A/C Compressor - Installation

3.7L ENGINE

CAUTION: If the A/C compressor is being replaced, be certain to adjust the refrigerant system oil level Refrigerant 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 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, see the Refrigerant Oil Capacities chart to determine how much oil should be removed from the new A/C compressor Refrigerant Oil Level .

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 (2) 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, see the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system Refrigerant Oil Level. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
2. Position the A/C compressor to the intake manifold (9) and the engine front cover (7).
3. Install and hand tighten the three compressor retaining bolts (1, 4 and 5).
4. Tighten the bolts in the following sequence:
- the rear bolt (1) to 55 Nm (41 ft. lbs.).
- the front inboard bolt (5) to 40 Nm (30 ft. lbs.).
- the front outboard bolt (4) to 55 Nm (41 ft. lbs.).

5. Tighten the bolt (6) that secures the compressor bracket (8) to the engine front cover to 40 Nm (30 ft. lbs.).
6. Connect the engine wire harness to the A/C clutch field coil connector (3).





7. Remove the tape or plugs from the opened refrigerant line fittings and the compressor ports.
8. Lubricate new O-ring seals with clean refrigerant oil and install them and new gaskets 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.
9. Connect the A/C suction line (1) and the A/C discharge line (3) to the A/C compressor (4).
10. Install the nuts (2) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the nuts to 12 Nm (105 in. lbs.).
11. Install the accessory drive belt Serpentine Accessory Drive Belt - Installation.
12. Install the air cleaner housing.
13. Reconnect the negative battery cable.
14. Evacuate and charge the refrigerant system Refrigerant System Charge.