYSLER LLC
  5. Connect the A/C suction line (1) to the A/C compressor (4).
  6. Install the nut (2) that secures the A/C suction line to the A/C compressor. Tighten the nut to 12 N.m (105 in. lbs.).
  7. Install the air cleaner housing (refer to AIR INTAKE SYSTEM - INSTALLATION).
  8. Reconnect the negative battery cable.
  9. Evacuate the refrigerant system. See Heating and Air Conditioning/Plumbing - Standard Procedure .
  10. Adjust the refrigerant oil level. See Heating and Air Conditioning/Plumbing/OIL, Refrigerant - Standard Procedure .
  11. Charge the refrigerant system. See Heating and Air Conditioning/Plumbing - Standard Procedure .
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