Contents: Removal ⬇ Installation ⬇
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!
When replacing air conditioning system components, a certain amount of replacement refrigeration oil will be required to fill the volume of the new unit. Use only oil suitable for use in R-134a systems (read the container label carefully).
The air conditioning compressor is not one of the components subject to repair and, in the event of failure, must be replaced together with the receiver-dryer.
Removal
1. Discharge the air conditioning system in a specialized workshop.
2. Set the parking brake, jack up the front of the vehicle and place it on supports; if equipped, remove the crankcase guard.
3. Disconnect the negative cable from the battery.
4. Remove the accessory drive belt (see Chapter Routine maintenance).
5. Unscrew the mounting bolt and separate the combined adapter from the compressor, remove the sealing element. In order to prevent dirt from getting inside the system, seal the holes in the compressor and adapter with tape.
6. Disconnect the electrical wiring.
7. Loosen the mounting bolts and remove the compressor by lowering it down and releasing it from the support bracket. Remove the compressor from the engine compartment.
Installation
1. Installation is carried out in the reverse order of dismantling the components. Make sure that all fasteners are tightened to the required torque. Adjust the tension of the accessory drive belt (see Chapter Routine maintenance).
(Text copied from an online resource: «opelbook.ru»)
2. Finally, charge the system and check it for leaks in a specialized workshop.
3. When installing a new compressor, check the oil level and make the appropriate adjustments if necessary. The calculation of the volume of refrigerant required to fill the volume of the new compressor is as follows:
- Drain the refrigeration oil from the compressor removed from the vehicle into a measuring container through the suction fitting.
- Subtract the measurement result from the value 160 ml.
- The volume of refrigerant obtained as a result of subtraction should be poured into the new compressor.
4. Starting a new compressor is done as follows:
- Open all air vents on the instrument panel and let the engine idle for five seconds.
- Turn on the heater fan to maximum speed.
- Activate the air conditioning system for at least 2 minutes, with the engine speed below 1500 rpm.
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