2012 Jeep Wrangler JK Factory Service Manual 24 - Heating and Air Conditioning

A/C COMPRESSOR - 2.8L ENGINE

A/C COMPRESSOR - 2.8L ENGINE

CAUTION:

If the A/C compressor is being replaced, be certain to adjust the refrigerant system oil level . 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.

CAUTION:

The A/C receiver/drier must be replaced if an internal failure of the A/C compressor has occurred . Failure to replace the A/C receiver drier can cause serious damage to the replacement A/C compressor.



NOTE:

When replacing multiple A/C system components, see the Refrigerant Oil Capacities chart to determine how much oil should be removed from the new A/C compressor (Refer to 24 - 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 may result in a refrigerant system leak.


  1. If the A/C compressor (7) is being replaced, the refrigerant oil in the old compressor must be first drained and measured. Then the oil in the new A/C compressor must be drained. Finally, the new compressor must be refilled with the same amount of new refrigerant oil that was drained out of the old compressor (Refer to 24 - Heating and Air Conditioning/Plumbing/OIL, Refrigerant - Standard Procedure) . When replacing multiple A/C system components, see the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system (Refer to 24 - Heating and Air Conditioning/Plumbing/OIL, Refrigerant - Standard Procedure) . Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.

    2.  
  2. Position the A/C compressor onto the engine.

    3.  
  3. Loosely install the two bolts (2), stud (4) and nut (3) that secure the A/C compressor to the engine.

    4.  
  4. Tighten each of the fasteners to 28 N·m (21 ft. lbs.) using the following sequence:

    1. The bolt at the front of the compressor.

      2.  
    2. The nut at the front of the compressor.

      3.  
    3. The bolt at the rear of the compressor.

      4.  

    5.  
  5. If equipped, install the transmission cooler line bracket (5) and retaining nut (6). Tighten the nut securely.

    6.  
  6. install the splash shield onto the left front fender (Refer to 23 - Body/Exterior/SHIELD, Splash - Removal) .

    7.  
  7. Connect the engine wire harness connector (5) to the A/C coil connector (6).

    8.  
  8. Remove the plugs or tape from the opened refrigerant line fittings and compressor ports.

    9.  
  9. Lubricate new rubber O-ring seals with clean refrigerant oil and install them and new gaskets onto the discharge and suction 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.

    10.  
  10. Connect the A/C discharge line (1) and A/C suction line (3) to the A/C compressor (4).

    11.  
  11. Install the nuts (2) that secure the A/C discharge and suction lines to the A/C compressor. Tighten the nuts to 23 N·m (17 ft. lbs.).

    12.  
  12. Install the generator (Refer to 08 - Electrical/8F - Engine Systems/Charging/GENERATOR - Installation) .

    13.  
  13. Install the accessory drive belt (Refer to 07 - Cooling/Accessory Drive/BELT, Serpentine - Installation) .

    14.  
  14. Install the charge air cooler outlet hose to the throttle body (Refer to 09 - Engine/Turbocharger System/COOLER and HOSES, Charge Air - Installation) .

    15.  
  15. Reconnect the negative battery cable.

    16.  
  16. Evacuate and charge the refrigerant system (Refer to 24 - Heating and Air Conditioning/Plumbing - Standard Procedure) .

    17.