A/C Compressor - Installation

INSTALLATION

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 accumulator and the A/C liquid line must be replaced if an internal failure of the A/C compressor has occurred. Failure to replace the A/C accumulator and the A/C liquid line 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 could result in a refrigerant system leak.

NOTE: 5SE12 A/C compressor shown in illustrations.





1. If the A/C compressor (1) is being replaced, some refrigerant oil must first be drained from the new A/C compressor. If equipped with the 5SE12 A/C compressor, drain 70 milliliters (2.4 oz.) of refrigerant oil from the new compressor. If equipped the 6SEU16 A/C compressor, drain 60 milliliters (2 oz.) of refrigerant oil from the new 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 into the engine compartment.
3. Install the three bolts (2) that secure the A/C compressor to the engine. Tighten the bolts to 25 Nm (18 ft. lbs.).





4. Remove the tape or plugs from the compressor ports and the refrigerant line fittings.
5. Lubricate new rubber O-ring seals with clean refrigerant oil and install them and new gaskets onto 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.
6. Connect the A/C discharge line (5) and the A/C suction line (6) to the A/C compressor (3).
7. Install the nuts (4) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the nuts to 20 Nm (15 ft. lbs.).
8. If equipped with the 5SE12 A/C compressor, connect the engine wire harness (1) to the compressor control valve (2).

CAUTION: If equipped with the 6SEU16 A/C compressor, be sure to correctly route the control valve wire lead up to the engine wire harness and install the tie strap. Failure to install the tie strap could result in damage to the wire harness, wire lead and compressor.

9. If equipped with the 6SEU16 A/C compressor, connect the control valve wire lead connector to the engine wire harness and install tie strap that secures the wire lead to the engine harness.
10. Install the accessory drive belt Serpentine Accessory Drive Belt - Installation.
11. Install the splash shield onto the right side frame rail Splash Shield - Installation.
12. Lower the vehicle.
13. Reconnect the negative battery cable.

CAUTION: Do NOT run the engine with a vacuum pump in operation or with a vacuum present within the A/C system. Failure to follow this caution will result in serious A/C compressor damage.

14. Evacuate and charge the refrigerant system Refrigerant System Charge.