A/C Compressor

A/C Compressor


Review the applicable warnings and cautions for this system before performing the following operation. Failure to follow the warnings and cautions may result in serious or fatal injury.

• The A/C compressor may be removed and repositioned without discharging the refrigerant system or disconnecting the refrigerant lines.

Removing

- Disconnect and isolate the negative battery cable.

- Recover the refrigerant from the refrigerant system. Refer to => [ Refrigerant System, Recovery ] Refrigerant System, Recovery.

- Remove the nuts (2 and 4) that secure the A/C discharge line (1) and the A/C suction line (5) to the A/C compressor (3).

- Disconnect the A/C discharge and suction lines from the A/C compressor and remove and discard the O-ring seals and gaskets.

- Raise and support the vehicle.

- Remove the splash shield from the right side frame rail..

- Remove the accessory drive belt.

- Disconnect the wire harness connector from the A/C compressor clutch coil.

- Remove the one bolt (2) and two nuts (3) that secure the A/C compressor to the engine.

- Remove the A/C compressor from the engine compartment.

- Install plugs in, or tape over the opened refrigerant line fittings and compressor ports.

Installing


• 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. Refer to => [ A/C Compressor Refrigerant Oil Charge ] A/C Compressor Refrigerant Oil Charge.

• 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.

• 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. Refer to => [ A/C Compressor Refrigerant Oil Charge ] A/C Compressor Refrigerant Oil Charge.

• 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.








- If the A/C compressor (1) 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 system. Refer to => [ A/C Compressor Refrigerant Oil Charge ] A/C Compressor Refrigerant Oil Charge. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle. Refer to => [ A/C Refrigerant Oil ] A/C Refrigerant Oil.

- Position the A/C compressor onto the engine.

- Install and tighten the bolt (2) and nuts (3) in the following sequence:

• Install bolt and hand tighten.

• Install nuts and hand tighten.

• Tighten upper nut to 23 Nm (17 ft lbs).

• Tighten lower nut to 23 Nm (17 ft lbs).

• Tighten rear bolt to 23 Nm (17 ft lbs).

- Connect the wire harness connector to the A/C compressor clutch coil.

- Install the accessory drive belt.

- Install the splash shield onto the right side frame rail..

- Lower the vehicle.






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

- 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.

- Install the A/C discharge line (1) and the A/C suction line (5) onto the A/C compressor (3).

- Install the nuts (2 and 4) that secure the A/C discharge and suction lines to the A/C compressor. Tighten the nuts to 23 Nm (17 ft lbs).

- Connect the negative battery cable.

- Evacuate the refrigerant system. Refer to => [ Refrigerant System, Evacuate ] Refrigerant System, Evacuate.

- Charge the refrigerant system. Refer to => [ Refrigerant System, Charging ] Refrigerant System, Charging.