A/C Compressor - Installation
A/C COMPRESSOR - 5.7L HEV MODEL
CAUTION: If the A/C compressor is being replaced, be certain to adjust the refrigerant system oil level Refrigerant Oil Capacity . 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: Always use ND-11 Polyester (POE) oil from Mopar(R) in Hybrid Electric Vehicle (HEV) models. Never use Polyalkylene Glycol (PAG) oil in an HEV model. See Refrigerant Oil for more information.
CAUTION: Polyalkylene Glycol (PAG) oil can contaminate the refrigerant system of a Hybrid Electric Vehicle (HEV) and lead to A/C system damage and failure. If the refrigerant recovery/recycling and charging equipment was last used on a non-HEV model, flush the hoses of the equipment with a solvent approved by the equipment manufacturer before using the equipment on an HEV model, or use refrigerant recovery/recycling and charging equipment designated only for HEV models by your service facility. See the operating instructions supplied by the equipment manufacturer for proper use and care of the refrigerant recovery/recycling and charging equipment.
CAUTION: The A/C receiver/drier must be replaced if an internal failure of the A/C compressor has occurred Front A/C Receiver Drier - Removal . 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, refer to the Refrigerant Oil Capacities chart to determine how much oil should be removed from the new A/C compressor Refrigerant Oil Capacity .
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.
1. If the A/C compressor (3) 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. 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 systemRefrigerant Oil Capacity. Use only ND-11 POE refrigerant oil from Mopar(R) in an HEV A/C compressor.
2. Position the A/C compressor to the engine and install the three studs (2) and nuts (1). Tighten the studs to 10 Nm (88 in. lbs.) and the nuts to 25 Nm (18 ft. lbs.).
3. Remove the tape or plugs from the opened refrigerant line fittings and compressor ports.
4. Lubricate new O-ring seals with clean refrigerant oil and install them and new gaskets onto the refrigerant line fittings. 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.
5. Connect the A/C suction line (2) and A/C discharge line (4) to the A/C compressor (5).
6. Install the nuts (3) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the nuts to 23 Nm (17 ft. lbs.).
7. Install the bolt that secures the suction line bracket (1) to the front of the engine. Tighten the bolt securely.
8. Connect and lock the orange High Voltage (HV) connector (4) to the A/C compressor (6). Make sure the connector is fully engaged and locked.
9. Connect the black Low Voltage (LV) connector (2) and engage the grey Connector Position Assurance (CPA) latch (1). This locks the LV and HV connectors in place. The electrical connections are correctly assembled when the red tab (3) sticks out from the outboard side of the HV connector.
10. Lower the vehicle.
WARNING: Always follow vehicle service procedures to properly connect batteries on an HEV model. Serious or fatal injury may result from improper service procedures.
11. Reconnect the battery system using the service disconnect at the battery pack . Procedures
12. Evacuate the refrigerant system Refrigerant System Evacuate.
CAUTION: On HEV models, a small quantity of refrigerant oil may have been lost from the A/C compressor when the A/C lines were disconnected. Always replace the lost oil with the same amount of fresh clean ND-11 POE refrigerant oil prior to recharging the A/C system. Never use PAG oil in an HEV model or operate the A/C system with an incorrect amount of oil in the system. Failure to follow this caution may result in serious damage to the HEV A/C system.
13. Adjust the refrigerant oil level Refrigerant Oil Capacity.
14. Charge the refrigerant system Refrigerant System Charge.