Warning! The air conditioning system is under constant high pressure. Never disconnect refrigeration lines or remove any system components without first discharging the system. Discharging the air conditioning system must be done by an experienced technician in a car service workshop. Always wear safety glasses when disconnecting refrigeration lines!
Note: The air conditioning compressor is not a component subject to repair and in case of failure must be replaced together with the receiver-dryer.
1. Discharge the air conditioning system in a specialized workshop.
2. Disconnect the negative cable from the battery.
Warning! If the car stereo system is equipped with a security code, make sure you have the correct combination to activate the audio system before disconnecting the battery!
3. Set the parking brake and chock the rear wheels. Jack up the front of the car and place it on supports.
4. Remove the drive belt (see Chapter Routine maintenance).
5. Remove the steering pump (see Chapter Suspension and steering).
6. If equipped, remove the speed control actuator (tempostat).
7. Disconnect the refrigeration lines from the compressor (see accompanying illustration). Immediately seal open ends of tubes and fittings to prevent dirt from entering the system.
8. Disconnect the electrical wiring from the compressor clutch.
9. Unbolt the compressor (see accompanying illustration) from the support bracket and remove it from the vehicle.
10. The clutch must be transferred to the new compressor.
11. The calculation of the volume of refrigerant required to fill the volume of the new compressor is performed as follows:
- a) Drain the refrigeration oil from the compressor removed from the vehicle into a measuring container through the suction connection;
- b) Subtract the measurement result from the value 120 ml;
- c) The volume of refrigerant obtained as a result of subtraction should be poured into the new compressor.
12. Otherwise, installation is carried out in the reverse order of dismantling.
13. Charge the system in a specialized workshop.