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3.7L/4.7L Engines

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. 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. 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.

NOTE:

When replacing multiple A/C system components, refer to OIL, Refrigerant , Standard Procedure  to determine how much oil should be added to the refrigerant system.

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: A/C Liquid Line & Suction Line To A/C Expansion Valve
GC0089601Courtesy of CHRYSLER LLC
NOTE:

4.7L engine shown in illustration. 3.7L engine similar.

  1. Remove the tape or plugs from the opened refrigerant line fittings and the expansion valve and compressor ports.
  2. Lubricate new O-ring seals with clean refrigerant oil and install them and new gaskets onto the refrigerant 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.
  3. Connect the A/C liquid line (1) and the A/C suction line (5) to the A/C expansion valve (2).
  4. Install the nut (3) that secures the A/C liquid and suction lines to the A/C expansion valve. Tighten the nut to 23 N.m (17 ft. lbs.).
  5. Connect the A/C suction line to the A/C compressor (4).
  6. Install the nut that secures the A/C suction line to the compressor. Tighten the nut to 23 N.m (17 ft. lbs.).
  7. Install the air filter housing cover and resonator inlet tube. Refer to BODY, Air Cleaner , Installation , 3.7L , BODY, Air Cleaner , Installation , 4.7L , BODY, Air Cleaner , Installation , 5.7L , or BODY, Air Cleaner , Installation , 6.7L .
  8. Reconnect the negative battery cable.
  9. Evacuate the refrigerant system. Refer to Plumbing , Standard Procedure .
  10. Adjust the refrigerant oil level. Refer to OIL, Refrigerant , Standard Procedure .
  11. Charge the refrigerant system. Refer to Plumbing , Standard Procedure .
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