Air Conditioning Compressor R&R

Tighten air conditioning compressor mounting fasteners in sequence.

Refer to Fig. 1 for A/C compressor service.

1 Recover air conditioning system refrigerant. 2 Remove drive belt. 3 Raise and support vehicle. 4 Disconnect air conditioning compressor connector. 5 Remove air conditioning compressor hose from compressor. 6 Remove air conditioning compressor nut. 7 Remove air conditioning compressor stud. 8 Remove air conditioning compressor bolt. 9 Remove air conditioning compressor assembly. 10 Remove and discard sealing washers and replace with NEW sealing washers. 11 When replacing air conditioning compressor, balance compressor oil. 12 Reverse procedure to install, noting following: a. Torque air conditioning compressor nut to 16 ft. lbs. b. Torque air conditioning compressor stud to 80 inch lbs. c. Torque air conditioning compressor bolt to 16 ft. lbs.

Fig. 1

Firstly, ensure that the vehicle is parked on a flat and stable surface, and engage the parking brake. Turn off the engine and remove the keys from the ignition to ensure safety during the procedure. Locate the air conditioning compressor in the engine compartment. It is typically located at the front of the engine and is connected to the engine's crankshaft via a belt. The compressor is identifiable by its pulley and the refrigerant lines attached to it. Before starting the removal process in your 2018 Chevrolet Captiva, it is essential to disconnect the negative terminal of the battery. This step is crucial to prevent any electrical mishaps or accidents during the removal and installation process. If the refrigerant has not been evacuated from the system, it is necessary to have a certified technician properly recover and recycle the refrigerant following environmental regulations. Never release refrigerant into the atmosphere as it is harmful to the environment. Once the refrigerant has been properly drained, you can proceed with removing the air conditioning compressor. Begin by using an appropriate wrench or socket to release tension on the drive belt connected to the compressor. Carefully slide the belt off the compressor pulley. Next, disconnect any electrical connectors attached to the compressor. This includes the compressor clutch connector and any sensors that may be present. Take note of the connector locations for reinstallation later. Install the new air conditioning compressor by following the reverse procedure of removal. Start by positioning the compressor in its mounting location and securing it with the appropriate bolts. Tighten the bolts to the manufacturer's specifications. Reconnect the refrigerant lines to the compressor, ensuring a proper seal and using new O-rings if necessary. Connect the electrical connectors back to the compressor, including the compressor clutch connector and any sensors. Slide the drive belt back onto the compressor pulley and adjust the tension as per the manufacturer's recommendations. Ensure that the belt is properly aligned on all pulleys. After completing the installation, take the vehicle to a qualified technician to recharge the air conditioning system with the proper amount of refrigerant and lubricant. They will also perform a leak test and verify the system's functionality.

It's important to follow safety protocols throughout the process and consider seeking professional assistance if you're unfamiliar with automotive air conditioning systems or refrigerant handling. Additionally, always refer to Chevrolet Captiva First generation (C100/C140) service manual for specific instructions and precautions.